Magnetic chuck for cutting

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1.Magnetic Chucks

・Thickness of workpieces to hold

Magnetic chucks are a jig to secure workpieces by utilizing the power of magnetic force to attract strong magnetic substances suchas iron. While the force to secure workpieces by means of magnetic force is weaker than a mechanical type such as a vise, magnetic
chucks oﬀer advantages to anybody to quickly clamp workpieces without troublesome setting up as long as the attractive face ofworkpieces is comparatively ﬂat. Thanks to this feature, magnetic chucks are widely used in various ﬁelds such as grinding, cutting
and electric discharging.
We would like to present machines on which magnetic chucks are used and introduce main magnetic chucks electromagnetic
chuck , permanent magnetic chuck and permanent electromagnetic chuck used on them.

While the holding power varies according to sizes of workpieces to hold, a factor that is often overlooked is the thickness ofworkpieces. Please see the data of holding power according to the thickness of test pieces of the permanent magnetic chuck and thepermanent magnetic Lifma (Lifting magnet) below.

2.Holding Power■ An example of holding power<<Permanent magnetic chuck>>（1N≒0.1kgf）

Prior to describing machines and magnetic chucks, the holding power will be explained ﬁrst. It is well known that the holding power
varies according to the area of workpieces to hold, but there are other factors that aﬀect the holding power.

− Holding power of permanent
magnetic chuck −−Holding power of permanent
magnetic Lifma (Lifting magnet)−■ Relation between steel plate
thickness and holding power●Relation between thickness of workpiece and holding power(Material SS400, surface roughness ▽▽)※Note that this is not the lifting capacity.

−Factors that affect the holding power−

Test piece 50 × 50 mm, SS400 ground surface

Test piece 50 × 50 mm, SS400 ground surface

（N）
3000

（N）
600

20
VN600

・Surface roughness
The holding power varies according to the surface roughness of attractive faces that come into contact with the magnet. Please see
Relation between material and holding power below.

Light duty
cutting
RMT・RMC

2000
1500

RMWH・RMCW
1000

Heavy duty
RTH
grinding

500

0

10

20

Holding power (kN)

The elements that are attracted by a magnet include iron, cobalt and nickel (called strong magnetic substances). As the holding
power varies according to elements, the holding power on iron also varies according to its kinds (materials). Please see Relation
between material and holding power below.
Please note that if workpieces are of the same size, the holding power may drop to a half if their materials are diﬀerent.

Max. holding power・Material

Max. holding power

RMA
2500

500
400

RMWH・RMCW
RTH

300
200

15

VN300

10

5

VN150

100

30（mm）

VN 75

0Thickness of test piece

1.0

2.0

Thickness of test piece

3.0
（mm）

0

10

20

30

40

50

Plate thickness（mm）■ Relation between material and holding power<<Chucks in general>>●Difference in holding power due tomaterials (%)●Difference in holding power due toattractive surface roughness (%)

00− Lines of magnetic force passing through workpiece thickness (images) −Thin workpiece

Thick workpiece

25

50

75

100
（％）

25

50

SS400

SS400

▽▽▽ G

SUS430

SS400

▽▽

S45C

SS400

▽

S45C hardened

SS400

〜

SKH2
SKH2 hardened

75

100
（％）

｝

Weakened by the amount of penetration oflines of magnetic force through workpiece.

Yellow:Workpiece

MagnetN poleS poleN poleS poleThus, the holding power becomes very weak when the plate thickness is thin.
※This is true with Kanetec products in general.

FC400
FC200

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3.Machines on Which Magnetic Chucks are Used
3.1 Machines and types of chucks by applications

・Milling machine …
Magnetic chucks are used to hold thin plates that are easily deformed when secured with vises.

■ Types of Chucks by Applications
Machining

Application

Heavy duty
cutting・Material roughmachining

MachineApplicable Chuck (Typical Model)

・Machining
center・Material
cutting

Generalcutting

・GeneralfinishingElectromagnetic: KETZ
Permanent electromagnetic:
EP-Q, EP-D
Permanent electromagnetic(round): EPC-Z
Electromagnetic: ACSHIM KEZF
Permanent magnetic: RMA・Milling
machine・Lathe・Turning
machine・Finishing(Straightening)

Light duty
cutting・Material
grinding

Machining load

Heavy duty
grinding

・Generalfinishing

Generalgrinding

Electromagnetic: KETN
Electromagnetic (round):
KEC-AS
Permanent electromagnetic(round): EPC-AST
Permanent magnetic: RMA-C

Electromagnetic: KETW
Permanent electromagnetic:
EPTW
Electromagnetic (round):
KEC-AR
Permanent electromagnetic(round): EPC-AR<Milling machine>・Rotary
grinder
Electromagnetic: KESL

・Surface
grinder

Electromagnetic: KET
Permanent electromagnetic: EPTElectromagnetic: KETL

・Beltgrinder・Finishing(Straightening) ・Cylindrical・PrecisionfinishingElectric
discharge
machining

Nonferrous
machiningWeakmagnetism()

Permanent
magnetic:
RMWH

・Mold
grinder・Moldmachining・Electric
discharge
machine・Grinding/cutting, etc.

・Machines
ingeneralPermanent
magnetic:
Super thin
type RTH

Nonmagnetic
materials:
Vacuumchuck KVR

050

As with the milling machine, magnetic chucks are used for machining thin workpieces. Since there are cases that magnetic chucks
are not usable depending on workpieces and types of machining, manufacturers use either magnetic chucks or vises according toapplications.

Permanent
magnetic(round):
RMC, RMC-X
RMAW-C

Permanent
magnetic(round):RMCW

Permanent magnetic:
Cemented carbide CMR

100

・Machining center …

Permanent
magnetic:
RMT, RMAW

grinder

Precision
grinding<Milling in progress>

Nonmagnetic
materials:
PROMELTASYSTEM PRB
150

200

250

Holding power (□50×t 25, S15C test piece)

300
［kgf］

<Machining center photo 1><Endmill in operation><Machining center photo 2><Milling in progress>

3.2 Main machines on whichmagnetic chucks are used・Surface grinder …
Machine tool on which magnetic chucks are utilized most

<Surface grinder>

3

4

・Lathe …
Magnetic chucks are used to prevent deformation due to clamping when machining thin plates and ring workpieces such as
bearings.

4. Features of Various Magnetic Chucks■ Each magnetic chuck has the following features.
Magnetic Chuck

Permanent
Magnetic Chuck

Electromagnetic Chuck

Permanent
Electromagnetic Chuck

Magnetic source

Permanent magnet

Electromagnet

Permanent magnet

Power source

Not required

Required

Required

Rectiﬁer / Chuck MasterNot required

Required

Required

ON/OFF method

Handle turned manually.
*Operation by electric signals
not possible.

Turned on/oﬀ with rectiﬁer /Chuck Master.
*Operation by electric signals
possible in principle.

Turned on/oﬀ with EP Chuck
Master.
*Operation by electric signals
possible in principle.

Magnetic force adjustment(Note 1)

On certain models, adjustableaccording to handle turn angles.

Adjustable with Chuck Master.

Adjustable with EP Chuck Master.
(Note 2)Item

<Lathe><Bearing being machined>

・Engraving electric discharge machine …
On electric discharge machines, magnetic chucks are used together with oil-type working ﬂuid.
(If they are used with water-soluble working ﬂuid, they will be rusted.)

Temperature rise/accuracychange of magnetic chuckin use(Reference values for bothparameters)

Yes

Yes

Temperature rise: 8℃(5 hours after power on)
Accuracy change: 7 ‒ 12 μm

Temperature rise: 0.8℃
(ON-OFF cycle 5 minutes.)
Accuracy change: 1 μmm max.
(Note 3)

None

Yes

However, since the internal
magnet moves for ON-OFF,many ON-OFF cycles tend tocause failure.

None

ON or OFF roughly once during
a period of shortest 5 min. to 10
minutes.

Holding during power
failure or
wire breakage

Possible

Not Possible

PossibleInterlock (Note4)

Not Possible

Possible

Possible<Permanent magnetic chuck for
cemented carbide><Water-cooled electromagnetic
chuck><Non-contact type
Chuck Master>Normal magnetic chucks hardly
attract carbide or do not attract
carbide at all. This chuck, however,has increased magnetic force toattract carbide.
Two models are available: Onewith ON-OFF function and one
with constant ON (OFF notpossible).
Note, however, that certain
carbide types are not attracted
at all. It is, therefore, necessary
to check if they can be attracted
each time the chuck is used.

The inside of the electromagnetic
chuck is cooled with coolingliquid to minimize temperaturerise and accuracy change. Thismodel requires cooling liquid,cooling liquid supply unit, piping,etc. additionally.

By use of the low magnetic force
control function, this model allows
adjustment of the magnetic force
as with the electromagnetic
chuck. Note, however, that when
the low magnetic force control isactive, the voltage is low, but thec h u c k r emains ener giz e dcontinuously as with the normal
electromagnetic chuck. Therefore,
when it is used for long hours,
accuracy change due to heatgenerated by the permanentelectromagnetic chuck itself tends
to occur, affecting machining
accuracy.

ON-OFF cycle restriction

Magnetic chuck related
products

5

None
Accuracy change: 0 ‒ 2 μm
due to ON/OFF→ Frequent cycles may cause
coil burning in the worst case.

‒ Reference data ‒(Air temperature = cooling liquid
temperature)・Temperature rise: 1℃ max.
・Change due to temperature
rise: 1 ‒ 3 μm max.

6

5. Criteria for Selection of Magnetic Chucks(Bold indicates particularly important criteria)<Precautions>
Note 1: Purpose of magnetic force adjustment
When a workpiece is warped, if it is held by the maximum holding power, its warping is absorbed. The purpose of magnetic
force adjustment is to hold and machine workpieces with minimum magnetic force to allow the workpiece to remain warped
to ensure the ﬂatness of workpieces after machining.

Criteria−Workpiece held by max. magnetic force−
Holding → machining

Prior to holding

Magnetic Chuck

Magnetic force removed

Electromagnetic
chuck

Permanent
Magnetic Chuck

Permanent
Electromagnetic Chuck

・The pitches of magnetic polesor their sizes can be changed.
(Some freedomavailable)

・Even if magnetic chucks are
small, strong holding power isavailable depending on theirmodels.
・No fear of power failure.

・Suitable when heat generation
and accuracy change of themagnetic chuck need to beminimized in order to holdworkpieces for long hours.

・Mountable on machines easily.
(Power source/wiring not
required)・Suitable for holding workpieces
in the case of power failure andwiring breakage.

・Several magnetic chucks may
be used. (ON/OFF of thechucks can be done with one
Chuck Master.)Not ﬂat・Emphasis on adjustment ofmagnetic force.
・Frequent ON-OFF cycle.
(ON and OFF several times per
minute)−Workpiece held after magnetic force adjustment−
Prior to holding

Holding → machining

Magnetic force removed

Flat

Criteria
forselection(Merits)※When machining a workpiece by holding it weakly after magnetic force adjustment, since the workpiece is barely held by a force
at which it may be ﬂung oﬀ or not during machining, skill and experience are required for adjustment. Please keep in mind that thisadjustment cannot be done easily by anyone.

・The pitches of magnetic polesor their sizes can be changed.
(Some freedom available)
・Several magnetic chucks may
be used. (ON/OFF of thechucks can be done with one
Chuck Master.)・ON-OFF operation by signals is
possible. The magnetic force
and demagnetization time canbe adjusted by input signals.

・ON-OFF operation by signals is
possible. The magnetic force
and demagnetization time canbe adjusted by input signals.

