Quote:
Originally Posted by Cory
we had a heck of a time keeping our pinions in place this year. Due to having 2 gears on one CIM shaft we had no room to use retaining clips like we usually do and we had to rely on a setscrew to keep the gear from moving. Even with 2 set screws 90* from each other the gears would slide out and eventually maul themselves on the adjacent gear. We had to resort to green loctiting them, which didn't work well either when we didn't let it set for 24 hours.
Furthermore the only way to release the loctite is heat. I melted a bit off one of our Delrin sideplates the other day trying to break a stubborn one free.
We hate setscrews and figured this was probably one application where they might be OK. Lesson learned-never again will we rely on them.
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We've had problems using M3 setscrews to hold a gear to the CIM shaft (mainly because the small allen key prevented us from tightening the screw properly) but switching to M4 setscrews completely solved our problem (both last year with a high torque, two-speed gearbox and this year with a single, high speed gearbox).