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Unread 09-01-2015, 07:47
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MechE
AKA: Craig Rochester
FTC #8470 (Team Technado)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2012
Location: Boston
Posts: 317
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Re: [FTC]: Wormgear and set screws

Quote:
Originally Posted by Sasha View Post
We were not sure how efficient it is and wanted to explore other options.
Thread locker is an excellent product for preventing fasteners from loosening, but has limits. If your set screw is loosening because of wear on the mating surface (e.g.: set screw digs into a round shaft and make a grove) thread locker will not solve the slipping problem. It doesn't take much of a flat on the shaft to prevent slipping. We always use thread locker on setscrews.

Also, have you seen the different types of setscrews? See the McMaster page:

http://www.mcmaster.com/#set-screws/=ve2e3b

I like the "extended dog" type with a shallow hole drilled on the shaft. It's bulletproof and on assembly, you can easily feel and see that the setscrew is seated; you can see by the depth of the tightened setscrew that it is engaged correctly.

Last edited by DavisDad : 09-01-2015 at 07:51.
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