*Note, however, adjustment of
the magnetic force ordemagnetization time by input
signals is available only in
special cases.

*Note, however, adjustment of
the magnetic force ordemagnetization time by input
signals is available only in
special cases.

・When the Chuck Master isused, since demagnetization isdone at the time of OFF,workpieces can relatively easily
be removed after OFF.

Note 2: Although the permanent electromagnetic chuck allows magnetic force adjustment, the holing power produced is not exactly
proportional to the voltage as with the electromagnetic chuck. Except for certain models, if the magnetic force has become
too strong, the chuck must be demagnetized once, and then adjusted to a weak force.

・Interlock supported.
・When the Chuck Master is used,since demagnetization is doneat the time of OFF, workpieces
can relatively easily be removed
after OFF.

・Interlock supported.

Permanent electromagnetic chuckholding power graph (Reference)

Electromagnetic chuck holding power graph(Reference)
Holding power relative to voltage ofelectromagnetic chuck- Reference -・Sin c e w h e n ON, p o w e r isconstantly supplied, themagnetic chuck will generateheat (temperature rise),whichcauses its accuracy to change.
・If power fails or wiring is broken,
the chuck can not continue tohold the workpiece.

Holding power (kgf)

Holding power (kgf)

Holding power relative to voltage ofpermanent electromagnetic chuck- Reference -Voltage (V)*Certain models such as EP-Q
excluded.

Criteria
forselection(Demerits)

Voltage (V)The holding power rises abruptly, requiring delicate adjustment.

・No interlock supported.
・H a n d l e o p e r a t i o n m e a n s
troublesome ON⇔OFF operation.
・Except for certain models, themagnetic force is not adjustable.
・Not suitable for application
where ON-OFF cycle is frequent.
(The chuck tends to fail.)
・ON-OFF operation by signals
such as on automatedmachines is not possible.

・When the magnetic force needs
to be changed from strong toweak, it is necessary to dodemagnetization once.
・The voltage and the holingpower are not proportional inmagnetic force adjustment.
・This chuck is not suitable when
the ON-OFF cycle is frequent.

・Since demagnetization is notavailable as with electromagnetic
chucks and certain permanentelectromagnetic chucks, theresidual magnetism is large after
OFF to make it difficult toremove workpieces of hardened
steel in some cases.
・Large sizes are not
manufacturable. When several
units are used, the ONOFF
operation needs to be done
individually for each of them.

Note 3: When the ON-OFF cycle is less than 5 minutes, the temperature rise and accuracy change of the permanentelectromagnetic chuck may be larger than those of the electromagnetic chuck in some cases. Also, the coil may be burnt
depending on the ON-OFF cycle and voltage.

Note 4: If machining is started when the magnetic chuck is not ON (magnetized), the workpiece may be ﬂung away in unexpected
directions to cause accidents. This is the signal which is intended to prevent such hazard and enhance the safety ofworkers and property. The user provides a circuit for interlock of the Chuck Master on the machine that is used to interlock
the magnetic chuck and the machine. Thus, the interlock feature cannot be used unless the machine manufacturer provides
such circuit.

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8

PERMANENT MAGNETIC CHUCKSPERMANENT MAGNETIC CHUCKS

Model RMA SUPER POWERFUL PERMANENT MAGNETIC CHUCK FOR CUTTING

Model RMT POWERFUL RECTANGULAR PERMANENT MAGNETIC CHUCK［Application］［Features］
Powerful permanent magnetic chucks for a wide ●Light weight and thin, yet robust construction. Highly
range of applications from heavy duty grinding toprecise chucks minimizing inﬂuence of handle operation
light duty cutting. Usable in liquid also.
on accuracy.
●Usable for a wide range of workpieces, from thick to thin.

Greatest holding power in
Permanent Magnetic Chuck Series!

Stainless steel type is also available.(Max. size W200 × L400 mm)
［mm
（in）］

RMT-2035

Model

Nominal SizeWork Face

Pole Pitch

Mounting Face₁

RMT-1018 100（3.93）×175（6.89）

Back stopper(1 face)
Side stopper(1 face)■Example of machining
Workpiece
Size (mm)Description of Operation /Machining Conditions

SS□60×t12mm

f23, f28 spot facing, S1200, F70, depth 2.4 - 4.8

SKD11
hardened

φ120×100mm

High-speed MC used. Ball end f6 - f2,
S6000 - 19000, F1000 - 2000

175（6.89）137（5.39）

195（7.67）

7kg/ 15 lb

100（3.93）270（10.6）

9.5kg/ 21 lb

300（11.8）253（9.96）

320（12.6）

11.5kg/ 25 lb

RMT-1325 125（4.92）×250（9.84）125（4.92）250（9.84）210（8.26）

125（4.92）270（10.6）

12kg/ 26 lb

170（6.69）

8.5kg/ 18 lb

RMT-1515 150（5.90）×150（5.90）

150（5.90）108（4.25）

RMT-1530 150（5.90）×300（11.8）300（11.8）253（9.96）
150（5.90）
350（13.7）296（11.6）

RMT-1545
RMT-2035

Single Stopper×m

Single Stopper×n

RMT-2045
Le
L1
L2

Ｐ

Ｈ

［Features］●Super powerful permanent magnetic chucks developed by special design for heavy duty
cutting.
mall●Relatively fine pole pitches make the magnetism work effectively on certain small
workpieces and thin workpieces.
●A drop in magnetic force due to air gaps is little, enabling heavy duty cutting of mill scale
steel.
●The holding power is very strong, yet the operation of the select ratchet handle is lightt andsafe. The handle is detachable for space saving.
●Usable in wet conditions.

RMA-1530A

150（5.90）
×300（11.8）

RMA-1545A
RMA-2050A

₁

₁

₂

450
（17.7）

379（14.9）

446（17.5）

200（7.87）
×500（19.6）

500（19.6）

424（16.6）

496（19.5）

150（5.90）

200（7.87）

RMA-2060A

200（7.87）
×600（23.6）

600（23.6）

RMA-2550A

250（9.84）
×500（19.6）

250（9.84） 500（19.6）

RMA-3060A

300（11.8）
×600（23.6）

300（11.8）

RMA-4060A

400（15.7）
×600（23.6）

400（15.7）

23（0.90）

529（20.8）

596（23.4）

424（16.6） 246（9.68）

496（19.5）

544（21.4）

37kg/ 82 lb

620（24.4）

45kg/ 99 lb

RMT-2525 250（9.84）×250（9.84）

250（9.84）209（8.22）
250（9.84）
RMT-2530 250（9.84）×300（11.8）300（11.8）253（9.96）

270（10.6）250（9.84）
320（12.6）

23kg/ 51 lb

RMT-3050 300（11.8）×500（19.6）

520（20.4）300（11.8）620（24.4）

500（19.6）441（17.3）
300（11.8）
RMT-3060 300（11.8）×600（23.6）
600（23.6）543（21.3）

No. of Stoppers

Handle Hole

2 pcs

mited
Size is li ply
p
u
s
to

67kg/148 lb
81kg/178 lb■Comparison of holding ■Relation between holding
power and thickness
power on weak
Center ‒ thickness
magnetic materials（1 face）(□25: S15C test piece)

Center ‒ holding power

Mass(□50 × t25:SKH2, HRC60 hardened test piece)

24kg/ 53 lb

69（2.71）

8（0.31）

2 pcs

215（8.46）

3 pcs

36kg/ 79 lb

4 pcs

56kg/123 lb

5 pcs

68kg/150 lb

4 pcs

73
（2.87）

265（10.4）

3 pcs

365（14.3）

4 pcs

10（0.39）Side stopper（1 face）

71kg/156 lb
102kg/225 lb

596（23.4）
396（15.5）

28kg/ 62 lb
60（2.36）※ As for the handle, a hex wrench key is included with Models up to RMT-1515, and a dedicated handle is included with Models RMT-1530
and above. ※RMT-3050/3060 require 2 places for ON-OFF operation.

165（6.49）

296（11.6）
600（23.6）Height115（4.52）

196（7.71）

33kg/ 73 lb

600（23.6）543（21.3）

Back stopper

296（11.6）
146（5.74）

30kg/ 66 lb

RMT-2060 200（7.87）×600（23.6）

600

150
（5.90）
×450（17.7）

26kg/ 57 lb

520（20.4）

₂229（9.01）

25kg/ 55 lb

Model RMAW FINE PITCH POWERFUL RECTANGULAR PERMANENT MAGNETIC CHUCK

Mounting Face300
（11.8）

20kg/ 44 lb

500（19.6）441（17.3）

5 pcs
136kg/299 lb※The ratchet handle (with socket) is included.

Model RMA-U TILT TYPE POWERFUL PERMANENT MAGNETIC CHUCK

Most suitable for oblique cutting!

RMAW-1018

Holding power (N)Nominal Size

17kg/ 37 lb

RMT-2050 200（7.87）×500（19.6）

Holding power (N)

Model

ON

m

Socket(Hex.)

［mm
（in）］
Work FaceOFFｈON-OFF handle(Ratchet)

320（12.6）
150（5.90）
370（14.5）50
14.5150（5.90）×450（17.7）
450（17.7）354（13.9）
470（18.5）
15 （1.96）Hex. 8（1.5＋3.2＋200（7.87）×350（13.7）
350（13.7）296（11.6）
370（14.5）（0.59）（0.31）
1.5＋8.3）200（7.87）×400（15.7）
400（15.7）354（13.9） （0.57）
420（16.5）
200（7.87）
×450（17.7） 200（7.87）450（17.7）398（15.6）
200（7.87）470（18.5）

RMT-1535 150（5.90）×350（13.7）

RMT-2040

RMA-1530A

Mass

₂

RMT-1025 100（3.93）×250（9.84） 100（3.93）250（9.84）210（8.26）
RMT-1030 100（3.93）×300（11.8）

B

Workpiece
Material

HandleHeightHole■ RMAW-1018■ RMWH-X1018■ RMT-1018

950
900
850
800
750
700
650
600
550

-RMAW-1018-RMWH-X1018-RMT-1018

500
400
300
200
100

1
2
Thickness (mm)0［Application］
Dimensions
Model
Suitable for grinding small and thin workpieces.
₁［Features］
RMAW-1018
105（4.13） 175（6.88） 134（5.27）●Holds small and thin (thinner than 3 mm) workpieces eﬀectively.
RMAW-1325
125（4.92） 250（9.84） 206（8.11） 50（1.96）●Holding performance greater than conventional models on
RMAW-1530
150（5.90） 300（11.8） 254（9.99）
hardened parts around molds.
●Gap performance improved over conventional models.
※As for the handle, a hex wrench key is included.

［mm
（in）］
Mass
₂

191（7.51）
266（10.4）

7kg/15.4 lb
10（0.39）

316（12.4）

12kg/26.4lb
18kg/39.6lb

8−φ17

B1

190
150

Model RMA-C POWERFUL ROUND PERMANENT MAGNETIC CHUCKGreatest holding power in Round Type Permanent Magnetic Chuck Series!

