Cannot choose FR5 tooling from the gearbox housing mass alone

One supplier has a drawing, but the housing is shown at the wrist rather than at the end of the proposed fingers. Other offer has no assembly drawing yet.

Then the first drawing doesn't represent the held load. Ask them to put the actual housing at its intended contacts, with the adapter and fittings included.

Is either supplier responsible for the adapter, or is that left to your installer?

Both originally left it to us. Our integrator has now supplied the intended adapter drawing so the offers can use the same arrangement.

Thank you, that closes one easy source of variation. Make sure the fittings are similarly identified; a later elbow change can alter the space the assessed tool occupies.

Did the corrected held-housing drawing arrive?

Yes. First supplier corrected the position and added the adapter and fittings. Their original fingers need redesign for the assessed duty, according to their engineer. Second supplier is still working on its complete model.

That is a real consequence of the missing information. Are they retaining the same gripping surfaces on the housing?

No. Proposed shorter fingers use another permitted contact area. Inspection is checking that area against the finish requirement, and the integrator is checking the new approach.

Keep that as a new candidate with its own holding and release assessment. Shorter fingers might help the load case while introducing a different contact or access problem.

Has the second offer become comparable yet?

Second supplier returned the full model and assessment. It retains the original contact area with a different finger body. Both now include the adapter, fittings and our proposed duty. Prices changed on both.

What did inspection say about the first supplier's alternative contact?

Not acceptable on that finish. We rejected that candidate rather than asking the operator to inspect around marks we'd deliberately introduced. Second candidate's sample work is complete with acceptable appearance.

And the exit from the nest? Still interested in that bit.

Demonstrated with the represented receiving nest, including opening and withdrawal. Full range of our identified sample housings included. No contact with the nest during the assessed sequence.

That gives purchasing a specific offered arrangement to select. Retain the assembly revision with the assessment and quote so a later cheaper substitution does not inherit the result.