Roller gear index table

3PMMFSHFBSNFDIBOJTN

3PMMFSHFBSJOEFYUBCMF

NPEFM.%'

3PMMFSHFBSJOEFYUBCMF

model

MDF130High speed indexing with a heavy jig

page 4Maintenance free even in high speed and high load operation

page 5

Realizing high-quality cutting of large jigs and large workpieces

page 6Highly efficient production without brakes

page 8

Downsizing of production equipment through compact body

page 10Processing large workpieces and two workpieces with a small

page 10machining center

Highly efficient production with 18-port rotary joint

page 12Specification and outer dimension for model MDF and MDS

page 16

Rotary joint piping example

page 28

Roller gear drive for high-speed indexing of heavy jigs

● Because the roller gear cam and turret are processed with high precision, stabel preload can beapplied to the cam mechanism and there is no backlash. The high-speed indexing can be performed
under high load conditions that could not be realized with a worm gear index table.

TurretCam follower

PreloadPreloadCam rib

Preload mechanism
PreloadPreloadLock torque of the servo motor can be transmitted at all times, by means of preload and the braking force(clamping force) is applied to the turret shaft thereby no external brake is required.
4

Maintenance free even in high speed and high load operation● Roller gears are rolling transmission and there is no wear and accuracy is stable even at high load andhigh speed. The high-quality machining enables a stable production without maintenance for a longterm.
On the other hand, worm gears are slip transmission and it causes the increase of backlash as theworm wears due to high load and high speed rotation, therefore periodical inspection and backlash
adjustment must be performed to avoid machining defect or degrading indexing accuracy.

Worm gear
Periodical maintenance isrequired to keep the accuracy
due to aging degradation.

Lost motion (arc sec)

120
100
80

Roller gear

60

Accuracy is stable and40sustainable for a long time
without maintenance.

2000500,000

1,000,000

1,500,000

2,000,000

From our endurance test

Number of operations (rotations)

Big problem of worm gears
Because worm gears are in sliding contact, wear occurs when a large load is applied
or index speed is increased and backlash adjustment is required at an early stage.
Accuracy issues also arise.

Wear

5

High torque roller gears enable high-quality● The high torque characteristics and servo lock function of the roller gear index table can increase
cutting conditions even at machining points far away from the rotation center and improve
productivity and machining accuracy.

Example under the machining load torque 200N・m
Allowable torque Max 346 N・mTurretCam follower outer ring

Cam follower needle

Cam follower shaft

200 mmMachining load 1,000 N

40 mm

Work

Work+Jig 160 kg

Jig

6cutting with high eﬃciency.

● The brakeless and high-torque roller gear index table can withstand the machining load even when
the unbalanced load of 90°indexed high-rigidity and heavy jig is large and provide high productivity.

Example under the total load torque 170N・m
Machining load torque 50 N・m

unbalance torque 120 N・m

Allowable torque Max 346 N・m

40 mm

75 mm
50 mm

Machining load

1,000 N

Work+Jig 160 kg（Unbalance load 1,600 N）

TurretCam follower outer ring
Cam follower needle
Cam follower shaft

Jig

Work

7

The preloaded high-precision roller gear index table model MDF● The roller gear of the speed reduction mechanism without backlash can maintain the servo lockfunction even with a heavy load and can perform a brakeless machining.
There is no ON / OFF action by the brake, and the time loss during indexing is “0”, resulting in
extremely high productivity.
Also, the index point is not displaced when the brake is on, and accuracy does not deteriorate.
In addition, the risk of machine down is reduced because there is no factor for air brake failure, whichcauses a problem in high humidity areas where the factory air environment is poor.

①
Roller gear

2 . 0 secmachining②

90°
rotation

machining

0.5 sec90°
rotation

0.5 sec

machining①
Worm gear

4 . 1 secmachining

Performance example

Brake
OFF

0.4 sec90°
rotation

0.5 secBrakeONmachining

0.3 secBrakeOFF

0.4 sec

Significant reduction in tact time

● A worm gear index table with a table diameter of ø260mm was used and the jig was too large to increase
the index speed.
● Compact, high torque and high speed roller gear index table model MDF130 has reduced tact time by 11%(3.3 seconds), enabling production efficiency improved a great deal.