20

Le（P=4+11）
L1

120

H2

120

L2

［mm
（in）］

9

Model

Nominal Size

RMA-1530U

150（5.90）
×300（11.8）

Work Face₁

RMA-1545U

150（5.90）
×450（17.7）

RMA-2050U

200（7.87）
×500（19.6）

RMA-2060U

200（7.87）
×600（23.6）

150（5.90）
200（7.87）

₁

₁

300（11.8）229（9.01）
450（17.7）379（14.9）
500（19.6）424（16.6）
600（23.6）529（20.8）

LengthHeight₂

₂

552（21.7）
112（4.40）

702（27.6）
752（29.6）
852（33.5）

HandleHole

Hex. 8（0.31）
177（6.96）
Hex.10（0.39）

71

Mass
66kg/ 145 lb
79kg/ 174 lb
108kg/ 238 lb
125kg/ 275 lb※The ratchet handle (with socket) is included.
※The scaled ring can be used to set an angle roughly. When it is necessary to set the angle accurately, use a sine bar or othersuitable device. Note that when it is tilted forward, the ON-OFF operation will become diﬃcult.

4−d

23

φD1
Le（P＝4＋11）［Application］
Suitable for heavy duty grinding of inclined
surfaces and light duty cutting.
［Features］●A drop in magnetic force due to air gaps is
minimal to make this type suitable for cutting ofmill scale steel.
●The tilting angle can be set as desired in arange of 90°forward and 90°backward.

4

Handle hole (Hex., width across flats 10)

φD2
Dp

20

An example of machining

120

RMA-1545U

H1

163

RMA-C20■Relation between
handle turning angle
and holding power［Application］
Strong holding power for various cutting applications.
［Features］●The magnetic force adjust feature ensureseﬃcient positioning of workpieces for machining
by a lathe.
●An easy-to-operate ratchet handle is employed
for ON-OFF operation.
●Holding power 1.5 times greater than that ofconventional models.

(in the center of the attractive face)
Holding power（％）
100

50
0

Work Face060 120 180 240 300 360 420 480
OFF← Handle turning angle →ON
［mm
（in）］

Mounting Face

Model

Nominal Size

RMA-C16160（6.29）

160（6.29） 109（4.29） 125（4.92） 140（5.51）

RMA-C20200（7.87）

200（7.87） 139（5.47） 160（6.29） 180（7.08）

RMA-C25250（9.84）

250（9.84） 184（7.24） 200（7.87） 224（8.81）

27kg/ 59.5 lb

RMA-C32315（12.4）

315（12.4） 244（9.60） 250（9.84） 280（11.0）

M10（0.39） 43kg/ 94.8 lb

RMA-C40400（15.7）

400（15.7） 319（12.5） 315（12.4） 355（13.9）

69kg/ 152 lb

₁

Mass

₂

M8
（0.31）

11kg/ 24.2 lb
17kg/ 37.4 lb※The ratchet handle (with socket) is included.

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PERMANENT MAGNETIC CHUCKS

Electromagnetic chuck for removing distortion ACSHIM* Series

Model RMC POWERFUL ROUND PERMANENT MAGNETIC CHUCKThis is an epoch-making chuck that supports a distorted/
warped workpiece with sticks to hold it in its natural state.

［Application］
Permanent magnetic chucks using a high-performancemagnet for grinding operations on rotary grinders,cylindrical grinders, internal grinders and cutting operations
on lathes.
［Features］●The B type can be used in such a way that it ﬁrst holds
a workpiece by a weak magnetic force and after ﬁnely
adjusting its holding position, it is changed to a strong
magnetic force to secure the workpiece ﬁrmly.
●Can be used for both grinding and cutting operations.
●Work well on thin workpieces to thick workpieces.
●Highly precise chucks with little accuracy change.

“B” is magnetic force adjust type.

RMC-32［Application］
The sticks arranged at certain pitches enable precise setting of workpieces quickly in the machining sector including mold bases in dry milling operations.

- Common speciﬁcations of ACSHIM for cutting ●Sticks on the work face support a distorted (warped) workpiece and maintenance.
hold it in a natural state. Since no measures are necessary to support ●The precision ﬂatness machining time can be reduced by 50%.
such workpieces using shims, etc., the work eﬃciency can be improved. ●The turn-over process in machining is reduced from 3 ‒ 4 steps to 2 steps.
●A series of operation from supporting a workpiece (raising the sticks) up ●The use of sticks requires no skills to machine workpieces precisely.
to holding and securing the workpiece can be done quickly.
●Workpieces of 3 mm distortion max. can be supported.
●Each stick unit (workpiece support) can be removed easily for easy ●Most suitable for milling plates that are 20 mm or thicker.

Model KEZF-WS ACSHIM* FOR PRECISION CUTTING
Chuck controller
required additionally

Accuracy improvement
by ACSHIM (Flatness)

Environmentallyfriendly（mm）
1.0<An example of machining on lathe>

Workpiece size 300 × 700 mm (Material SS400)
32t
22t

0.8

［mm
（in）］
H

RMC-16160
160
118（6.29）（6.29）（4.64）

125（4.92）

0.2

140
7.5kg/（5.51） M 8
16 lb
15.2
200
200
149
160
180 （0.31）
12kg/
Hexagon 26 lb（7.87）（7.87）（5.86）（1.5+3.2+1.5+9）（6.29） 4 （7.08）
24
55
8
0.59
（0.94） （2.16）250
250
194 （0.05＋0.12＋200 （0.15） 224（0.31） 18kg/（9.84）（9.84）（7.63） 0.05＋0.35） （7.87）（8.81）
40 lb

RMC-32315
315
255（12.4）（12.4）（10.0）

250（9.84）

280
M10（11.0）（0.39）

29kg/
64 lb

RMC-40400
400
331（15.7）（15.7）（13.0）

315（12.4）

355（13.9）

47kg/
104 lb

KEZF-WS4080
D1
Le

1

RMC-250.4

E4.5kg/
10 lb

K

K

P

RMC-20M 6
112（0.23）（4.40）

Singlestopper

0.0

Hydraulic hosePower Cord

3mm

（Fig-2）（Fig-1）Stick

A gap in the center of a warped workpiece thatcannot be reached by shims is supported by sticks.

125（4.92）

RMC-20B2

RMC-25B

140
9kg/（5.51） M 8
20 lb
□ 8
15.2
（0.31）（0.31）
200
200
149
160
180
15kg/
（7.87）（7.87）（5.86）（1.5+3.2+1.5+9）（6.29） 4 （7.08）
33 lb
24
65
0.59
（0.94） （2.55）
250
250
194 （0.05＋0.12＋200 （0.15） 224
23kg/（9.84）（9.84）（7.63） 0.05＋0.35） （7.87）（8.81）
51 lb

RMC-32B

315
315
255
（12.4）（12.4）（10.0）

250（9.84）

280
M10（11.0）（0.39）

RMC-40B

400
400
331
（15.7）（15.7）（13.0）

315（12.4）

355（13.9）

0° 30° 60° 90° 120°

Nominal Size

KEZF-WS50100 500（19.6）
×1000（39.4） 500（19.6）KEZF-WS60100 600（23.6）
×1000（39.4） 600（23.6）
L1［mm（in）］ Separator

Standard

Work Face

Mag. force
adjust₁

₂

Mounting FaceNo. ofpoles

150（5.90） 30
200 （1.18）
RMC-X20 RMC-X20B（7.87）

10300
RMC-X30 RMC-X30B（11.8） 40
6（0.23）
400 （1.57）
RMC-X40 RMC-X40B（15.7）

12

RMC-X15RMC-X50
RMC-X60̶̶̶

500 130（19.6）（5.11）
600 180（23.6）（7.08）

24※A ratchet type handle (with socket) is included.

11

₃

110
（4.33）
160（6.29）

Standard

130ー（5.11） M874
8（0.31）
180 （0.31）（2.91）
84（7.08）（3.30）

450（17.7）

450（17.7） M12117
520 （0.47）（4.60）（20.4）

ーー

Approx.
9 kg/19.8 lb

No. of poles n（brass）

Mass

Mag.force
Mag.force
Standard
Standard
adjustadjust230
260（9.05） 4 （10.2） M108994315 （0.15） 355 （0.39）（3.50） （3.70）（12.4）（13.9）
400（15.7）

Handle HoleWith
T-slotSinglestopper

4− d

K

ー

Approx.
Approx.
16kg/35.2 lb 18kg/39.6 lb
8（0.31）
Approx.
Approx.
42kg/92.6 lb 43kg/94.7 lb

1000（39.4）

Protective
P
Power
c
cover
Cord

Drive shaft

610（24.0）

105（1.18）（4.13）
1020（40.1）

24

230kg/507 lb EH-VFW205A

40

360kg/793 lb

48

430kg/948 lb EH-VFW210A

Chuck controlle
controller
required additiona
additionallyWith
T-slotHyddraulic
hosse

Air tube

Power
cord

Protective
cover

EPZF-WX4080(An example of special fabrication)

EnvironmentallyfriendlyEnvironmentallyfriendlyWork supportpNppiecesWork support
N piecesp

Chuck controller
required additionallyNominalSize

Work Face300（11.8）
× 300

Power
saving［mm（in）］Mounting Face Height Number
Dedicated
Voltage Current Mass ControlofSticksUnit₁
₁

600 310620

400（15.7）
× 400 800 410 820
KEZF-WX 4080 800（31.4）（15.7）（31.4）（16.1）（32.2） 30
115（1.18）（4.52）
510
500（19.6）
× 500
KEZF-WX50100 1000（39.3）（19.6）1000（20.0）1020
600（23.6）× 600 （39.3） 610 （40.1）
KEZF-WX60100 1000（39.3）（23.6）（24.0）

140kg/
308 lb

15

2.0A

24

250kg/
2.3A
551 lb EH-VFW205A

40
48

90
VDC

4.0A

390kg/
859 lb

470kg/
EH-VFW210A
6.0A
1036 lb

Minimalheat
generation

［mm
（in）］
Model

NominalSize

Work Face

Mounting Face
₁

Height Number
Dedicated
Voltage Massof Sticks
Control Unit

500（19.6）× 500
5001000（39.3）（19.6） 1000 （19.6） 1020 30
150（1.18）（5.90）
600（23.6）× 600 （39.3） 600 （40.1）
EPZF-WX60100
1000（39.3）（23.6）（23.6）EPZF-WX50100

40
48

180
VDC

520kg/
1146 lb
EPS-WF275A
620kg/
1367 lb※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a
KANETEC chuck controller is used.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes.
If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.

- Speciﬁcations of ACSHIM with T-slot -E

510（20.0）

Mass
130kg/286 lb

Air tube※The control unit and clamp parts are not included. The KANETEC chucks work best when a
KANETEC control unit is used.

10
Approx.
Approx.
（0.39） 83kg/182 lb 90kg/198 lb
10（0.39）
Approx.
ー
160kg/352 lb
ーApprox.
ー
230kg/507 lb

15

Permanent
electromagnetic

Singlestopperpp

KEZF-WX 3060 600（23.6）（11.8）（23.6）（12.2）（24.4）

Mag.forceadjustHydraulicyhose

KEZF-WX4080

Model

H

P.C.D.DP

Model

HeightP

₁

Dedicated
Control Unit

Model EPZF-WX
Electromagnetic

φD 3

Width of ring t[mm]Height Number ofSticks※The control unit and clamp parts are not included. The KANETEC chucks work best when a KANETEC chuck control unit is used.

ON

φD 2

RMC-X40

φD 1

Workpiece size:
φ120×H50(SS400)
Holding power[N]₁

Model KEZF-WX［Application］
Permanent magnetic chucks for securing ring-shaped
workpieces on lathes and vertical combined grinding machines.
［Features］●The star-pole construction generates a strong magnetic force
that works well on ring-shaped workpieces such as bearings.
●The permanent magnetic chucks that do not require
electricity can be mounted easily without troublesome wiring.
They also contribute to energy saving.
●Usable in wet conditions.
●Model RMC-X-B chucks are equipped with a magnetic force
adjust function.(The ON-OFF operating angle is about 630
degrees and the magnetic force is adjusted according to thehandle turning angles.)

