JA4-60 Diaphragm Chuck Grinding Application
This portrait clip shows the grinding spindle, chuck and wheel in one view. The JA4-60 holds the part at the front of the spindle. The wheel works close to that gripping position. The view helps explain the mounting space and wheel approach inside the machine.
How the grip works
The built-in pneumatic cylinder flexes a metal diaphragm. Its gripping segments move with that small elastic deflection. The grip does not depend on conventional jaws travelling along long slideways. A replaceable diaphragm collet is finished to match the part. External gripping closes onto the outside diameter. Internal gripping expands against the bore.
Choose the gripping direction from the machining datum. Gripping inside a bore leaves the outside diameter accessible. For a slender shaft or thin wall, set the contact length, overhang and clamping force together. After mounting, check the chuck datum first, then the gripped part.
What to check in this setup
- Match the spindle flange and chuck interface.
- Leave room for wheel dressing and replacement.
- Keep air lines clear of moving parts.