BT30 New Drill Mill Chucks

BT30 Power Lock Milling Chucks■Wide Range of Use■High gripping torque●Dimensional
Drawing

Various cutting tools including drill bits, tapping drills, reamers,and end mills can be chucked.

■High Gripping Force

Gripping torque was increased by making the tightening
collar thicker, and by strengthening tightening of theopening by modifying chuck ID with straight slit.

That is an advantage of double taper collets.

■Coolant can be used

■Applicable to high-pressure coolant

Coolant can be used, regardless of tool with orwithout coolant-thru hole.
Gauge line

Coolant of high pressure up to 7.0MPa is usable.
Taper■High Balancing
Grinding of the external surface ofthe holder secures a high balancing.

■High Rigidity・High Accuracy
High rigidity thanks to tightening collar end
holding system (duplex holding) and it ismanufactured with concentricity within 0.005mm
Unit: mm

Model

Gripping Capacity Nut Outside Diameter Total Length Length from the Length Adjustment ScrewdD
L1
Gauge Line L2
MaximumℓTaper

Applicable Collet Applicable(option)
Lock Nut●DimensionalDrawing

Grip DiameterdModel

Applicable Spanner Length Adjustment Coolant Seal
Weight (kg)Screw (option) Screw (option)(option)Nut Outside
Diameter D

Unit: mm
Total Length Length from theGauge Line L2
L1

Maximum ℓ

Taper

Applicable Collet Applicable Spanner(option)(option)Weight (kg)※Please use a tool of which shank diameter tolerance h7.
※Dimensions of tapered shank are in accordance with MAS4003-1982 BT Tapered shank.
※Straight collet and Spanner are not included in the above. They are separate accessories.

Straight Collets※Coolant seal screw cannot be used. ◆Dimensions of the Taper Shank are in accordance with MAS 4003-1982 BT Tapered Shank ◆Dimensions of Max. ｌ are those when length adjustment
bolt -APM type is used. ◆Collet, spanner, retention knob, coolant sealing back up screw, length adjustment bolt are not included the above. They are separate accessories.

Drill Mill Collets
Unit: mm
Model

Collet Gripping
Outside Diameter
Capacity dBore Size

LengthApplicable
Main Body

Hook Spanners●For normal use●For adjustment use●For coolant-thru toolCollet for chucking straightshank of small diameterCollet with adjustment bolt
which enable to set tool easily.

Suitable when using toolwith coolant-thru hole.

Model: FS55
Model

Bore SizeModelBore SizeModelBore Size

※ Please use a tool of which shank diameter tolerance h7.
※ Tool must be inserted into collet deep enough to secure retaining length.
※ Straight collet of size 6,8,10,12 are made to order.

BT30 Pencil Mill Chucks■Slim head

Hook Spanners

NDN Lock Nuts

Spanners with Torque Limiters●Dimensional Drawing

The slim head of the chuck will prevent unnecessary collision
with workpiece and will improve the operation efficiency.

■Method to secure a stable high precision
The pencil mill chuck draws collet straight without
screwing the draw-bar without the collet being twisted,which will keep the accuracy to be stable.

TaperGauge line

※ In addition to the standard collets, AA-class collets of higher runout accuracy are also available. When to order AA-class,
it must be specified accordingly.
※ 0.5〜1.0mm of chucking capacity.
※ When chucking an end-mill, please use the collet of which maximum capacity is equal to the dia. of the end-mill shank.
※ Special sizes of collets are also available.

■Runout within 5μ（Special specifications）
Super precision type guarantees the runout accuracy to bewithin 5μ at 25mm distance from the holder's head.

Unit: mmModel

Collet Gripping
Capacity dApplicable Collet Applicable Spanner(option)(option)TaperWeight (kg)※Collet, retention knob and spanner are not included in the above. They are separate accessories.
※Special sizes of pencil mill chucks are also available by special order.

Model

Applicable
Main Body

ApplicableColletModel

Applicable
Main Body

Applicable
Lock Nut

Model

Recommended
Torque (Nm)Applicable
Main Body

Applicable
Lock Nut

Pencil Mill Chucks

Single Head Spanners
Unit: mmModel※Torque-fixed type with recommendable torque.
※Hook spanners are separate accessories.
※Hook spanners are separate accessories.

Bore Size

Outside Diameter

LengthInside Screw Applicable
Main Body

ModelApplicable
Main BodyBT30 Floating Tap Holders

CNC Keyless Drill Chucks with BT30 Shank■The built-in radial float mechanism compensates the centering deviation, if any, between the spindle and the workpiece,
which will eventually secure the precise tapping work.

■Integration of shank and chuck madeits compact size and safety.
■Re-tightening with hook spanner
prevents loosening at an emergency
stopping.
■Run-out accuracy: smaller
than 0.05mm

Tap Holders

Tap Collets●Dimensional Drawing
Radial float●Dimensional Drawing

Taper

Taper

Unit: mm
Model

Gripping
Capacity

Taper

Applicable WeightSpanner(kg)

Taper

Applicable Weight
Spanner(kg)

Unit: mmModel

Tapping Capacity

Applicable Collet(option)

Taper

Applicable
Main Body

ModelSuper Keyless Drill Chucks with BT30 Shank■The sleeve-lock mechanism working
in reverse rotation.
■M16 tapping available.
■Run-out accuracy: smaller than0.05mm※ Collet, spanner and retention knob are not included in the above. They are separate accessories.

●Dimensional Drawing

BT30 Face Mill Arbors

Taper●Dimensional Drawing
Unit: mm
Model

Keyless Drill Chucks

Gauge line

Taper

Unit: mm
Model

Taper

Weight (kg)(Hexagon socket head cap screw
M10 × 35ℓ)

■World highest precision, manufactured
with integration of our production
technology and quality control.
■Run-out accuracy: smaller than0.05mm<G o l d> Less than 0.03mm<Silver> Less than 0.05mm※ Special sizes are also available.
※ Retention knob is a separate accessory.

Ultraprecise Type

Precise Type

LC3-J0 gold

LC3-J0 silver

LC3-J1 gold

LC3-J1 silver

LC6.5 gold

LC6.5 silver

LC8 gold

LC8 silver

LC10 gold

LC10 silver

LC13 gold

LC13 silver

LC16 gold

LC16 silver

GrippingCapacityTaper

Unit: mmLength Weight
Outside Length(closed (openDiameter claws) claws) (kg)Super Keyless Dream Chucks

BT30 Jacobs Taper Arbors■The sleeve-lock mechanism
working in reverse rotation.
■M16 tapping available.
■Run-out accuracy: smaller
than 0.05mm●Dimensional Drawing

Taper●Dimensional Drawing

Gauge line

■These arbors are manufactured by using prototype of thetaper gage in high quality control to achieve taper contact
better than 85%、thus, enabling to assure the superior
endurance and the high accuracy

Gripping
Capacity

Unit: mm
Model

Jacobs Taper

Taper

Unit: mm

Weight (kg)ModelGripping
Capacity

Applicable Weight
Taper
Spanner(kg)