［mm
（in）］

Mounting Face

KEZF-WS 3060 300（11.8）
× 600（23.6） 300（11.8） 600（23.6） 310（12.2） 620（24.4）

Model RMC-X STAR-POLE ROUND PERMANENT MAGNETIC CHUCK

Comparison of ring-shaped
workpiece holding power

Work Face

KEZF-WS 4080 400（15.7）
× 800（31.5） 400（15.7） 800（31.5） 410（16.1） 820（32.2） 30

0％360° 460°

180°
270°
Handle Turn Angle

OFF※The magnetic force is turned on and oﬀ with the T-shape handle (accessory)for the scroll chuck.

Model

L

50％

35kg/
77lb
□10
（0.39） 62kg/
137 lbWork support N pieces

H

160
160
118
（6.29）（6.29）（4.64）

100％

Model RMC - B
Adjustment of magnetic force（At the center）t

RMC-16B

6kg/
13 lb

112
M 6
（4.40）（0.23）

Holding Power

RMC-13B100（3.93）

After machining
Workpiece※As for handle, hexagonal wrench key is provided for model RMC-13 thru RMC-20, and special handle is supplied for model RMC-25 and above.
88
125
125
（3.46）（4.92）（4.92）

Material

Note: Not guaranteed values.

B1
B

100
（3.93）

4-d

P

88
125
125
（3.46）（4.92）（4.92）

t

4-d

D2
Dp

RMC-13

0.6

H

t

D2
Dp

Bottom Plate

12t

E

Pole Pitch

D1
Le

Top PlateModel Fig.

Face Plate
HandleHeightThickness
Hole
Mass

Patended・Design registered●Compared with Model KEZF-WS, this model oﬀers more freedom of increasing/decreasing the ●Electricity is supplied momentarily only when mounting andnumber of sticks.
demounting workpieces, thus minimal heat is generated and●A new structure to prevent occurrence of stick operational failure due to chips employed.
highly precise machining can be expected. Also electricity is
saved. In addition, this ACSHIM can be used not only for plate●The elimination of the lid of the stick section has enhanced maintainability as there is no need tomachining, but also for various machining operations that requirealign the level of the body and the lid when replacing the stick unit.
workpieces to be held for a long time.(Model EPZF-WX)●The utilization of newly installed T slots enables it to clamp nonferrous or irregular shaped workpieces.

12

ELECTROMAGNETIC CHUCKS

ELECTROMAGNETIC CHUCKS

Model KETN POWERFUL WAVEFORM ELECTROMAGNETIC CHUCK
Back
stopperSide
stopper

An example of mounting on machinePower cord 3‒5m

■STAR-Pole Type

［Application］
Suitable for grinding and cutting operations with the chuck mounted on such machine
tools as rotary grinders, lathes, turning machines and rotary milling machines thatrotate workpieces to machine. This model comes in two types; ring pole and star poleaccording to the patterns on the chuck work face. The ring pole type is used forgeneral grinding operations and the star pole type for cutting operations also.
［Features］●For such operations as cutting thick workpieces, the star pole type is recommended
that generates strong holding power.

Be

B1

B2

G

Environmentallyfriendly

Model KEC-AS ROUND ELECTROMAGNETIC CHUCK

Environmentallyfriendly
P2 L e

P1

L1

t

L2

h

H

KETN-4080A

Chuck controller required additionally
Test piece thickness 25 mm, SS400 ground surface

Test piece 50 × 50 mm, SS400 ground surface
（N）
3500
3000

125

Holding power

75
50

d!

Distor te

KETN

2500
2000

De

1500
1000

KETN
25

KEC-32ASE

500

0

200

600（cm2）

400

0

Attractive area of test piece

10

20

Chuck controller required additionally30（mm）

₁

₁

150（5.90）
× 300（11.8）

KETN- 1545A

150（5.90）
× 450（17.7）

KETN- 2050A

200（7.87）
× 500（19.6）

KETN- 2060A

200（7.87）
× 600（23.6）

KETN- 2550A

250（9.84）
× 500（19.6） 250（9.84） 500（19.6）

KETN- 3060A

300（11.8）
× 600（23.6）

KETN- 3080A

300（11.8）
× 800（31.5） 300（31.5）（11.8） 800

200（7.87）

500（19.6）

152（5.98）

600（23.6）

1

440（17.3） 22 （0.86）
523（20.5） 22.5
（0.88）

208（8.18） 440（17.3） 22 （0.86）

Height Mounting
Hole
VoltageMounting Face
₂

2

KETN-30100A

300（11.8）
×1000（39.4）

25
1000（39.4）（0.98）

KETN- 4080A

400（15.7）
× 800（31.5）

800（31.5）

146（5.74）
196（7.71）

344（13.5）

18100
494（19.4） （0.70）（3.93）

14544（21.4）
600（23.6）

Clamping

246（9.68） 544（21.4）

14

KETN-40100A

400（15.7）
×1000（39.4）

600（23.6）
16
246（9.68） 722（28.4） 26 （1.02） （0.62） 294（11.5） 800（31.5）

342（13.4）

919（36.1） 26.5
（1.04）

20
120
1000（39.4）（0.78）（4.72）

722（28.4） 25 （0.98）

800（31.5）

919（36.1） 26.5
（1.04）

Current

ElectroChuck Master

Mass

₂

523
（20.5） 22.5
（0.88）

600（23.6）

400（15.7）e248（9.76） 28 （1.10）
300（11.8） 20
112（4.40）
450（17.7） （0.78）
404（15.9） 26 （1.02）

KETN- 1530A

150（5.90）

Pole Pitche390（15.3）

90 VDC

Clamping

0.49A

27kg/

59lb

0.87A

41kg/

90lb

1.09A

80kg/ 176lb

1.18A

98kg/ 216lb

1.42A

102kg/ 224lb

1.59A

130kg/ 286lb

2.21A

173kg/ 381lb

3.35A

240kg/ 529lb

3.05A

230kg/ 507lb

4.17A

288kg/ 634lb

KETN-50100A

500（19.6）
×1000（39.4） 500（19.6） 1000
（39.4）

432（17.0） 920（36.2） 23 （0.90）

490（19.2） 1000
（39.4）

5.86A

400kg/ 881lb

KETN-60100A

600（23.6）
×1000（39.4） 600（23.6）

522（25.5） 924（36.3） 31 （1.22）

590（23.2）

5.66A

470kg/1036lb

Feeder required additionally (See below)
K

Work Face

Nominal Size

D1

Thickness of test piece

［mm
（in）］
Model

Mechanicalclamping

H

100

Use magnet holding※ES-M103B
ES-M305B
EH-V305A
EH-VE305A

D2
n-M

Holding power per unit area

（N/cm2）150

de［Application］
A chuck for cutting by a milling machine, planomiller, etc. The wavy pattern of theseparator helps distribute the magnetic force uniformly over the whole attractive surface
and increases the overall magnetic force. Thus, this is a general-purpose chuck for awide range of cutting applications.
［Features］●Electromagnetic chucks generating strong holding power specially for cutting operations.
●Specially designed to minimize inﬂuence of magnetism on cutters.
●For heavy duty cutting, Model KETZ, super powerful electromagnetic chuck, isavailable, but this model has a wider application range that includes workpieces
thinner than 15 mm, for which Model KETZ is not suitable.

Dp〈Lathe wiring diagram〉
Slip ring

Above models
except forthe onemarked by ※.

Round chuck
Workpiece

ElectroChuck Master

EH-VE210D※The power cord is 3 m for KETN-1530A and 1545A and 5 m for other models. ※If the magnetic force needs not be adjusted, use ES-M.
※The chuck controller and clamp parts are not included. The KANETEC chucks work best when a KANETEC chuck controller is used.

BrushholderModel KETZ SUPER POWERFUL ELECTROMAGNETIC CHUCK
Test piece thickness 25 mm, SS400 ground surface

100
75
KETZ

50

1500

25

e

₁

₂

KETZ- 1530B 150（5.90）（8.97） ̶̶
× 300（11.8） 150 300（11.8） 240（9.44） 90 228（5.90） 450（3.54） 378
KETZ- 1545B 150（5.90）
× 450（17.7）（17.7） 390（15.3）（14.8） ̶̶

No.of
Poles
1

₂

200

600（cm2）

400

Voltage Current

62（2.44）54（2.12） 4
520（20.4）
500（19.6） 422（16.6）
200
160
206
KETZ- 2060B 200（7.87）
× 600（23.6）
600（23.6） 520（20.4）
60（2.36）52（2.04） 5
620（24.4）（7.87）（6.29）（8.10）
KETZ- 2080B 200（7.87）
× 800（31.5）
800（31.5） 718（28.2）
58（2.28）50（1.96） 7
820（32.2）

KETZ- 2050B 200（7.87）
× 500（19.6）

14100（3.93）

KETZ- 2550B 250（9.84）（2.44）54（2.12） 4
520（20.4）
× 500（19.6） 250 500（19.6） 422（16.6） 200 62
256（9.84） 600（7.87）（10.0）
KETZ- 2560B 250（9.84）
× 600（23.6）（23.6） 520（20.4）
60（2.36）52（2.04） 5
620（24.4）
90
KETZ- 3060B 300（11.8）
× 600（23.6） 300 600（23.6） 520（20.4） 240
306
20
Clamping VDC（9.44） 67（12.0） 920
KETZ- 3090B 300（11.8）
× 900（35.4）（11.8） 900（35.4） 817（32.1）（2.63）56（2.20）（36.2）（0.78）(No hole)
7
KETZ- 4080B 400（15.7）
820（32.2）（2.28）50（1.96）
× 800（31.5） 400 800（31.5） 718（28.2） 340 58
110
410（4.33）（16.1）（13.3）
KETZ-40100B 400（15.7）
×1000（39.4）（15.7）1000（39.4）
917（36.1）
55（2.16） 8
1020（40.1）
KETZ-50100B 500（19.6）
×1000（39.4） 500 1000
（39.4）
430
510（16.9） 65（2.55）52
×1500（59.0）（19.6）750（29.5）
×2 1417（55.7）（2.04） 6×2 （20.0） 1520
（59.8）◎KETZ-50150C 500（19.6）
KETZ-60100B 600（23.6）
×1000（39.4） 600 1000
（39.4） 917（36.1） 530（23.6）750（20.8）
×1500（59.0）（29.5）
×2 1412（55.5）◎KETZ-60150C 600（23.6）（40.1）
610 102052（2.04） 6×2 （24.0） 1520
（59.8）
55（2.16）

8

Mass

₂

350
（13.7） 1890
156（0.70）（3.54）（6.14） 500（19.6）

100（3.93） 100（3.93） 75（2.95）

0

0.45A

28kg/

61lb

0.66A

42kg/

92lb

68kg/ 149lb ※ES-M103B
ES-M305B
79kg/ 174lb
EH-V305A
1.42A 115kg/ 253lb

Voltage Current

ElectroChuck Master

Mass

₂

63
（2.48）

M 6（0.23） 80（3.15）

0.04A

4.2kg/ 9 lb

125（4.92）

140（5.51） 85（3.34）
M 8（0.31）
178（7.00）

0.08A

12kg/26 lb

0.13A

19kg/41 lb

224（8.81）

0.40A

33kg/72 lb（11.0）
M10（0.39）280

0.44A

52kg/114 lb（3.54）
355（13.9） 90

0.68A

93kg/205 lb

KEC- 16ASE

160（6.29） 160（6.29） 135（5.31）

KEC- 20ASE

200（７.87）200（７.87） 161（6.33） 40（1.57）

160（6.29）

KEC- 25ASE

250（9.84） 250（9.84） 223（8.77）

200（7.87）

8
10

20

30（mm）

Thickness of test piece4（0.15）KEC- 32ASE

315（12.4） 315（12.4） 271（10.6）

KEC- 40ASE

400（15.7） 400（15.7） 367（14.4） 49（1.92）

250（9.84）
4（0.15）315（12.4）−

90 VDC※ES-M103B
ES-M305B
EH-V305A
EH-VE305A

10

KEC- 50ASE

500（19.6） 500（19.6） 463（18.2）

400（15.7）

450（17.7）

1.00A

145kg/319 lb

KEC- 63ASE

630（24.8） 630（24.8） 583（22.9）500（19.6）（22.0）
M12（0.47）560

1.28A

190kg/418 lb

KEC- 80ASE

800（31.5） 800（31.5） 748（29.4）

710（27.9）110（4.33）
M16（0.62）900（35.4）

1.88A

370kg/815 lb

3.92A

580kg/1278 lb

630（24.8）70（2.75）Side
stopper

Power cord
3‒5m

Back
stopper

KEC-100ASE 1000（39.4）1000（39.4）944（37.1）

128（0.31）
800（31.5）

Above models except forthe one marked by ※.

