JA5-70 Internal Gripping Inspection
A sleeve is gripped from the bore and checked on its outside diameter. The video shows the JA5-70 internal-gripping arrangement and the indicator position near the end face. The outside surface has no external jaws in the way.
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
- Account for the bore chamfer in the contact length.
- Define the part end-face location.
- Set clamping force for the wall thickness.