Robotic Arms

[Feroz1325]

Really a turreted arm is overkill and your central bearing/bushing assembly will be prone to failure due to high loading (not to mention large expense). Trading the complexity of a rotating arm for a faster, simpler, better implemented fixed arm will usually result in a more competitive robot. The most common types of arms that were effective in 2011 were:

Telescopic arm with 1 rotating stage (2-bar):
610 2011/2007 - (https://www.youtube.com/watch?v=yRrT9gEgT-Q, CAD on FRC designs)
233 2001/2007 - (https://www.youtube.com/watch?v=YTs3b2w_GSw)

4 bar style arms:
148 2011/2007 - (www.youtube.com/watch?v=XECmOwmYiu8, CAD on FRC-Designs)

2 rotating stage arms(2x 2-bar):
2056 2011 - (https://www.youtube.com/watch?v=GJ1Op8XLsao)


Should you want to continue to pursue the rotating arm assembly you may want to ask 118 about their rotating elevator assembly (https://www.youtube.com/watch?v=h3l6Xqts4to) though arms and elevators will induce different kinds of loads they may be able to help you with bearing selection. Best of luck!