※If the magnetic force needs not be adjusted, use ES-M.
※The chuck controller and clamp parts are not included. The KANETEC chucks work best when a KANETEC chuck controller is used.

0.90A
0.95A
1.16A

Height29（1.14）

ElectroChuck Master

94kg/ 207lb EH-VE305A■Feeder (optional)

1.26A 118kg/ 260lb
P1 P2

1.64A 143kg/ 315lb

Le

3.04A 203kg/ 447lb

Above models
3.23A 240kg/ 529lb except for
3.69A 300kg/ 661lb the one
marked by ※.
3.95A 375kg/ 826lb
2.69A×2 552kg/1217lb
5.30A 414kg/ 912lb EH-VE210D
3.51A×2 650kg/1433lb※The power cord is 3 m for KETZ-1530B and 1545B and 5 m for others. ※If the magnetic force needs not be adjusted, use ES-M. ※Sizes not listed above are also available.
※The chuck controller and clamp parts are not included. The KANETEC chucks work best when a KANETEC chuck controller is used. ※The models marked by ◎ are of
duplex type. Please provide information such as a center connecting hole position. Also the terminal box TB-2PD is required for connection to the Chuck Master.

13

₁

Mounting Face

L1
L2

This feeder is required to use the round typeelectromagnetic chucks. Since the chuck itself is
rotated, the feeder cables cannot be connected
directly. For this reason, electricity is fed via a slip
contact between the carbon brush on the powersource side and the slip ring attached to the chuck.
●The φ24 mounting hole of the slip ring (SR-1)
can be expanded up to φ40.

Slip ring Model SR-1

6-φ9 through hole
Pitch circle dia. 55

Brush holder Model BH-1A

20
φ8

40

R8

2-M4（R32）

90゜

5 10 5
10 10

50

e

Pole No. of
Pitch PolesG

₁Work Face

B2
B1
Be

₁

NominalSize

500

Attractive area of test piece

Height Mounting
Hole

KEC- 10ASE

1000

H

Nominal Size

Mounting Face

Model

2000

h

Model

Pole Pitch

［mm
（in）］

2500

［Application］
Designed for heavy duty cutting by a milling machine and planomiller. Most suitable for powerful chucking of thickworkpieces and high-speed cutting where a large cutting force is exerted.
［Features］●Super powerful electromagnetic chucks specially designed for heavy duty cutting.
●Various measures provided for easy mounting, easy wiring and quick elimination of residual magnetism.
●Very eﬀective holding power for workpieces that are 15 mm or thicker and sized 140×140 mm or larger.
［mm
（in）］
Work Face

KETZ

3000

125

0

(An example of special fabrication)

φ84

Chuck controller required additionally

（N）
3500

Holding power

Holding power per unit area

KETZ-2550B

KEC-50AS-S

Test piece 50 × 50 mm, SS400 ground surface（N/cm2）
150

φ90
φ24

Environmentallyfriendly

2-M6
40
46
20

14

PERMANENT ELECTROMAGNETIC CHUCKSCHUCK CONTROLLERS

Model EP-Q PERMANENT ELECTROMAGNETIC CHUCK FOR CUTTING

Mod EH-V NON-CONTACT TYPE CHUCK MASTER*
Model〈EH-V305A〉

ＬＯＡＤ

４ ５ ６
３

７

２

８

１

80

〈EH-VE305A〉

5

（１８）

110

Chuck controller required additionally

Wiring grommet(3 places)

（７３）

138

260

175

EP-QN5
ＣＡＵＴＩＯＮ ； 注意30−−−−−−−−−−−−−−−

View Z
Connector for remote
operation box (D-SUB 25P)

80
110

EP-QN7

125
110
80

Z

140

72
60

3060A
4080A
50100A
60100A
4080A
50100A
60100A

ＬＯＡＤ

190
180
165

８

１

９
０

１０

ＶＯＬＴ ＡＤＪ．

ＭＡＧ

ＤＥＭ

ＡＵＸ

ＯＦＦ

４ ５ ６
３

７

２

８

１

Single-phase 100/200 VAC 50／60Hz※¹

Width

Depth

145
（5.70）

210（8.26）

100（3.93）

Current
3A
5A

18（0.70） 16（0.63）
28（1.10） 25（0.98）
50（1.96）18（0.70）
26（1.02）24（0.94）
24（0.94）70（2.75） 28（1.10）
25（0.98）

₂

Mass

₁

630（24.8）820（32.2）

24
40
60
72
24
40
50

980（38.5）820（32.2）1020（40.1）

8（0.31）

10（0.39）

90kg/198 lb
160kg/352 lb
230kg/507 lb
280kg/617 lb
150kg/330 lb
240kg/529 lb
300kg/661 lb

Applicable
Chuck Master

EPS-P2100B

EPS-P2100B
EPS-P2100B-2※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.
※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.

P

９
０

１０

ＤＥＭ ＡＤＪ．
ＫＡＮＥＴＥＣ ＣＯ．，
ＬＴＤ ＪＡＰＡＮ

［mm
（in）］

Le
10

Connector cable: 5 m

P

5

W
We

Shielded wire (20 core wires)
D-SUB connector (Coupling)
２−Ｍ２．
６(Setscrew)〈Dimensions of remote
operation box〉

145

Power
Power
savingsaving100

Minimalheat
generation

N -M

Chuck controller required additionallyL

Environmentallyfriendly
L1

［mm
（in）］
Work Face

210

Standard
Size Model

EP-QS5EP-QS7

80

Mounting Hole Pitch
Width
Height80（3.15）

L2

10

57.6

55

150

ES-M305B

Voltage
90 VDC

₂

24
40
60
72
24
40
50

■EP-QS Series

７

３
２

3060A
4080A
50100A
60100A
3060A
4080A
50100A
60100A

Pole Dimensions

300（11.8） 610（24.0） 252（9.92）
420（16.5） 800（31.5） 372（14.6）
500（19.6）
432（17.0）960（37.8）600（23.6）
552（21.7）
300（11.8） 600（23.6） 252（9.92）
390（15.3） 800（31.5） 332（13.0）
470（18.5）
412（16.2）
1000（39.4）
620（24.4）
572（22.5）570（22.4）760（29.9）
917（36.1）
562（22.1）760（29.9）960（37.8）

Mounting FaceNo. of poles

₂

₁

32
60
84
108
18
32
50
70

16
（0.55）
25（0.98）

630（24.8）820（32.2）

26（1.02）

980（38.5）

25（0.98）
24（0.94）

620（24.4）820（32.2）25（0.98）

1020（40.1）50（1.96）70（2.75）

Tapped Hole on Attractive Face
32
60
84
108
18
32
50
70

8
（0.31）

10（0.39）

Mass
90kg/198 lb
160kg/352 lb
230kg/507 lb
280kg/617 lb
86kg/189 lb
150kg/330 lb
220kg/485 lb
300kg/661 lb

Applicable
Chuck Master
EPS-P2100B
EPS-P2100B-2
EPS-P2100B
EPS-P2100B-2※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.
※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.

Precaution for use Model ES-M103B is a low-cost, readily available type and therefore lacks some functions described above.

Single-phase 100 VAC / 50/60 Hz

No. of poles

EP-QS5-3060A

Dimensions
HeightMounting Face Tapped Hole on Attractive Face

ＰＯＷＥＲ
ＡＬＡＲＭ
ＣＵＲＲＥＮＴ ＶＯＬＴＡＧＥ
４ ５ ６［Application］
Rectiﬁes an input from an AC power source to DC and outputs it to the electromagnetic
chuck. To eliminate the residual holding power of the electromagnetic chuck, the rapid
automatic demagnetization function is activated.
［Features］●An interlock circuit is incorporated.
●Demagnetization is completed quickly by simply pressing the switch. The program has
been designed to give a consistent demagnetizing eﬀect within a short time.
●Model ES-M305B can be used on both input voltages of 100 VAC and 200 VAC.
●The noise resistance feature ensures consistent performance in certain noisy environment.
4-φ●The DC output voltage is constant.
●The fundamental functions required to control electromagnetic chucks are incorporated neatly.

Output

L1

Pole Dimensions

300（11.8） 610（24.0） 252（9.92） 570（22.4）
420（16.5） 800（31.5） 372（14.6） 760（29.9）500（19.6）432（17.0）960（37.8）
917（36.1）
600（23.6）552（21.7）
390（15.3） 800（31.5） 332（13.0） 760（29.9）500（19.6）452（17.8）1000（39.4）
960（37.8）
620（24.4）572（22.5）

Model ES-M ELECTRO CHUCK MASTER*

ES-M103B

Environmentallyfriendly

ＥＬＥＣＴＲＯ ＣＨＵＣＫ−ＭＡＳＴＥＲ

Model
Power Source
OutputWidth
Height
Depth
Mass
EH-V305A
4kg/ 8.8 lb
Single phase 100ー220 VAC
0̶90 VDC 5A 170（6.69） 260（10.2）（50／60Hz）
EH-VE305A（main unit）+ 1kg/ 2.2 lb（operation box）
175
（6.89） 4kg/ 8.8 lb
EH-VE210D Single phase 200 VAC（50／60Hz） 0̶90 VDC 10A 282（11.1） 290（11.4）
6kg/ 13 lb（main unit）+ 1kg/ 2.2 lb（operation box）
※Switch selection (Prior to use, be sure to check the position of the switch.) ※If the magnetic force needs not be adjusted, select Model ES-M.

Power Source

L

［mm
（in）］
Work Face

Standard
Size Model

ＥＬＥＣＴＲＯ ＣＨＵＣＫ−ＭＡＳＴＥＲ

230
250

150

［Application］
Rectiﬁes an input from an AC power source to DC and outputs it to the electromagnetic chuck.
［Features］●Developed as a non-contact type Chuck Master capable of outputting a constant voltage in a wide range of 100
VAC to 220 VAC and providing high speed consistent demagnetizing eﬀect. Also various protective functions
have been incorporated and indicator lamps for individual alarms are provided to identify alarms easily.
●Because a relay (consumable part) is not used, this model can be used continuously and withstand frequent ON/OFF operations.
●The holding power of the electromagnetic chuck can be controlled by adjusting the voltage.
●The rapid automatic demagnetization function is activated to reduce the residual holding power of theelectromagnetic chuck.
●Many input/output signals are employed that can be utilized by connecting them to the pin terminal typeterminal block in the case.
●Model EH-VE is a derived type of Model EH-V305A (operation unit incorporated) to which a remote operation
box is attached for remote operation. For 10A operation, select model EH-VE210D.