8130 enables brakeless operation and high productivity.

● As shown in the figure below, the worm gear index table requires the braking the rotating shaft andit takes 0.4 seconds to brake OFF x 3 times = 1.2 seconds
it takes 0.3 seconds to brake ON x 3 times = 0.9 seconds

thereby it takes total 2.1 seconds

to conduct 1 operation required, however, as for roller gears, the brake ON / OFF action will benaught. In other words, 2.1 sec. differnce between the two will work later significantly for the
production efficiency. This time difference is surely more than the initial cost difference between theroller gear and the worm gear.

③
180°
rotation

2.1 sec shortened

1.0 sec②
90°rotation

0.5sec

③
Brake
ON

Brake
OFF

machining

0.3 sec

180°
rotation

1.0 sec

0.4 sec

Process 1

Operating hours

Machineoperation rate

Brake
ON

0.3 sec

Production time
(30,000 pieces per month)

2 shifts,8-hour workingper shift＝16 hours

Worm gear80％

30.0 sec

3 1 2 hours（16 hours × 80％ ＝ 46,080 sec.）
2 shifts,8-hour workingper shift＝16 hours

Roller gear80％

26.7 sec

2 7 8 hours（16 hours × 80％ ＝ 46,080 sec.）

2.1 days for 1 month (20 days)

25.2 days for 1 year can be shortened9model MDF130 integrating high torque roller gear in a compact● Large sized workpiece or two piece machining is feasible even on #30 machining center with tablesizing X axis 850 mm and Y axis 410 mm, enabling 765 mm by 400 mm workpiece setting space.

Support table model MDS130

163.5 mm
G thread piping
Manifold blockPage→29

10Work space

X 765 mm

body can realize dramatically improve productivity.

● The compact roller gear index table model MDF130 with a body width of 164.5 mm and the support
table model MDS130 with a width of 163.5 mm achieves the selection of a smaller machining center.

Work space

Y 400 mmRoller gear index table model MDF130

164.5 mm11

7MPa rotary joint 18 ports plus 2 ports for cutting ﬂuid allows● 18-port rotary joint allows to select sensor model work clamp, enabling the user to have workpiecetransfer robot (loader) synchronized with the jig which helps to eliminate down time when
exchanging the workpinces, Combining feasure of high speed indexing and the 18-port rotary joint
can generate a synergy effect to imporove total productivity.

Pascal is a manufacturer of high quality rotary joints.
20,000 units have been delivered in 20 years.

Roller gear index table model MDF

7MPa Hydraulic and air：9 port
Cutting ﬂuid：1 port

Hydraulic oil /Air

Cutting ﬂuid

Hydraulic oil /Air

164.5 mm12

a sensor model work clamp and productivity increase● The coolant through the center makes it easy to eliminate the metal chips being deposited on thejig.

PAL Sensor

PAL Sensor

Swing clamp sensor model model CTM

Support table model MDS(Unclamp/Clamp/Incomplet clamp detection)

7MPa Hydraulic and air：9 port
Cutting ﬂuid：1 port

Work

Hydraulic oil /Air

Cutting ﬂuid

Hydraulic oil /Air

Jig

163.5 mm

13

The compact body enables a small-sized machining

Roller gear index table model MDF130

Rotary joint

7MPa Hydraulic and air 9 port
Cutting ﬂuid
1 port164.5 mm147MPa Hydraulic and air port
Cutting ﬂuid port

center to machine large-size workpieces.

