Why caged bearing only on Disc Rotor side of Shimano Hub M775
01-31-12, 10:53 PM
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Why caged bearing only on Disc Rotor side of Shimano Hub M775
Why caged bearing only on Disc Rotor side of my Shimano Hub, but free ball bearings on the cassetee side, Both sides have 3/16 inch beargs, 11 in the left cage but 13 on the other side.
02-01-12, 12:42 AM
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02-01-12, 09:14 AM
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the Dura Ace FH-7800/7801/7850/7900 all use a retainer.
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
02-01-12, 03:31 PM
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My theory is that the caged bearing on the left side of the hub is because of the off balanced forces when using the Disc brake. The unbalanced loading on the right side of the hub, and in particular on all my bikes, due to the chain is slight...thus free balls on the right side.
02-01-12, 03:34 PM
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I'd have to agree. It's easier to assemble with cages. And if you can't do both sides, even doing one side is easier and better for quality control purposes. They also probably looked at their wear-data on the drive side and found that 15 - 20% more bearing contact on the cups/cones on the freehub side would probably help prevent premature pitting since the right side must support both weight load and most of the axle load for pedaling. The left side doesn't structurally need it, so a cage is good enough. But can't the OP swap out the cage with loose after the fact?
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