Cooling ﬁn

Z

140

Model

N -M

70

View Z

W2

W
We

EP-QN7-50100A

EH-VE305A

Minimalheat
generation

70

（７３）

Power
Power
savingsavingＣＡＵＴＩＯＮ ； 注意−−−−−−
−−−−−
−−−−

20 ±1

ＯＦＦ

175

ＤＥＭ

ＤＥＭ ＡＤＪ．
ＫＡＮＥＴＥＣ ＣＯ．，
ＬＴＤ ＪＡＰＡＮ

138

８
９
１０

230
250
260

ＭＡＧ

ＡＵＸ

７

０

ES-M305B

Connector cable: 5 m<Remote operation box>

１０

４ ５ ６

１

EH-V305A

Le
10

L2

９
０

ＶＯＬＴ ＡＤＪ．
３
２

30

P

20 ±1

Cooling ﬁn

150

ＰＯＷＥＲ

Blank cap
Wiringgrommet(3 places)■EP-QN Series
P

ＥＬＥＣＴＲＯ ＣＨＵＣＫ−ＭＡＳＴＥＲ

ＡＬＡＲＭ
ＣＵＲＲＥＮＴ ＶＯＬＴＡＧＥ

Remote operation type

（１８）

5

［mm
（in）］

Mounting Hole

Mass

150
（5.90） 4−φ4.5（φ0.17）

2.3kg/ 5.1 lb
2.5kg/ 5.5 lb※1…Switch selection ※If the magnetic force needs to be adjusted, select Model EH.

Selection Guide■Selecting an Electro Chuck Master

KANETEC s Electro Chuck Master consists of a rectiﬁer and electronically controlled demagnetization circuit. Residual magnetism varies largely depending on
workpieces (material, shape, mass, etc.). It is therefore necessary to set the demagnetizing time (few seconds to over ten seconds) suitable for particular workpieces.
The most eﬀective demagnetizing patterns for each set time have been programmed in the computer to start automatic demagnetization by button operation. After
studying whether the output required for magnetization may be constant or must be variable, select a model suitable for the rating of the electromagnetic chuck.

■Selection based on electric capacity <Model selection>
Name

Model

DC Output
Voltage
Current

Power Source

Demag.
Control

Rectiﬁer

Chuck Rating
VoltageMax. Current※

Demagnetizer

EH-V305A
EH-VE305A

Single-phase 100 VAC‒220 VAC 50/60 Hz

5A

EH-VE210D
ElectroChuck Master

ES-V220A

10A

0‒90 VDC
Single-phase 200 VAC 50/60 Hz

20A

ES-V230A
ES-M103B

Single-phase 100 VAC 50/60 Hz

ES-M305B

Single-phase 100/200 VAC 50/60 Hz

4.5A
9.0A
Auto

Not required

Not required

90 VDC

18.0A

30A

27.0A

3A

2.7A

5A

4.5A

90 VDC■Selection based on function <Model selection>
Name
Electro Chuck Master

15

Model

Function
Rectiﬁer circuit
Demag. circuit［Application］
Suitable for securing workpieces during cutting on milling machines and machining centers.
［Features］●Magnetization and demagnetization in a very short time.
●The power cord is of detachable connector type for easy use. The ●Tapped holes on the attractive face can be used to install various blocks toconnector cap is of waterproof type.
hold workpieces by various methods according to machining operations.
●Can be used in wet machining operations.
●Straightening blocks are also available that are mounted on the chuck work
●The chuck is very thin, 70 mm in height, and light weight.
face to hold workpieces by an induction ﬁeld. These optional products are●Less accuracy change and highly rigid construction.
very useful for workpieces having irregular attractive faces that for example●Considerable power saving compared with conventional products.
have steps and distortion and for machining the bottom and side faces of(□70: 50% reduction, □50: 70% reduction)
workpieces. (See ■Options on page 32.)

■ Example of machining
Workpiece Material

DC Output
Variable
Invariable

Demag. Control
Auto
ManualChuck Rated Current

ES-M

◯

◯

̶̶

◯

◯

̶̶

＜DC 4.5A

EH-V,VE

◯

◯

◯

̶̶

◯

̶̶

＜DC

Workpiece Size (mm)Cutting Conditions

SCM-440250×300×70

f125 face mill, V=16, fz=0.1, depth of cut 2 mm, width of cut 100 mm, machining center used.

SKS3 hardened

300×150×20

Endmill for high hardness, ﬂutes 6, f12, n 2600, F1000, ap 10, ae 0.1, setup time reduced to 1/3.

9A

16

PERMANENT ELECTROMAGNETIC CHUCKS■EP-Q type holding power characteristic

QN

（kN）

QS

●The □70 size is superior in the absolute holding power and gap characteristic.
●The □50 size is recommended for relatively small and thin workpieces.(The plate
thickness of magnetic saturation is 20 to 25 mm for □50 and 30 to 35 mm for □70.)

30■Relation between chuck models and holding power□70type

25

15

20
0

Ｌ3

□50type

0

10

20

30

40

Thickness（mm）
50

Ｎ−
Ｌ2
Ｌ
5
20±1

85

EP-QD7-3469(Mounting size equivalent to 400 × 800)

150

100

〈An example of calculation〉
Max. holding power on whole attractive face of EP-QS5-4080A
2.94kN×60（number of poles）＝176.4kN｛18000kgf｝

50

Gap（mm）
0

0.1

0.2

0.3

0.4

0.5

Model EP-QS3 RECTANGULAR PERMANENT ELECTROMAGNETIC CHUCK

Very small magnetic pole type suitable for small and thin workpieces!
Minimalheat(4-pole holding, SS400 ground surface)
30
25
20
15

EP-QD7

10

EP-QS7

5
0
0

10

20

30

40

50

Thickness【mm】

［mm
（in）］
Model

Mounting SizeWork Face

Mounting
Face

Pole Dimensions

₁

Chuck controller
required additionally

Ｌ1

Holding power ‒ thickness characteristic［Application］
tion］
Used for securing workpieces during cutting by milling machines, machining centers, etc.
［Features］●An optimum combination of KANETEC s original magnetic pole construction and a construction
dedicated to demagnetization has reduced residual holding power signiﬁcantly.
●Hardened steel and special steel workpieces having large residual magnetism can be released
easily. (Compared with conventional EP-Q)●The optional straightening block (KT-Q70/Q70M) can be used. By mounting various blocks
using tapped holes on the attractive face, various securing methods can be utilized according tomachining operations.
●Can be used in wet operations.
●Special types having four poles minimum are available.

Holding power【kN】

QN5

Holding power

QN7□50 generates the max. holding power of 2.94 kN (300 kgf) or over per pole and □70
generates 5.88 kN (600 kgf) or over per pole.

Environmentallyfriendly

Ｌ3
Side stopper

10

2. Relation between gap and holding power
Holding on whole face.
（kN）
EP-QS7-4080A
EP-QS5-4080A
200
EP-QN7-4080A
EP-QN5-4080A■Holding powerPowersavingＬｅ

Back stopper

Chuck controller
required additionally200Powerful

QS5

Weakness of checker board pattern typepermanent electromagnetic chucks overcome!

Minimalheat
generation

5

Comparison of holding power of chucks of same size

QS7

Power
savingEnvironmentallyfriendlyＰ

Selection of pole size □50 or □70

Model EP-QD DEMAGNETIZING FUNCTION-EQUIPPED PERMANENT ELECTROMAGNETIC CHUCK FOR CUTTINGＷ

Planomiller, horizontal M/C, use Poor holding conditionsof straightening blocks, etc.
such as heavy duty cutting

Holding power

General milling

1. Relation between workpiece thickness and holding power
Test piece held by 4 poles

10

Good holding conditions
such as plate machining.

Ｗｅ■A guide for selection

PERMANENT ELECTROMAGNETIC CHUCKS

No.of Poles

₂

300
260
730
690
250
680
EP-QD7-2669 300（11.8）×800（31.5）（11.8） （10.2） （28.7） （27.1） （9.84） （26.7）
570
530
520
EP-QD7-3453 400（15.7）×600（23.6）
380
340 （22.4） （20.8） 330 （20.4）（14.9） （13.3）（12.9）
EP-QD7-3469 400（15.7）×800（31.5）
730
690
680
（28.7）（27.1）
540
500
490 （26.7）
EP-QD7-5069 550（21.6）×800（31.5）（21.2） （19.6）（19.2）

24

32

70（2.75）

48

₃

₁

330
（12.9）

750（29.5）

250（9.84）

590（23.2）

330（12.9）

750（29.5）

Tapped Hole on
Height Attractive Face

Mass

Electro Chuck
Master24

125kg/275 lb

EPS-D2100A

85（3.34）

32

10（0.39）

160kg/352 lb
EPS-D2100A-2

48

230kg/507 lb※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.

Model EP-D DEMAGNETIZING FUNCTION-EQUIPPED PERMANENT ELECTROMAGNETIC CHUCK FOR CUTTING

Strong holding power and good release performance realized!
PowersavingHolding power【N】

Chuck controller
required additionally

Minimalheat
generation

3500
3000

Work Face
Model

Pole Dimensions
No.of
Poles

EP-QS3-1732A 165（6.49）315（23.6）125（4.92）245（9.64） 18

Mounting Face

HeightMass

₁
165（6.49）335（13.1）

Electro Chuck
Master

16kg/ 35 lb

EP-QS3-2040A 205（8.07）400（15.7）165（6.49）325（12.7） 32（8.07）420（16.5） 45（1.77） 26kg/ 57 lb EPS-P2100B
35 205EP-QS3-3060A 295（11.6）600（23.6）245（9.64）525（20.6） 78 （1.37）295（11.6）620（24.4）
56kg/123 lb（16.3）820（32.2）365（14.3）745（29.3） 162
EP-QS3-4282A 415

415（16.3）840（33.0） 50（1.96） 120kg/264 lb EPS-P2100B-2※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeatedfrequently, the chucks may be damaged by overheat.

17

EP-Q□35

1500

EP-Q□70
1000

EP-Q□50
KETN-1530A

500

EP-DWM

0
0

5

10

15

20

25

Thickness【mm】

SingleStopper(2 faces)

EP-D3060［mm（in）］Work Face

Mounting
Face

Dimensions

Model
₁

₂

Mass

₁

EP-D 3060

304
618
264
558
240
232
638
（11.9）（24.3）（10.3）（21.9）（9.44）（9.13） （25.1）

110kg/242 lb

EP-D 4080

404
786
364
726
340
332
806
（15.9）（30.9）（14.3）（28.5）（13.3）（13.0） （31.7）

185kg/407 lb

EP-D50100
EP-D60100

504
464
440
432
（19.8） 1038 （18.2） 978 （17.3）（17.0） 1058
（41.6）
604 （40.8） 564 （38.5） 540
532（23.7）（22.2）（21.2）（20.9）

Electro Chuck
Master

W2

［mm
（in）］

2500
2000

W1

［Application］
Used for securing workpieces during cutting by milling machines, machining centers,etc.
＜Newly developed
35-mm square micro［Features］
poles＞●Compared with conventional permanent electromagnetic chucks for cutting, thistype has higher holding power on small and thin workpieces.
●Compared with conventional chucks, the residual holding power has been reduced to a third maximum.
●An original construction is employed to keep the height below 50 mm, thus realizing thin and light weightchucks.
●Electricity is supplied momentarily only when mounting and demounting workpieces, thus minimal heat is
generated and highly precise machining can be expected. Also electricity is saved.
●Can be used in wet operations.
●The employment of a quick connector facilitates connection/removal of the cable.