Support table model MDS130

Rotary joint

Rotary joint

No port

7MPa Hydraulic and air 3 port
Cutting ﬂuid
1 port93.5 mm

106.5 mm

Rotary joint

7MPa Hydraulic and air 9 port
Cutting ﬂuid
1 port163.5 mm

7MPa Hydraulic and air port
Cutting ﬂuid port

15

Roller gear index table model MDF130

Specifications

Specifications

Servo motor
mounting position

L ：Left

Rotary joint

Servo
motor

R ：Built-in

Piping port ofrotary joint

Servo motor
brake

B ：Servo motor with brake：G threadF

MDF130A
R ：Right

Servo
motor

：None

C ：Rc thread：Without brake

Example：MDF130AL-RF
Servo motor
Mounting position ： Left

Rotary joint

Rotary joint： Without brake

7MPa Hydraulic and air 9 port

Cutting ﬂuid 1 portf 30
r o ft 1e
et shaam t
Di utpuoCenter height● For the hydraulic connection, Rc port is applied, a sealing tape is normally used for the piping but bits of thetable may cause internal leakage of a rotary joint or malfunction of the actuator. Model MDF introduces G
port which accepts the fittings with bonded seal being composed with a metal ring and rubber thereby nobits or debris that causes internal leakgae is produced when piping.
● A servo motor without a brake cannot hold the table stop position when the servo is OFF. If it is necessary to
hold the table stop position when the servo is OFF, choose a servo motor with a brake. (The servo motor brakeis just for holding position in place and cannot support machining load.)16

Roller gear index table model MDF130

Model
Mass

kg

Specifications

MDF130A □-R□F□

MDF130A □-F

Hydraulic and air 9 port
Cutting fluid 1 port

No rotary joint

50

45

Output shaft diameter

mm

ø130

Center height

mm

150

Inner diameter of output shaft (mouth)

mm

ø30H7

Total reduction ratio
Max. rotation speed

1/60
rpm

50 (Motor rotational speed 3000rpm)

Servo motor

FANUC αiF4/5000-B

Index accuracy

arc sec±20

Repeatability

arc sec

10 ＊Lubrication

Oil bath

Operating temperature

0‒40

℃

Allowable loading capacity (When rotating)Work loadWithout Support tablekg

80

With Support table

kg

160

2

1.88

Moment of inertia

kg･mAllowable loading capacity (When machining)
Radial loadkN

6

Loaded torque

N･m

346

Loaded moment

N･m

600

＊: The figure indicates 0.0048mm displacement at the point of 100mm off from output shaft.

Specifications of rotary joint
Ports

Hydraulic and air 9 port

Number of circuits
Hydraulicandair

9 ports

Working fluid
Max. working pressure

General mineral based hydraulic oil (ISO-VG32 equivalent) / Air7

MPa

Piping port

G1/8（Rc1/8 for Rc threaded type）

Number of circuits
Cutting
fluid

Max. working pressure
Piping port

Cutting fluid 1 port

1 circuit (in the center)
0.3

MPa

G1/8（Rc1/8 for Rc threaded type）● In case that air is used for rotary joint, use of lubricator is recommendable.
● In case that working fluid is used, leakage of oil film to the adjacent circuit occurs inside the rotary joint. Whenboth the working fluid and air are used, provide a drain circuit between the hydraulic circuit and air circuit. (Incase of the air circuit which allows leakage of oil film, there is no need to provide a drain circuit.)● Supply the cutting fluid which is filtered to connecting port of cutting fluid.
● Purge air to prevent intrusion of cutting fluid into the inside of motor cover. Supply dried clean air toconnecting port of air purge. (Reccomendation purge pressure 0.02MPa and flow volume 15L/min.) And makesure to open the exhaust port of air purge.
● The value for the allowable moment of inertia indicates when table rotates Max. number of rotation at
unbalanced torque 0. The lower the table rotation speed is set, the larger the allowable moment of inertia
becomes.
● The radial load, loaded torque and loaded moment are included in work load.
● The loaded torque shall be 40% of time duty and less than 30 sec.

