Collet Hand
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Collet Hand®.

Collet Hand

Light-weight, compact, and high-precision hand with a built-in air cylinder that the know-how as a collet chuck manufacturer is integraded 

  • High precision hand equipped with a collet chuck (repeatability not exceeding ±0.005mm)
  • The versatile 3 lines: Standard (outer diameter clamping), inner diameter grip, and overgrip models
  • The collet chuck can be changed to support various workpiece shapes
  • Lightweight and compact with a built-in air cylinder mechanism
  • The gripping force can be controled by adjusting air pressure
  • Round, square, and robot-compatible types are available

Collet Hand Structure

1. Built-in air cylinder mechanism

The gripping force can be controled by adjusting air pressure.

2. A sensor

A sensor that detects the sleeve position can be installed. *Square semsor model

3. Collet chuck

The collet chuck achieves a high gripping force with a repeatability of ±0.005 mm. Various workpieces can be handled by changing the collet chuck.

4. Coil spring

The clamping accuracy in the thrust direction increases by restricting the collet chuck movement.

Japanese Patent No. 7051152 Handling device
U.S. Patent No. 11,440,204

Collet Hand Selection

You can select the collet hand best suited to your environment based on the workpiece gripping method/shape and style of mounting device.
Collet chucks are sold separately.

Click here to download catalogsClick here to download CAD data

Standard Collet Hand

Repeatability ＜±0.005mm
 This collet hand grips the outer diameter of a workpiece.
The hollow design allows it to handle long workpieces (except for the rotary version).
Used for grinding, gluing, welding, conveying, assembling, caulking, etc.

Round type

For custom machine

For gripping materials and securing tools during machining

Square type

For orthogonal robot

For handling small or odd-shaped parts

Robot type

For Cobot/Articulated robot

Easy installation on industrial robots.
For assembly and transfer operations.

Collet chuck is sold separately.

Inner-grip Collet Hand

Repeatability ＜±0.015mm
 This collet hand grips the inside diameter of the workpiece.
Ideal for workpieces that cannot be gripped on the outside diameter.
Adjustable clamping force can be adjusted to accommodate thin pipe materials, etc.

Round type

For custom machine

For welding and adhering workpieces that cannot be gripped by the outer surface

Square type

For orthogonal robot

For conveying and inspecting workpieces that cannot be grasped by the outer surface

Robot type

For Cobot/Articulated robot

Easy installation on industrial robots.
For assembly and transfer operations.

Collet chuck is sold separately.

Over-grip Collet Hand

For handling spherical workpieces and stepped workpieces
 Collet chuck opening approximately 20 times larger
Accurate clamping of spherical or stepped workpieces
Claws can be made to match the shape of the workpiece
Claws can be easily replaced

  • Built-in air cylinder mechanism
  • Wide-open
  • Flexible structure
  • Over-grip hand

Gripping a spherical workpiece

Gripping a stepped workpiece

Round type

For custom machine

For welding and adhering stepped and spherical workpieces

Square type

For orthogonal robot

For handling stepped and spherical workpieces

Robot type

For Cobot/Articulated robot

Easy installation on industrial robots.
For assembly and transfer operations.

Collet chuck is sold separately.

Standard Collet Hand / Round Type

 Model φD  Inner Diameter φD L1 L2 L3 Approximate  Weight Approximate Grip Force Download
At 0.3MPa At 0.5MPa PDF DXF STEP
RCH30φ0.5 to φ5 mm□1-43050540160g100N250N
RCH40φ1 to φ10 mm□2-74075565350g250N450N
RCH60φ3 to φ20 mm□3-1360907751,000g300N700N

Standard Collet Hand / Square Type

 Model φD  Inner Diameter H1 H2 W1 L1 L2 L3 P1 P2
SCH30φ0.5 to φ5 mm□1-4301545502593232
SCH40φ1 to φ10 mm□2-74020557535154045
SCH55φ3 to φ20 mm□3-135527.5709040155560
 Model A B C Approximate  Weight Approximate Grip Force Download
At 0.3MPa At 0.5MPa PDF DXF STEP
SCH30φ5 mm in diameter and 6 mm in depthφ4.5, 8 cbore, 4.5 deepM6, 8 deep250g100N250N
SCH40φ6, 8 deepφ5.5, 10 cbore, 5.5 deepM8, 8 deep550g250N450N
SCH55φ6, 8 deepφ5.5, 10 cbore, 5.5 deepM8, 12 deep1,250g300N700N

Inner-grip Collet Hand / Round Type

 Model φD  Inner Diameter φD L1 L2 L3 Approximate  Weight Approximate Grip Force Download
At 0.3MPa At 0.5MPa PDF DXF STEP
ROH30φ3 to φ15 mm30133050120g100N200N
ROH40φ10 to φ20 mm 40154070350g150N400N
ROH50φ15 to φ30 mm 50205085850g200N600N

Inner Grip Collet Hand Square Type

 Model φD  Inner Diameter H1 H2 W1 L1 L2 L3 P1 P2
SOH30φ3 to φ15 mm3015454526163220
SOH40φ10 to φ20 mm4020556032174030
SOH50φ15 to φ30 mm5025657037175040
 Model A B C Approximate  Weight Approximate Grip Force Download
At 0.3MPa At 0.5MPa PDF DXF STEP
SOH30φ5 mm in diameter and 6 mm in depthφ4.5, Counterbore 8, Depth 4.5M6 DEEP SA 8200g100N200N
SOH40φ6 deep sa 8ø5.5, Counterbore 10, Depth 5.5M8 DEEP SA 12400g150N400N
SOH50φ6 deep sa 8ø5.5, Counterbore 10, Depth 5.5M8 DEEP SA 121,100g200N600N
Collet Hand＼Collet Hand＼" is a registered trademark of Daiya Seiki Seisakujo, Inc. (No. 6313940)

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