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Unread 14-01-2015, 14:45
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Greg Needel Greg Needel is offline
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FRC #2848 (All-sparks)
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Re: REV V-groove Ball Bearing Weight

Quote:
Originally Posted by IndySam View Post
What about the bushings?
Quote:
Originally Posted by JamesBrown View Post
I spoke with both Greg and the people at AndyMark, bushings should be in today, and continue to trickle in over the next few days.

That being said AndyMark now lists them as back in stock on Saturday.



Yes the bushings should be received this week, but the qty is very limited. If you are looking for another solution and have a lathe, making them is not hard our drawing is on the web. http://www.revrobotics.com/wp-conten...1029-DR-00.pdf Just start with a piece of 1/2 hex. To make the eccentric hole take it to a drill press or mill.

Another option for construction is drilling out 3/8 bolts. The amount of center offset is not that critical as long as you have enough flexibility that it can engage. For the concentric side, just use a 3/8 bolt and drill out the mounting plate.


Lastly another option is to buy the ones from Bishop-Wisecarver. They are more expensive, but available right now if you need them. The REV v-groove bearing system is compatible with their "Size 2" system. You might need to add a washer or spacer to get the alignment correct, but they will work.

Eccentric bushing - BWC Part number - BX2SS Price - 8.54

Concentric Bushing - BWC part number - B2SS Price - 4.18


I am sorry specifically about these bushings, 100% of them arrived to me out of spec from our mfg(so the bearings wouldn't fit), they are replacing them with new bushings but in the meanwhile we are re-working them (I am literally standing a lathe working on every single one).


Greg
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Greg Needel│www.robogreg.com
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2014 FRC World Champions with 254, 469, & 74

Last edited by Greg Needel : 14-01-2015 at 14:48.