［Application］
Used for securing workpieces during cutting by milling machines,
machining centers, etc.
［Features］●A coil dedicated to demagnetization has signiﬁcantly improved theworkpiece release performance when the chuck is turned oﬀ.
●The magnetic pole arrangement to concentrate magnetism on theworkpiece provides strong holding power.
●Hardened steel and special steel workpieces having large residual
magnetism can be released quicker than the conventional chucks.
●Electricity is used only when mounting and demounting workpieces,thus minimal heat is generated and electricity is saved.
●Can be used in wet operations.

W
We（Test piece: □50 × T25, S15C）

Environmentallyfriendly

EPS-D2100A

12

30
Le

305kg/672 lb

L

EPS-D2100A-2
360kg/793 lb※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC
chuck controller is used. ※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per
several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.

85

Holding power-thickness characteristic

20±1

EP-QS3-3060A

L1

18

PERMANENT ELECTROMAGNETIC CHUCKSPERMANENT ELECTROMAGNETIC CHUCKS

Model EP-DV POWERFUL PERMANENT ELECTROMAGNETIC CHUCK WITH VACUUM FUNCTION
Power
savingMinimalheat
generation

Hybrid chuck to handle
diversiﬁed materials!

Chuck controller and vacuum
system required additionally

Compact design for limited installation space.

EP-DV3060

120

165

４−φ７

Model

190（7.48）×165（6.5）×255（10.0）

Power source

Single-phase, 200 VAC 50/60 Hz

ＭＯＤＥＬ
ＥＰＳ−Ｐ２１００Ｂ
ＩＮＰＵＴ
ＡＣ２００ＶＯＵＴＰＵＴ ９０Ｖ
ＡＭＰ．
１００Ａ

Output capacity

ＰＯＷＥＲ

ＭＡＧ／ＤＥＭ

４ ５ ６
３

４ ５ ６
７

３

８

２

９

１

２
１
０

７
８
９
０

１０

１０

ＭＡＧ ＡＤＪ．

ＤＥＭ ＡＤＪ．

ＭＡＧ

ＤＥＭ

Ｌ1

120

Ｄ

４−φ７

Ｈ

ＭＯＤＥＬ ＥＰＳ−Ｄ２１００Ａ
ＩＮＰＵＴ ＡＣ２００Ｖ
ＯＵＴＰＵＴ ＤＣ１０〜９０Ｖ
ＡＭＰ．
１００Ａ
ＰＯＷＥＲ

Model

Nominal Size

４ ５ ６

３

７

３

７

２

８

２

８

９

１

１
０

₄

₂

92
（3.62）

Grid Pitch

304
638（11.9） （25.1）

₃× ₃

Mass

EP-DV 3060300
（11.8）
310
638
558
× 600
（23.6） （12.2） （25.1） （21.9）

EP-DV 4080

42（1.65）
378（14.8）35
42（2+8+2+30） 404
20
125
400
（15.7）
410
806
726
79
806
280kg/（1.65）
× 800（31.5） （16.1） （31.7） （28.5） （1.37） （3.11）（15.9） （31.7） （0.78） （4.92） ×42（1.65） ×756（29.7） 617lb

EP-DV50100

500（19.6）
510
1058
978
×1000（39.4） （20.0） （41.6） （38.5）

87（3.42）

252（9.9）170kg/
×588（23.1） 374lb

504
1058
（19.8） （41.6）

462（18.1）
450kg/
×1008（39.6） 992lb

7.6kg（16.7）

１０

９
０

１０

ＭＡＧ ＡＤＪ．

ＤＥＭ ＡＤＪ．

Applicable
Vacuum System

ＭＡＧ

ＤＥＭ

EPS-P2100A-2

190（7.48）×165（6.5）×255（10.0） 190（7.48）×200（7.87）×255（10.0）

Power Source

Single-phase, 200 VAC 50/60 Hz
10 VDC ‒ 90 VDC pulse 100 A

Output switchoverNo switchover

Magnetizing time (approx.)・
demagnetizing time (approx.)

1 sec./4 sec.

Breaker capacity (ref.)
Mass

ＫＡＮＥＴＥＣ ＣＯ．
，
ＬＴＤ．ＪＡＰＡＮ

EPS-D2100A

EPS-P2100A

Dimensions（W×H×D）
Output capacity

ＭＡＧ／ＤＥＭ

255
280
300

42

ｈ

Ｂ2

Ｂ3

Ｂ1

ｔ

Ｂ4

Model
ＥＰ ＣＨＵＣＫ ＭＡＳＴＥＲ

ElectroChuck Master

30A
7.5kg
（16.5）［Application］
A chuck controller dedicated to permanent electromagnetic chucks equippedwith a demagnetizing function.
［mm
（in）］

Ｐ42（2+8+2+30）

Eﬀective Area

3 sec.

Model EPS-D CHUCK MASTER* DEDICATED TO DEMAGNETIZING FUNCTION-EQUIPPED PERMANENT ELECTROMAGNETIC CHUCK

Ｌ3

Height1 sec.

※The power cable must be larger than 3.5 mm2 and less than 10 m.

４ ５ ６

Mounting Face

2

Magnetizing time (approx.)・
demagnetizing time (approx.)

ＫＡＮＥＴＥＣ ＣＯ．，ＬＴＤ． ＪＡＰＡＮEPS-P2100B-2

42

Pole Pitch

No switchover

Mass

［mm
（in）］
Work Face

10 VDC ‒ 90 VDC pulse 100 A

Output switchover

Breaker capacity (ref.)Ｌ2

An example of grinding of brass by utilizing
the permanent electromagnetic feature

EPS-P2100B-2

Dimensions（W×H×D）

Ｌｅ

An example of milling by utilizing thepermanent electromagnetic feature

EPS-P2100B

ＥＰ ＣＨＵＣＫ ＭＡＳＴＥＲ

190

Vacuum coupler (3/8”)

Suction port
(2 places)

［mm
（in）］

190

［Application］
Permanent electromagnetic chucks for cutting equipped with a gridseal type vacuum chuck function added to hold workpieces during
cutting and grinding of magnetic and nonmagnetic workpieces.
［Features］●The strong holding power makes these chucks suitable for cuttingof magnetic materials.
●Electricity is used only when mounting and demounting workpieces,thus minimal heat is generated and electricity is saved.
●Sin c e t h e s e c h u c k s h a v e a c o n s t r u c t io n d e dic a t e d t odemagnetization, they have good workpiece release performance
when they are turned oﬀ.
●The vacuum chuck can be set to a desired area by use of seal
rubber according to workpieces.
●When machining nonmagnetic workpieces, the permanentelectromagnetic feature can be utilized to hold magnetic
substances around them to secure them ﬁrmly.

255
280
300

Environmentallyfriendly

Model EPS-P EP CHUCK MASTER* DEDICATED TO PERMANENT ELECTROMAGNETIC CHUCK EP-Q SERIES

2
3 sec./6 sec.
30A

7.5kg（16.5）8kg（17.6）※The power cable must be larger than 3.5㎡ and less than 10m.
EPS-D2100A

VPU-EG
VPU-E10
VPU-D20

EPS-D2100A-2■Options

Straightening block; for □50 and □70 (KT-Q)※The chuck controller, vacuum system and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.

Model EP-DWM POWERFUL PERMANENT ELECTROMAGNETIC CHUCK FOR HEAVY DUTY CUTTING
EnvironmentallyfriendlyPowersavingChuck controller
required additionally

Minimalheat
generation［Application］
Suitable for such precision machining of relatively large load as heavy
duty grinding and cutting and for securing workpieces having steps suchas linear motion guides.
［Features］●Capable of holding relatively small workpieces, workpieces having asmall attractive area and concave workpieces.
●The addition of a construction dedicated to demagnetization has
improved the workpiece release performance when the chuck isturned oﬀ.
●Hardened steel and special steel workpieces having large residual
magnetism can be released quickly.
●Electricity is supplied momentarily for mounting and demounting
workpieces, thus minimal heat is generated and electricity is saved.
●The chucks can be used in wet operations and have improved watertightness.
●A resin-bonded structural face plate having little environmental burden
is employed.

EP-DWM3060

t

L1
Le

h

H

B

Strong magnetic force &good release performance& high water-tightness!

L2
P＝2+8+2+16

EP-DWM2050
EP-DWM3060
EP-DWM4080

200（7.87）
300（11.8）
400（15.7）■Model of special speciﬁcationKT
Q50(Stationary)
KT-Q50(Stationary)490（19.2）
600（23.6）
820（32.2）

Mounting Face432
（17.0）
544（21.4）
768（30.2）

Height490（19.2）
25（0.98）600（23.6）
820（32.2）

Mass

ElectroChuck Master

70kg/154 lb
20（0.78）105（4.13）

125kg/275 lb

EPS-D2100A

230kg/507 lb

ith T-slots
Model w able
avail

［mm
（in）］

［mm
（in）］
Work Face

Model

KT-Q50M(Movable)Model□50（1.96）
×H28（1.10）□70（2.75）×H37（1.45）

Type

KT-Q50

KT-Q70Stationary

KT-Q50M

KT-Q70M

Movable※For more information,please contact us.

EP-QX50-S※The H dimension is the standard height.

※The chuck controller and clamp parts are not included. ※The KANETEC chucks work best when a KANETEC chuck controller is used.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeated frequently, the chucks may be damaged by overheat.

19

20

PERMANENT ELECTROMAGNETIC CHUCKSBLOCKS FOR MC

Model EPC-AST ROUND PERMANENT ELECTROMAGNETIC CHUCK

Most suitable for ﬁve-face machining with a workpiece
overhung and for securing irregular-shaped workpieces!

Revolutionary permanent electromagnetic chuck!
Magnetic force adjustable!
10

16

8
18

Patented
EnvironmentallyfriendlyPowersaving

de
De
D1
Dp

n -φ20n -φ13<An example of special fabrication>

D2
Mounting FaceNo. of
Poles

₁

500
500
460 100
EPC- 50AST（19.6）（19.6）（18.1）（3.93）700
700
656 120
EPC- 70AST（27.5）（27.5）（25.8）（4.72）

8

Height₂

200（7.87）
400
5（15.7）（0.19）500（19.6）

8

27A

500
130
（19.6）（5.11） 180
VDC
700
140
12
（27.5）（5.51）

900
900
850 200
EPC- 90AST（35.4）（35.4）（33.4）（7.87）

121200 1200 1150 300
EPC-120AST（47.2）（47.2）（45.2）（11.8）

150
650
6
1000
18
18
（39.4）（5.90）（25.5）（0.23）

32A

Power Source

EPS-RW230A

Single-phase
200 VAC（50/60Hz）

EPS-RW250A
EPS-RW275A

Width

30A
180 VDC(16 steps)

50A

400
（15.7）

75A

L

Chuck controller
required additionally
［mm
（in）］

Approx. 140kg/ 308 lb EPS-RW230A
Approx. 330kg/ 727 lb

45A

Approx. 600kg/1323 lb

60A

Approx.1100kg/2425 lb

Dimensions

Model
EPS-RW250A

Dimensions

Current

EPB-1F2525A※Dedicated operation box(Size 140×70×155,cord 5 m)
included.