17

Hydraulic and air 9 port

Rotary joint

Cutting fluid 1 port（C）F
model MDF130AR-R
81

81

4-ø11 Hole

17.5

85

132

10.5

40

Thread for lift M10×1.5

ø130

Oil filler port G1
164.5
4.5

160

（47.4）

Output shaft
Page→26

20

115

5

150

254

295

A

Servo motor

18 h7
Drain port G1/2

96

116

Positioning key

212

202
414

Air purge connection port
Rc1/8

Motor cable37.5

Primary connection port

115

63

59

Page→26

Oil level gauge
Check valve for prevent
internal pressure rise

Drain port G1/2
View A18

No rotary joint
model MDF130AR-F

81

4-ø11 Hole

81

17.5

85

132

10.5

40

Thread for lift M10×1.5

ø130

Oil filler port G1
164.5
4.5

160

（47.4）

Output shaft
Page→26

20

115

5

150

254

295

A

Servo motor

18 h7
Drain port G1/2

96

116

Positioning key

212

202
414

Air purge connection port
Rc1/8

Motor cable

115

63

59

37.5

Oil level gauge
Check valve for prevent
internal pressure rise

Drain port G1/2
View A
19

Rotary joint

Hydraulic and air 9 port

Cutting fluid 1 port

With brake（C）FB
model MDF130AR-R
81

81

4-ø11 Hole

17.5

85

132

10.5

40

Thread for lift M10×1.5

ø130

Oil filler port G1
164.5
4.5

160

（47.4）

Output shaft
Page→26

20

115

5

150

254

295

A

Servo motor

18 h7
Drain port G1/2

96

116

Positioning key

212

220
432

Motor cable37.5

Primary connection port

115

Oil level gauge

Air purge connection port
Rc1/8
Check valve for prevent
internal pressure rise

Drain port G1/2
View A

20

63

59

Page→26

No rotary joint

With brakemodel MDF130AR-FB

81

81

4-ø11 Hole

17.5

85

132

10.5

40

Thread for lift M10×1.5

ø130

Oil filler port G1
164.5
4.5

160

（47.4）

Output shaft
Page→26

20

115

5

150

254

295

A

Servo motor

18 h7
Drain port G1/2

96

116

Positioning key

212

220
432

Motor cable

115

63

59

37.5

Oil level gauge

Air purge connection port
Rc1/8
Check valve for prevent
internal pressure rise

Drain port G1/2
View A21

Support table model MDS130

Specifications

Example：MDS130-R9

Specifications

Rotary joint
7MPa Hydraulic and air 9 port
Piping port ofrotary joint

Rotary joint

of 13
er ft
et shaam t
Di utpuoRotary joint
Hydraulic oil and Air

R ：Built-in：G thread

9 ：9 port：None

C ：Rc thread

3 ：3 port

0

MDS130Center height

Rotary joint
Cutting ﬂuid 1 port

● For the hydraulic connection, Rc port is applied, a sealing tape is normally used for the piping but bits of thetable may cause internal leakage of a rotary joint or malfunction of the actuator. Model MDF introduces G port
which accepts the fittings with bonded seal being composed with a metal ring and rubber thereby no bits ordebris that causes internal leakgae is produced when piping.

Mode

MDS130-R□9

MDS130-R□3

MDS130

Hydraulic and air 9 port
Cutting fluid 1 port

Hydraulic and air 3 port
Cutting fluid 1 port

No rotary joint

17

14

12

Mass

kg

Output shaft diameter

mm

ø130

mm
Center height
Inner diameter of output shaft mm(mouth)Lubrication

120

Operating temperature

ø30H7
Grease lubrication
0‒40℃

Specifications of rotary joint
Ports

Number of circuits
HydraulicandairWorking fluid

Hydraulic and air 3 port
Cutting fluid 1 port

9 ports

3 ports

General mineral based hydraulic oil (ISO-VG32 equivalent) / Air

Max. working pressure MPa
Piping port
Number of circuits

Cutting
fluid

Hydraulic and air 9 port
Cutting fluid 1 port

7
G1/8（Rc1/8 for Rc threaded type）
1 circuit (in the center)Max. working pressure MPa
Piping port

0.3
G1/8（Rc1/8 for Rc threaded type）● In case that air is used for rotary joint, use of lubricator is recommendable.
● In case that working fluid is used, leakage of oil film to the adjacent circuit occurs inside the rotary joint. Whenboth the working fluid and air are used, provide a drain circuit between the hydraulic circuit and air circuit. (Incase of the air circuit which allows leakage of oil film, there is no need to provide a drain circuit.)● Supply the cutting fluid which is filtered to connecting port of cutting fluid.

