KFHP
Precision power chucks for large workpieces
"The power chuck with the highest precision for large workpieces"
he KFHP power chucks have been specially developed for cylindrical grinding machines and are perfectly suited for grinding large components. Despite the large radial jaw stroke of 4 mm, the overall height is very low so that the machining space of your cylindrical grinding machine can be used optimally. The chucks are sealed against the ingress of grinding debris and are filled with oil for lubrication to ensure trouble-free operation over an extended period. This design makes them virtually maintenance-free. The KFHP power chucks are also equipped with a volume compensation, which prevents unnecessary oil loss and the ingress of grinding fluids.
Technical data
3KFHP
| Name | Item | ø Size (mm) | Hight (mm) | ø Passage (mm) | Clamping Force (kN) | Max Speed (1/min) | Stroke per Jaw (mm) | Weight (kg) |
| 3KFHP 315 | SX1013257 | 315 | 66 | 48 | 18 | 500 | 4.0 | 30.5 |
| 3KFHP 315 | SX1013256 | 355 | 66 | 88 | 18 | 500 | 4.0 | 30.5 |
| 3KFHP 315 | SX1013252 | 400 | 66 | 120 | 18 | 500 | 4.0 | 30.5 |
Functions & Field of Applications
- Perfectly suited for large workpieces
- Clamping on the external and internal diameter
- Large through-bore clearance
- Power chuck actuated by pneumatic force clamping cylinder
- Ideal chuck for all cylindrical grinding machines
Advantages
- High precision ≤ 0.002 mm
- Hermetically sealed and permanently lubricated to ensure low maintenance
- Suitable for use on cylindrical grinding machines
- Extremely low design height
- Precision interface between the base and top jaws
- Does not require regrinding of the clamping section after a change of jaws
- Jaws are interchangeable between chucks of the same design
- Standard accessories 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 VKCPH are actuated utilizing 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."
3KFHP 315
Part of CVT gearbox:
Clamping on OD diameter
- Grinding of the face and ID diameters
- Must be free of deformation caused by clamping force
- High concentricity and axial runout accuracy
3KFHP 400
Gear part:
Clamping of gears on pitch circle (approx. ø250)
- Grinding of the bore
- High concentricity required
- The workpiece is first inserted into a needle cage, and subsequently, this assembly is clamped in the chuck
Triton
Precision power chuck for soft and hard-turning operations
PZLHM
Compressed air – Hollow clamping cylinders
KCHP / VKCHP
Precision power chuck for cylindrical grinding machines