Inspect and Lube Rear Wheel Bearings

Bike aesthetic/mechanical/electrical modifications and general wrenching advice.
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Re: Inspect and Lube Rear Wheel Bearings

Post by Vex » Thu May 07, 2020 6:23 pm

Champ87 wrote:
Thu May 07, 2020 3:55 pm
Vex wrote:
Wed May 06, 2020 3:54 pm
I picked up a set of the Koyo ones from Brock. I'm going to have them installed when they change my tires. For some reason I thought there would be some extra grease in the package, but I guess they were just saying the bearings are greased with whatever is in the description.
Were there any options for the needle roller bearing? I'm guessing you just stick with the OEM bearing for that one.

From what I read, total ceramic bearings don't require grease. These look like hybrid ceramic (ceramic bearings running in steel race) that would have an appropriate type of grease in there already.
Nothing that I saw for the needle bearings so your guess is likely right. I didn't even see it as a separate option on the site. And yea, it's a hybrid. I figured since they will have the wheels off anyways, why not?
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Re: Inspect and Lube Rear Wheel Bearings

Post by Champ87 » Fri May 08, 2020 1:32 am

Seems like good insurance to me.

Fortunately, the needle roller is one that we can easily inspect and maintain. The sealed bearings are more difficult - you can't lubricate them and inspection is limited to wobbling the wheel to check for free play.

When I had a hub bearing failure on my Triumph Sprint it was one of the sealed bearings. I had no free play, no side movement or roughness when I rotated the wheel. Luckily, I decided pull the hub out for maintenance before a 6,000 mile road trip. That's when I discovered broken pieces of cage from one of the sealed bearings. That bearing was close to total failure.

New sealed double bearing and old bearing parts below. Triumph Sprint ST
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Re: Inspect and Lube Rear Wheel Bearings

Post by FJR919 » Sat May 09, 2020 12:51 am

Thank you Champ for taking the time and trouble for preparing and sharing a very professional maintenance procedure.
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Re: Inspect and Lube Rear Wheel Bearings

Post by Snakes709 » Fri May 22, 2020 7:21 pm

Pulled mine out, found a couple scoring spots on the outer axle. My swingarm and hub assembly were all replaced at 1000kms under warranty due to the pinch bolts cross threading when i loosened them for the first chain adjustment. Swingarm was likely built on a monday morning or friday afternoon as the threads were fucked.
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