Two-Jaw Chuck

Smar t S eri es

T w o - Jaw Chuck
Mode lKSC

Powered by Third-Party Source: Smart Series

Spring Lock and External Force to Release
Exclusively for Clamping the Closing SideFeatures

Holds and Centers Workpiece※ Exclusively designed for closing side only. Not capable of clamping the opening side by external force.

Released (Opened) by External Force

Locked (Clamped) by Spring

Lever(Prepared by Customer)

Workpiece

SliderPlunger
External Force

Push the plunger to release.

Workpiece is clamped by spring force.
Plunger is at a free state.

High AccuracyEnables high repeatability and is suitable for high-accuracy application.
Repeatability (Slider Direction)：±0.01 mm

Easy to Machine the Mounting Surface of Lever
Only slot for locating pin and bolt hole need to be machined for mounting the lever.
Complicated serration machining is not required.
1Model No.
Indication

ActionDescription

External
Dimensions

Specifications

Cautions

Action Description※ This is a simplified drawing. Actual components are different.
Lever(Prepared by Customer)

Lock Side
Stroke End

Plunger

Clamp Spring

6Slider

82Workpiece

Release Side
Stroke End

Releasing Force
60 ~ 200N

Closed State

Opened State

Clamped State

Pushed by the clamp spring,
the plunger is at the lock sidestroke end.

Pushed by releasing force,the plunger is at the releaseside stroke end.

Workpiece is clamped by theclamp spring.

※ Clamping force is not exerted
in a closed state.

※ Using outside the range of
releasing force may result in
failure to open, and damageon the product.

※ Determine a lever shape andclamping point in considerationof workpiece loading/unloading.

Application Example

For Centering ViseFor End of Arm Tooling2Smart Series

Two-Jaw Chuckm o d e l K SC

Model No. Indication

KSC050 0
1

1 Design No.
0 ： Revision Number

Specifications
Model No.

KSC0500

Clamping Force ※1N

About 50

Releasing

Minimum

N60ForceMaximum

N200

Slider Stroke (One Side)

mm

2.5

Max. Clamping Heightmm

30

Repeatability (Slider Direction) ※2

mm

±0.01

Operating Temperature℃

0 ~ 120

Weightg

About 110

Notes :
※1. It shows the total value of clamping force on both sides.
※2. It shows the repeatability under the same condition (without a load).

Slider Stroke(One Side)

50/2=25(N) ※1

50/2=25(N) ※1

Clamping Height3Action
Description

Model No.
Indication

ExternalDimensions

Specifications

Cautions

External Dimensions※ This drawing shows the opened (released) state of KSC0500.

Slider

1.54.5

2.5

24183

3.6

R38.4

7.2

8.4

3

Hatched Area :Lever Mounting Reference Surface

10.5

M3×0.5 Thread Depth 661240

124-φ3.4 ※264
1.0
When Opened：60 +- 0.4※10.3
When Closed ：55 +- 0.9

Lever(Prepared by Customer)

Slider Stroke
2.52 10(φ10）

630 ±0.022-φ3.4
Spot Facingφ6Depth 311528Positioning Hole(Back Side)

62φ10※21511245(5)

2133

1.5

2-φ3 Parallel Pin (Included)

When Opened
When Closed

Releasing Force32-φ3 + 0.03
Depth 5022

20 ±0.02

4Positioning Hole
2-φ3 + 0.03
Depth 50C0.2〜0.4

22Notes :※1. Please determine a clamping point in consideration of dimensional tolerances.
※2. Mounting direction of the main body can be selected from either the side or the bottom.
1. Mounting bolts are not provided with the product. Please prepare them according tothe mounting position. (Refer to P.5 ʻInstallation of Two-Jaw Chuckʼ .)2. This product is locked by spring and released by releasing force.
3. Install levers on the top of the slider when in use.

（R1.5）

3

φ3.4
7

3H7 + 0.010
010

Clamping Point
30 or less

3921

Lever Design Dimensions

4

Smart Series

Two-Jaw Chuckm o d e l K SC

Cautions● Notes for Design● Installation Notes

1) Check Speciﬁcations

1) Installation of the Lever● This product is locked by the built-in spring and released by● Use hexagonal socket bolts and tighten them with the torqueapplying external force. Apply a force in the range shown inshown in the list below. Installation failure causes the deformation

the speciﬁcations (refer to P.3 Releasing Force) to release.

of lever and decrease of clamping force.

