316L g6/h7 fit

[SMOKES]

Part are in tolerance but they need a little force to fit and come apart it think it the stickyness of the material.
Do any have any rules for ISO fits when it come to 316L.

 

[pmarc]

Two questions:
1. Is it simple mate of two locationally unconstrained features, like a cylinder and a hole, or there are locational tolerances that position these features to other features which also mate together in the assembly?
2. If this is ISO, your fit may always work only if the Envelope Principle is defined (circled E next to dimension). Is it there? Without it the straightness of the features measured lengthwise is not controlled at all, so despite both features being in tolerance (they satisfy two-point measurements) they may not match due to a bow or any other form error of similar nature.

Those questions apply two both of your threads.

 

[dgallup]

Don't forget that 316L is prone to galling with very little pressure. This is particularly bad if both parts are 316L. It's much better if you can change one of the parts.

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[Walterke]

First of all, there's no such thing as a g6/h7 fit, unless you're trying to jam 2 shafts inside of each other.
I'll assume you're talking about a g6/H7 fit.
What's the length of the parts that need to fit. Is it just one shaft and one hole? Or is it a series of holes?
g6/H7 isn't a very wide fit so if you don't start perfectly aligned it might take "some force" as you say to assemble them.
Define "some force". Can you use your hands or do you need a hammer? Soft hits or swinging hard? What size shaft are we talking about?

Have you tried adding a lubricant? If you can't slide them in when they're lubricated something's probably wrong.

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