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20-08-2010 #31
Hi Steve
How did you get on with the normal bearings? I was looking at the 61908 (45x68x12) or the 61809 (45x58x7) as I was hoping the balls where smaller, which is better for high speed apparently......I have been looking all over the place and every one seems to recomed A/C bearings but there are a few that have had good results with Deep groove, but all seem to report overheating and short life. have you had any problems and what speeds are you getting?
sorry for so many questions but I dont want to fork out for A/C bearings if I just need to change £10 worth of bearings every 6 months or so......:o)
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The Following User Says Thank You to Ross77 For This Useful Post:
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22-08-2010 #32
Well the bearings are still ok but not given it too much stick yet, they do get a little warm when running at full speed but it does not seem to be causing any issues. If they do need changing then it won't cost much and will only take 10mins.
What price have you been quoted?
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23-08-2010 #33
Thanks Steve, its good to get advice from some one who has used them.
What price have you been quoted?
Did you notice if the balls in the smaller external dia. are smaller? Reduced mass seems to be one of the critical points for High speed so would be a bonus for the deep groove ones, as I could use 4 or 5 to regain the strengh
they do get a little warm when running at full speed but it does not seem to be causing any issues
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23-08-2010 #34
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24-08-2010 #35Have you considered bearings with ceramic balls? There's quite a few around on eBay. Apparently they're good for 30% faster than steel.
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29-08-2010 #36
Not sure if they would be any use ... IGUS do some weird bearing setups
Tim G-C
“I disapprove of what you say, but I will defend to the death your right to say it.”
(attrib. Voltaire but written by Evelyn Beatrice Hall "The Friends of Voltaire" 1906)
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