22

Rotary joint

Hydraulic and air 9 port

Cutting fluid 1 port

model MDS130-R(C)9

104

104
ø110

18

67

64.5

11

4-ø11 Hole

ø130

Thread for lift M8×1.25

163.5
Output shaft

6

180

79

（3.8）
78.5

Page→26

210

Grease nipple

5

23

120

A

18 h7

7

86.5

230
Positioning key

Primary connection port
Page→26

View A
23

Rotary joint

Hydraulic and air 3 port

Cutting fluid 1 port（C）3model MDS130-R

104

104
ø110

18

67

64.5

11

4-ø11 Hole

ø130

Thread for lift M8×1.25

106.5
Output shaft

6

180

79

（3.8）

21.5

Page→27

210

Grease nipple

5

23

120

A

18 h7

7

230
Positioning key

Primary connection port
Page→27

View A24

86.5

No rotary joint
model MDS130

104

104
4-ø11 Hole

18

67

64.5

11

ø100

ø130

Thread for lift M8×1.25

93.5
Output shaft

6

180

79

8.5

Page→26

210

Grease nipple

5

23

120

A

18 h7

7

86.5

230
Positioning key

View A
25

Rotary joint

9 portTable face Dimensions（C）F□／ model MDS130-R（C）9model MDF130AR-R

Output shaft
40°
P.C

20°

20°

Primary connection port
40°

Cutting ﬂuid
Primary connection port G1/8
(Rc1/8 for Rc threaded type)

.D

.5

20°

7

①
Ⓐ

⑨
Ⓑ

②
Ⓙ

⑧Ⓒ

Ⓗ③

⑦Ⓓ

Ⓖ④
Ⓔ
⑥

10
D. 1
P.C.
P.C.D
. 74
2-ø8 H7 depth 12(reference pin hole)
Only MDF
Port number
MDF130 : ①〜⑨
MDS130 : Ⓐ〜Ⓙ

Ⓕ
⑤

20°

① ⑨
② ⒶⒷ ⑧
Ⓒ
Ⓙ
Ⓓ⑦
③Ⓗ
ⒼⒻⒺ
⑥
④
⑤

18-M8×1.25 depth 16

45 ±0.02

Rotary joint (Hydraulic and air)Primary connection port 9-G1/8

45 ±0.02(Rc1/8 for Rc threaded type)ø7.3

Secondary connectoin port (9 ports)

ø3.4

ø9

ø30 H7

Cutting ﬂuid connection port

C1
O-ring P4
5

26

1.5

Rotary joint

3 portTable face Dimensions（C）3model MDS130-R

Output shaft

20°

20°

.D

Cutting ﬂuid
Primary connection port G1/8
(Rc1/8 for Rc threaded type)

.5

0

0°

. 11

P.C.D
.

2-ø8 H7 depth 12(reference pin hole)
Only MDF

Ⓐ

Ⓖ

Ⓖ

Ⓓ

74

0°

D
P.C.

