Front-push passive collet chuck for compact precision clamping.
JP Front-Push Passive Collet Chuck
KORRETTO JP front-push passive collet chuck is used for round-part collet workholding where the clamping movement is applied through a front-push structure. It is suitable for compact fixtures, special machines and applications where the actuation system is provided by the machine or matched mechanism.

Product Overview
The JP front-push passive collet chuck is selected when the workholding layout requires a compact collet chuck and the clamping movement is applied from the front-push side. It is different from pull-back, hydraulic rotary and pneumatic high-speed collet chuck structures.
Selection should confirm workpiece diameter, collet type, front-push stroke, mounting dimensions, actuation method, fixture layout and required repeat accuracy.
Key Features
| Feature | Description |
|---|---|
| Front-push clamping structure | Clamping movement is applied through a front-push layout. |
| Passive collet chuck design | Used with a matched machine-side or external actuation mechanism. |
| Compact fixture use | Suitable for special fixtures and limited-space workholding. |
| Round-part clamping | Used for shafts, sleeves and cylindrical components. |
| Dedicated JP front-push structure | Designed for front-push passive collet clamping layouts. |
Technical Data and Dimensions
Use the drawing and parameter table to check the front-push stroke, collet range, mounting dimensions, actuation method and compatible fixture layout.

| Model | Mounting Interface Type | ΦA | ΦB | C | ΦD | E | ΦF(Max) | ΦG | H | I | L | Matching Collet | Max. Speed (r/min) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JP-30 | A2-4 | 110 | 82.6 | 14.25 | 63.513 | M40*1.5 | 30 | 85 | 3-M10 | 25 | 108 | 163E | 7000 |
| JP-30 | Straight Shank Type | 120 | 82.6 | 0 | 110 | M40*1.5 | 30 | 85 | 3-M10 | 23 | 100 | 163E | 7000 |
| JP-42 | A2-5 | 135 | 104.8 | 14.25 | 82.563 | M55*2 | 42 | 100 | 4-M10 | 28 | 127 | 173E | 6000 |
| JP-42 | Straight Shank Type | 155 | 104.8 | 0 | 140 | M55*2 | 42 | 100 | 4-M10 | 23 | 120.8 | 173E | 6000 |
| JP-60 | A2-6 | 170 | 133.4 | 14.25 | 106.375 | M75*2 | 60 | 130 | 4-M12 | 27 | 154 | 185E | 5000 |
| JP-60 | Straight Shank Type | 185 | 133.4 | 0 | 170 | M75*2 | 60 | 130 | 4-M12 | 27 | 146 | 185E | 5000 |
| JP-80 | A2-8 | 205 | 171.4 | 14.25 | 139.7 | M100*2 | 80 | 176.4 | 4-M16 | 35 | 156 | 193E | 4000 |
| JP-80 | Straight Shank Type | 220 | 171.4 | 0 | 200 | M100*2 | 80 | 176.4 | 4-M16 | 35 | 161 | 193E | 4000 |
FAQ
What is the JP front-push passive collet chuck used for?
It is used for compact collet workholding where the clamping movement is applied through a front-push structure.
How is this different from a general collet chuck?
This series is designed for front-push passive clamping layouts. Confirm the front-push stroke, mounting dimensions and matching actuation method before selection.
Is this the same as a pull-back collet chuck?
No. Front-push and pull-back structures apply clamping movement in different ways and should be selected according to the fixture layout.
What information is needed for selection?
Provide the workpiece drawing, clamping diameter, collet type, front-push stroke, mounting dimensions, actuation method and accuracy requirement.
When should I choose a passive front-push collet chuck?
Choose it when the machine or fixture provides the actuation movement and the layout requires a compact front-push collet chuck structure.