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Unread 29-04-2015, 16:09
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Paul Copioli Paul Copioli is offline
President, VEX Robotics, Inc.
FRC #3310 (Black Hawk Robotics)
Team Role: Engineer
 
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Re: VEX Pro Parts Feedback, 2015

Quote:
Originally Posted by mman1506 View Post
I wonder if a dual ball bearing supported VP output option would be useful for teams. Pretty much every VP failure I've seen is from excessive combined loads and VPs are just one of those things that teams tend to abuse. Most industrial planetaries of similar size like the Neugart PLE series are dual ball-bearing supported from the factory.
They are dual 15mm ID deep groove ball bearing supported on the output shaft.

The weak spot in the VP output is the snap ring holding the output shaft in place. For most loading conditions this usually doesn't matter, but with pull out loads generated by lead screws the snap ring can fail due to pull out.

The Industrial versions of these type of gearboxes all have the last stage of the planet carrier integrated into the output shaft so they do not have this same failure mode.
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In full disclosure I am the President of VEX Robotics, a division of Innovation First International.