Applying excessive load on the cylinder leads to deformationand galling.
● Please use each product according to the speciﬁcations.

Model No.

Mounting Bolt Size

Tightening Torque (N･m)

KSC0500

M3×0.5

1.3● The lever should be extended to the projection at the top of2) About Levers

the slider.

● Install levers on the top surface of the slider according to theshape of the workpiece to be clamped.

Lever
SliderProjection3) Clamp a workpiece at the center of the slider.
● This product is not applicable for oﬀset clamping.

GapNo Gap

LeverWorkpiece● Hold the lever when mounting and removing to avoid applying
torque directly to the slider.
Lever

CenterOﬀset

Clamping at

Clamping atthe center position.

the oﬀset position.

4) Do Not Clamp in Opening Direction● This product is designed for clamping the closing side only andincapable of clamping the opening side by external force.
2) Installation of Two-Jaw Chuck● Use hexagonal socket bolts in multiple bolt holes according
to the mounting direction and tighten them with the torquein the list below.

5) Operating Environment
This product has no function that prevents foreign substances.
Do not use under environment with coolant and cutting chips.
6) Mounting Direction of Main Body
Mounting direction of the main body can be selected from either
the side or the bottom.
Please prepare the number of mounting bolts according to themounting direction.

5

Mounting from the bottom

Mounting from the side

Number of Mounting Bolts：4

Number of Mounting Bolts：2

Model No.

Mounting Bolt Size

Tightening Torque (N･m)

KSC0500

M3×0.5

1.3

ActionDescription

Model No.
Indication

Specifications

ExternalDimensions

Cautions● Notes on Handling● Maintenance and Inspection1) It should be operated by qualiﬁed personnel.

1) Removal of the Product and Shut-oﬀ of Pressure Source● Machines and devices should be operated and maintained● Before the product is removed, make sure that safety devices andby qualiﬁed personnel.

preventive devices are in place. Shut oﬀ the pressure and powersource, and make sure no external force is applied to the product.

2) Do not operate or remove the product unless the safety
protocols are ensured.

● Make sure there is no trouble/issue in the bolts and respective
parts before restarting.

① Machines and devices can only be inspected or preparedwhen it is conﬁrmed that the safety devices are in place.
② Before the product is removed, make sure that the above-mentioned
safety devices are in place. Shut oﬀ the pressure and power source,2) Regularly clean the clamping part.
● If it is used when the lever and the surface of moving parts arecontaminated with dirt, it may lead to malfunctioning.

and make sure no external force is applied to the product.
③ After stopping the product, do not remove until the temperaturedrops.
④ Make sure there is no trouble/issue in the bolts and respective
parts before restarting a machine or device.
3) Do not touch a cylinder or workpiece while it is working.
● Otherwise, your hands may be injured.
3) Regularly tighten mounting bolts to ensure proper use.
4) Make sure there is a smooth action without an irregular noise.
● Especially when it is restarted after left unused for a long period,
make sure it can be operated correctly.
5) The product should be stored in the cool and dark place
4) Do not disassemble or modify.

without direct sunshine or moisture.

● Contains a powerful spring which is dangerous.
If the product is taken apart or modiﬁed, the warranty will be6) Please contact us for overhaul and repair.

voided even within the warranty period.

● Contains a powerful spring which is dangerous.

● Warranty1) Warranty Period● The product warranty period is 18 months from shipment fromour factory or 12 months from initial use, whichever is earlier.
2) Warranty Scope● If the product is damaged or malfunctions during the warranty
period due to faulty design, materials or workmanship, we will
replace or repair the defective part at our expense.
Defects or failures caused by the following are not covered.
① If the stipulated maintenance and inspection are not carried out.
② Failure caused by the use of the non-conﬁrming state at the userʼs
discretion.
③ If it is used or operated in an inappropriate way by the operator.
(Including damage caused by the misconduct of the third party.)④ If the defect is caused by reasons other than our responsibility.
⑤ If repair or modiﬁcations are carried out by anyone other than Kosmek,
or without our approval and conﬁrmation, it will void warranty.
⑥ Other caused by natural disasters or calamities not attributableto our company.
⑦ Parts or replacement expenses due to parts consumption anddeterioration.
(Such as rubber, plastic, seal material and some electric components.)
Damages excluding from direct result of a product defect shall be
excluded from the warranty

6