Mass

HeightDepth

480（18.8）

190（7.48）

Approx. 15kg/33.0 lb

725（28.5）

250（9.84）

Approx. 35kg/77.1 lb

Pole
Size

No.of
Poles

Holding
Power

Mass

EPB-1F1625A

160（6.29）

2

11.8kN

40kg/ 88 lb

EPB-1F2525A（9.84）
250
150
70（9.84）（5.90） （2.75）

423.5kN

60kg/132 lb

EPB-1F3333A

330
330（12.9） （12.9）

9

53kN

120kg/264 lb

EPS-RW275A

H

OutputVoltage

Minimalheat
generation

Electro Chuck
Master

Mass※The chuck controller is not included.
※The slip ring (carbon brush included) is optional. The brush holder support bar for the slip ring should be provided by the user.
※Turning the permanent electromagnetic chucks on and oﬀ must be limited to once per several minutes. If on/oﬀ operations are repeatedfrequently, the chucks may be damaged by overheat.
［mm
（in）］

Model

Power
saving［mm（in）］

Voltage Current

300
125（11.8）（4.92）［Application］
Designed for holding workpieces on such machines as machining centers
and NC machine tools. Most suitable for machining workpieces by 5-facemachining centers, etc.
［Features］●By securing a workpiece overhanging, the setup time on the 5-facemachining center can be shortened.
●These blocks can be used in wet operations and therefore can be used
like normal magnetic chucks.
●Since these blocks are of permanent electromagnetic type, the holding
power is not aﬀected by power failure or cable breakage. Also since very
little heat is generated, thermal inﬂuence on workpiece is minimal.
●The metal connector design facilitates disconnection of the power cable.
(Pallet change and external setup facilitated.)

Environmentallyfriendly

W

Work Face

Nominal
Size

Model

Model EPB PERMANENT ELECTROMAGNETIC BLOCK

A size φ 1200 and larger is also available.

K

EPC-50AS-S

H

Minimalheat
generation［Application］
Suitable for machining of ring-shaped workpieces such as
bearings while rotating them on lathes, turning machines,
cylindrical grinders and rotary grinders.
［Features］●When used in combination with a dedicated controller
equipped with a magnetic force adjust function, themagnetic force can be adjusted between strong and weak.
●Since internal heat generation and thermal distortion areminimal, highly precise machining is possible.
●Can be used in wet operations.
●These chucks are provided with T-grooves to make themsuitable for various workpieces.

25（40） 85

Chuck controller
required additionally

250

ElectroChuck Master

EPS-P2100B※The chuck controller is not included.
※Turning the permanent electromagnetic blocks on and oﬀ must be limited to once per several minutes. If on/ oﬀ
operations are repeated frequently, the blocks may be damaged by overheat.
※The holding power is based on a test piece of SS400, 50 mm thick, ground surface held on the whole face.

20

Model EPC-Z POWERFUL ROUND PERMANENT ELECTROMAGNETIC CHUCK

Construction machinery / Ship building / Nuclear power plant / Wind power generation
Highly precise machining of ring-shaped workpiece such as bearings!
Powersaving［Application］
Suitable for machining of ring-shaped workpieces such as bearings while rotating themon lathes and cylindrical grinders.
［Features］●The employment of a magnetic pole construction suitable for cutting has increased
the holding power. Suitable for cutting operations where large load is applied.
●The rectangular magnetic poles provide consistent holding power regardless ofworkpiece sizes.
●By using included blocks with T-grooves and adapter blocks, various workpieces,small and large, can be held.
●By mounting blocks, workpieces can be machined while being lifted. This featureenables it to machine workpieces from any direction. Also removal of chips andmaintenance are easy.
［mm
（in）］

Minimalheat
generation

Chuck controller
required additionallyModel

Dimensions

No.of Poles

Applicable Workpiece
DiameterMin. dia.

EPC-Z60

φ 640（25.1）
×90（3.54）EPC-Z90

φ 950（37.4）
×90（3.54）EPC-Z120 φ1250（49.2）×90（3.54）

14
28（14＋14）Mass

Max. dia.
600（23.6） 170kg/ 374 lb

Model EPB-2F DOUBLE-FACE HOLDING PERMANENT ELECTROMAGNETIC BLOCK
EnvironmentallyfriendlyPowersavingChuck controller
required additionally

Minimalheat
generation

L

Electro Chuck
MasterEPS-PZ2100A-2（35.4） 410kg/ 904 lb
250（9.84） 900

EPS-PZ2100A-4

1200（47.2） 725kg/1598 lb

EPS-PZ2100A-6

W

Environmentallyfriendly

EPC-Z90

EPC-Z180 φ1850（72.8）×110（4.33）

43800（31.5） 1800
（70.8）1580kg/3483 lb EPS-PZ2100A-10

EPC-Z200 φ2050（80.7）×110（4.33）

50

1000
（39.4） 2000
（78.7）1800kg/3969 lb EPS-PZ2100A-10※The chuck controller is not included.
※The power is supplied through the metal connector (with cable connection conﬁrmation signal) on the side of the chuck.

<Chuck controller>
Model

EPS-PZ2100A-6
EPS-PZ2100A-8
EPS-PZ2100A-10

21

EPB-2F2525

［mm
（in）］

［mm
（in）］
Power Source

EPS-PZ2100A-2
EPS-PZ2100A-4

H

EPC-Z150 φ1550（61.0）×110（4.33） 44（22＋22） 500（19.6） 1500（59.0）1280kg/2822 lb EPS-PZ2100A-8［Application］
Suitable for various cutting applications such as by the MC.
［Features］●As a workpiece is held on both faces, no mechanical clamping isnecessary. It can be set on the machine table easily.
●By securing a workpiece overhanging, ﬁve faces can be machined in
one chucking to improve the machining eﬃciency and accuracy.
●Since these blocks are of permanent electromagnetic type, theholding power is not aﬀected by power failure or cable breakage.
Also since very little heat is generated, thermal influence on
workpiece is minimal.
●The power cable is of metal connector type that can be
disconnected easily to make it suitable for pallet change andexternal setup.
●Several blocks can be used at the same time according toworkpiece sizes and machining conditions.

OutputVoltage

Current

90 VDC × 2 times switching
200 VAC（50／60Hz）
1φ

90 VDC × 4 times switching
90 VDC × 6 times switching
90 VDC × 8 times switching
90 VDC × 10 times switching

Pulse 100 A(per switching)

Dimensions

Breaker
Capacity

Width

Height

Depth

30A

450
（17.7）

450（17.7）

200（7.87）

60A

75A

650
（25.5）

750（29.5）

600（23.6）

850（33.4）

800（31.5）

925（36.4）

Mass
15kg/33.0 lb
35kg/77.1 lb

250（9.84）

40kg/88.2 lb
50kg/110 lb

300（11.8）

80kg/176 lb

Model

Dimensions
W

L

EPB-2F2525

250（9.84）

250（9.84）

EPB-2F3333

330（12.9）

330（12.9）

H100（3.93）

Pole Size

No. of Poles(per Face)

Holding
Power

Mass

4

23.6kN

40kg/ 88 lb

953.0kN

70kg/154 lb

70（2.75）

ElectroChuck Master
EPS-P2100B※The chuck controller is not included.
※Turning the permanent electromagnetic blocks on and oﬀ must be limited to once per several minutes. If on/ oﬀ operations are repeated frequently, the blocks※The holding power is based on a test piece of SS400, 50 mm thick, ground surface held on the whole face.

may be damaged by overheat.

22

HOLDING TOOLS
Model KRS HANDY SUPPORT JACK “RISING”

Patented［Application］
Suitable for supporting the overhanging portion of workpieces during machining andmeasurement.
［Features］●The support bolt moves up and down as the movable bolt is turned. This design enables
expansion/contraction or up/down movement quickly by one hand.
●Since the support bolt does not rotate, it does not damage workpieces when it
contacts them.
●The movable/support bolts can be locked simultaneously by tightening the knob toenhance the work eﬃciency.
likely to be loosened by vibrations, use the included grub screw.
※ If the knob is like
●The use of top and bottom two types of attachments (optional) expands the applications.

Supportbolt

Movablebolt<Top
p workpiecepsupporter(Optional)>
upporter(Optional)
pp
Cap
Knob

KRS-045
KRS
045
KRS-HQM
M6,depth10

KRS-HVM<Magnets for bottom part mounting(Optional)>

When up

When down■Main unit
Model

Supporting the overhanding
portion of workpiece

Main
Unit

［mm
（in）］
Heightφ45
49-82
KRS-045（1.77） （1.92-3.22）

Allowable Loadin F Direction

Mass

9.81kN

0.48kg/1.05 lb

KRS-M2※ A grub screw is included.

KRS-M4■Types of Chucks by Applications
Machining

Application

Machine・Material roughmachining・Machining
center

Generalcutting・Material cutting
・General finishing

・Milling
machineLight duty
cutting・Finishing(Straightening)

・Turning
machineHeavy duty
grinding

・Material
grinding

Generalgrinding

・General finishing・Finishing(Straightening)

Precisiong
rinding・Precisionfinishing・Rotary
grinder・Surface
grinder
・Belt grinder
・Cylindrical
grinder・Mold grinder

Electric
discharge
machining・Moldmachining

Machining load

Heavy
dutycutting

Applicable Chuck (Typical Model)

Electromagnetic: KETN
Electromagnetic (round):
KEC-AS
Permanent electromagnetic(round): EPC-AST
Permanent magnetic: RMA-C

・LatheElectromagnetic: KETZ
Permanent electromagnetic:
EP-Q, EP-D
Permanent electromagnetic(round): EPC-Z
Electromagnetic: ACSHIM KEZF
Permanent magnetic: RMA

Permanent
magnetic:
RMT, RMAW
Permanent
magnetic(round):
RMC, RMC-X
RMAW-C・Electric
discharge
machine
0

50

100

150

200

250

Holding power (□50×t 25, S15C test piece)■Types of Chucks
TypeElectromagnetic
chuck

Permanent
magnetic chuck

Electric
discharge
machining

Model

Application
Heavy duty cutting
high-speed cutting

Straightening
Powerful waveform type

KETN

CuttingRound type

KEC-AS

Cutting

Powerful type

RMA
RMAW
RMT
RMA-C
RMC-X

Cutting,heavy duty cutting
Light duty grinding and cutting of thin to thick workpieces
Light duty cutting and grinding of small and thin workpieces
Cutting

Milling machine
Grinder,Milling machineLight duty cutting,grinding

Grinder,Lathe

Heavy duty cutting,cutting

Milling machine,machining center

Turining,grinding

Cylindrical grinder,rotary grinder

For small and thin workpieces
Standard type
Powerful Round typeStar-pole Round type
Standard Round type
Powerful type
Demagnelizing function type
Round type

RMC
EP-Q
EP-D
EPC

Machining center
Milling machine
Large planomiller
Grinder, lathe, rotary grinder,
turning machine (face lathe)

Grinder,electric discharge machine
Lathe

KANETEC CO.,LTD.

KANETEC U.S.A. CORP.

INTERNATIONAL DEPARTMENT

140 W, Devon Avenue, Bensenville, IL 60106, U.S.A.
TEL: 630-860-1545, 860-2230
FAX: 630-860-9443

No. 2-9, 3-chome, Iwamoto-cho, Chiyoda-ku Tokyo Japan
TEL : TOKYO 03-5823-7013
FAX : +81-3-5823-7018
Home page address: http://www.kanetec.co.jp/
E-mail address: kokusai̲01@kanetec.co.jp

23

Applicable Machine

KEZX
KETZ
KEZF

With T-groove
Super powerful type300［kgf］