KCHP / VKCHP
Precision power chuck for cylindrical grinding machines
"The favorite micrometer precision chuck of the machine operators"
The KCHP/VKCHP precision power chucks have been specifically designed for cylindrical grinding machines. The chucks are hermetically sealed against contamination and are oil-filled for permanent lubrication to ensure a flawless long-term operation. These design features render the chucks nearly maintenance-free. All the precision power chucks of the generation KCHP/VKCHP now also feature volume compensation to prevent unwanted oil loss or grinding fluid ingress.
Technical data
3KCHP – drawbar actuated
| Name | Item | ø Size (mm) | Height (mm) | ø Passage (mm) | Clamping force (kN) | Max speed (1/min) | Stroke per jaw (mm) | Weight (kg) |
| 3KCHP 110 | SX1018218 | 110 | 52 | 12 | 9 | 3000 | 1.25 | 2.2 |
| 3KCHP 130 | SX1018220 | 130 | 52 | 22 | 9 | 2500 | 1.5 | 2.9 |
| 3KCHP 160 | SX1018222 | 160 | 60 | 40 | 13 | 2250 | 2.5 | 4.9 |
| 3KCHP 200 | SX1018224 | 198 | 69 | 52 | 13 | 2000 | 2.5 | 7.4 |
| 3KCHP 250 | SX1018226 | 250 | 69 | 52 | 13 | 1500 | 2.5 | 12.8 |
3VKCHP – front-end actuated
| name | item | ø size (mm) | hight (mm) | ø passage (mm) | clamping force (kN) | max speed (1/min) | stroke per jaw (mm) | weight (kg) |
| 3VKCHP 110 | SX1018218 | 110 | 68.5 | 12 - Tiefe 36 | 2.5 | 2500 | 1.25 | 3.3 |
| 3VKCHP 130 | SX1018220 | 130 | 70 | 22 - Tiefe 34 | 4.0 | 2500 | 1.5 | 4.6 |
| 3VKCHP 160 | SX1018222 | 160 | 80 | 30 - Tiefe 40 | 6.5 | 2250 | 2.5 | 7.6 |
| 3VKCHP 200 | SX1018224 | 198 | 82 | 40 - Tiefe 40 | 10.0 | 2000 | 2.5 | 11.7 |
| 3VKCHP 250 | SX1018226 | 250 | 96 | 52 - Tiefe 45 | 12 | 1500 | 2.5 | 21.1 |
Functions & Field of Application
- OD and ID clamping
- Large central bore (through hole)
- Power chuck (KCHP) for actuation through a pneumatic cylinder
- Power chuck (VKCHP) pneumatically actuated on the front-end
- Ideal chuck for all cylindrical grinding machines
Advantages
- High precision ≤ 0.002 mm
- Low on maintenance
- Hermetically sealed and lubricated
- Suitable for grinding machines
- Lightweight design
- Precision interfaces between the base and top jaws
- Do not require regrinding of clamping position after a change of jaws
- Possible to interchange jaws between chucks of identical design
- Standard accessories are readily available
Changing jaws within micrometer tolerances is made easy!
All power chucks of the KCHP/VKCHP generation feature precision jig-ground locating bores for precision ball positioning. This ensures a quick clamping jaw change, independent of the chuck, without regrinding the jaws. This feature saves valuable time and increases productivity. Under optimal conditions, the jaws can be changed with an accuracy of ≤ 0.002 mm
Flexible options of actuation – all components relevant to the workpiece spindle from a single source
The KCHP power chucks are actuated through a drawbar, and a pneumatic cylinder mounted at the back of the machine spindle. The power chucks VKCHP are actuated through a rotating air tube through the spindle bore. For this reason, there is no need for mounting a pneumatic cylinder at the back of the headstock spindle. The necessary adaptation parts, such as spindle flanges or drawbars, are adapted to the respective machine spindle by our designers. SwissChuck offers you all components perfectly matched to each other. "You have the machine - we support you with a complete clamping system around the workpiece spindle."
3KCHP 110
Valve body:
External clamping with pull-back onto axial end-stop
- Grinding of the bore and the front face
- Stable clamping due to active pull-back to axial end-stop
- High accuracy of concentricity, tight tolerances on linear measurements
3KCHP 160
Fuel injection nozzle body:
Clamping of nozzle body with axial end-stop against the bore taper
- Grinding of the nozzle body's nose
- Axial end-stop on tungsten carbide pin
- Concentric clamping on OD
3KCHP 200
Ring gear with internal teeth:
Clamping in the pitch circle of the internal gear teeth
- Grinding of the face and the centering bores
- Low-deformation positioning within the pitch circle diameter
- Compensation utilizing pendulum jaws fitted with clamping pins for positioning within the pitch circle
3VKCHP 200
Distribution disk:
Internal clamping of distribution disks of hydraulic motors
- Grinding of the face and the concentric bore
- Low-deformation radial clamping in six bores
- Compensation through pendulum jaws
- Rigid axial end-stop for achieving maximum flatness on the face
PZLHM
Compressed air – Hollow clamping cylinders
TGC / FTGC
Tool chucks TGC for the automated production