Hello. I've got a problem with workholding at work. The parts we make are mostly hydraulic chucks. That means thin walls that we are not allowed to clamp on due to deformation. Our solution so far has been soft jaws in a three-jaw chuck clamping on the OD. This got two problems. First problem is it's just not enough clamping force meaning the parts fly all over the place even with reduced feeds and speeds. Second problem is clearance, meaning we have to do things in multiple setups sometimes, which adds a lot of time.

So the question is, is it possible to use ID expansion clamps where you only have about 6mm of surface to clamp on? Keeping in mind the inside diameter of the parts ranges anywhere from 20mm to 120mm. If so, what type of clamp should I use? Any brands to look for or avoid?

I've marked the part in green where we are allowed to clamp. Obviously, this is not the real drawing because... you know.