12

Ⓐ

12

0°

12

12
0°

7

Ⓓ

Port number
MDS130 : Ⓐ,Ⓓ,Ⓖ

18-M8×1.25 depth 16

45 ±0.02

Rotary joint (Hydraulic and air)Primary connection port 3-G1/8

45 ±0.02(Rc1/8 for Rc threaded type)

Secondary connectoin port (3 ports)

ø7.3

ø9

ø30 H7

Cutting ﬂuid connection port

ø3.4

P.C

Primary connection port

C1
O-ring P4
5

1.5

27

MDF130 Rotary joint

G port piping example

Stud elbow & Parallel threaded adapter

G port pipe fitting（212）

Parallel threaded adapter
8FKHB06010

G port pipe fitting

NE type steel pipe fitting
8FKLA06000

Stud elbow
8FKMB06010

Parallel threaded connector（235）
G port pipe fitting

Parallel threaded connector
8FKCO06010

28

MDF130 Rotary joint

G port piping example

Manifold block

Manifold blocks can reduce projections on piping materials.
Contact us for the details.

Manifold block

184.5

29

G port pipe fitting

model 8FK□

Parallel threaded connector

8FKCO06010

model

Bonded seal

ø17

17.5

ø4

ø17

Bonded seal

Width across flat17
17.5

ø4

Width across ﬂat14

Outer diameter of steel pipe ø8Outer diameterof steel pipe ø6

Outer diameter of steel pipe ø6

8FKCO08010

SleeveG 1/8

6

SleeveWidth across flat 14

32.5

Outer diameterof steel pipe ø8

model

6

G 1/8

32.5

Width across flat 17

Stud elbow

model

8FKMB06010

Outer diameter of steel pipe ø6

8

13

14

Width across flat 17

Bonded seal
ø4
Outer diameter of steel pipe ø6

33.5

17.5

ø4

ø17

G 1/8

Width across flat 14
Sleeve● Use a bonded seal to seal flange surface where a fitting will be fitted (do not use O-ring type G thread fitting).
● Use the sleeve KKO from Ihara Science Corporation for the sleeve of fitting.

30

G port pipe fitting

model 8FK□

Parallel threaded adapter

model

8FKHB06010

Parallel threaded adapter

NE type steel pipe fitting

model 8FKHB06010

Use NE bite type tube ﬁtting from Ihara
Science Corporation on opposite side.

ø3

ø17

Width across flat14

Ｇ1/8
Bonded seal

6

9

21

Outer diameter of steel pipe ø6

Bonded seal (Spare parts)

model

8FKP-C-010

The standard specification is NBR for the rubber material and SPCC (cold rolled
steel plate) for the metal ring.
Bonded seals are supplied with the fittings and are available for sale soley asspare parts.

Metal ring
2

A

17

Rubber

9.9

A

A-A

31

MDF130 Rotary joint

Rc port pipe fitting example

Stud elbow

Rc port pipe fitting

Stud elbow（238）

Parallel threaded connector（237）
Rc port pipe fitting

Parallel threaded connector

Difference between Rc port and G port
For the hydraulic connection, Rc port is applied, a sealing tape is normally used for the piping but bits of the table may causeinternal leakage of a rotary joint or malfunction of the actuator. Model MDF introduces G port which accepts the fittings withbonded seal being composed with a metal ring and rubber thereby no bits or debris that causes internal leakgae is produced
when piping.

32

Brake structure of worm gear

● Because the worm gear index table has backlash, a brake is required to maintain the table position. In
addition, the same can be said for DD motor driven tables since the DD motor has low holding torque.
The brake is generally a friction brake which is built by an air piston and a brake disc. Not only brakemechanism but also solenoid valve that controls the air flow and a sensor to detect the completion of
the braking are required. Friction brakes have the following problems.

● There is time loss of switching the solenoid valve when the brake
ON / OFF operation.
● When the friction surface wears, the brake torque decreases(the coefficient of friction decreases)● There is a risk of malfunction of the solenoid valve and operation
detection sensor.
● The brake may go down in high humidity areas where the factory air
environment is poor.

Brake discAir
PistonWorm shaft

Worm wheel

Worm gear index table

33

Itami, Hyogo, Japan 664-8502
TEL. 072-777-3333 FAX. 072-777-3520

CERTIFICATE OF APPROVAL ISO9001

PA-513E-10
2023. 04

Specifications are subject to change without prior notice.