VEX pro bearings tolerances

[asid61]

Originally Posted by AustinSchuh

I've found that to be inconsistent at giving you a good press that doesn't become loose later. YMMV.

We didn't put a lot of load on that bearing (failed prototype) for a long time, so I'll keep that in mind.
Mainly we did that because I failed at boring the hole correctly and made it ever-so-slightly too big for a press fit. It's usually better to just get it right the first time.

[roystur44]

In light gauge sheet metal for a press fit the Mfg engineer can make the hole a D shaped hole. The engineer adds a small .001 flat in to help keep the part retained. The Design engineer should draw the hole to the size of the bearing.

Annotate the CTF drawing that the hole is a press fit bearing hole.

Better to be under than over in size when it comes off the machine. Always consider heat, vibration, load, bearing length, etc in the design to retain the bearing.