Questions tagged [bearings]

A bearing is an interface between parts that turn and parts that do not. The hubs in the wheels contain bearings, as do the bottom bracket, the head tube, and the pedals.

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2
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1answer
193 views

Ok to use RS bearings in a scooter instead of ZZ?

I need to replace the bearings on my (3-year-old daughter's) scooter. The bearings it came with are 608ZZ, where the ZZ indicates a steel shield. The bearings I'm seeing on amazon when I search for ...
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2answers
332 views

Servicing worn out bearings cone

I recently noticed a strange "sand paper feeling and noise" when turning the wheel of my bike, and decided that it was time to learn to service the bearings of the hubs (cups and cones ...
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2answers
451 views

Finding replacement headset bearings

Today I was trying to service my headset on my 2016 Felt Z95. When I took the bearings off (caged ones) they just fell apart when I tried to clean them. How do I go about finding replcements? Thanks
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65 views

Cannot remove campagnolo zonda freehub

I have tried following tutorial videos to service my Zonda rear wheel bearings - I want to cleanup the grim and regrease the bearings - such as They all show that ...
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3answers
454 views

What non-obvious maintenance should I do after 6 years/~25k km without professional service

I've ridden my commuter and touring bike (cyclocross frame, but with mudguards, rack, hub dynamo etc.) extensively for the last six years and a total of maybe 25 000 km (~15 000 miles). It has seen a ...
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79 views

My shimano ultegra quick release is not working because the ball bearing inside got lost, can someone help me to identify the size of it?

Can someone help me because my ultegra caliper quick release system is not working because the ball bearing inside got lost (see picture below)
2
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1answer
147 views

I removed my fork from frame, and forgot the order of the headset spacers and bearing races, what do I do?

My bike is the Diamondback Expresso 27.5 and the forks are VAXA 100mm forks and after, when I tried to put them back on, the top tube of the suspension forks wobbles around, even when I've put all the ...
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32 views

Headset bearing dimensions

I've got some IS49/37 headset bearings on order to be used in a custom frame I'm trying to design, the problem is they take a month to arrive. I don't have a technical drawing of the bearings and can'...
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1answer
712 views

How is the load of the bike transferred to the hub cartridge bearings with a through axle?

I'm wondering how the load (or weight) of the bike is transferred to the cartridge bearings in the hub with a through-axle setup. Initially I thought that it is the through-axle that transfers the ...
3
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1answer
126 views

Headset replacement for 1976 Sears Roebuck

I am not a bike expert, however I enjoy working on modern single speeds and beach cruisers, and learning as much as I can along the way. I have tried to teach myself, via the internet and by asking ...
3
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2answers
161 views

Is this axle cone/ball pitting serious?

I took the rear wheel off my bike (80s raleigh with modern wheels, used for short journeys mostly) today, and noticed some uneveness in the rear axle. Disassembled to find slight pitting inside on ...
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2answers
95 views

Hub end cap replacement for a B'TWIN Triban Aero wheel

I have a B'TWIN Triban Aero rear wheel with a Aero 28 hub on my B'TWIN Triban 520 flat-bar. Some heartless **** decided to steal my rear quick release mechanism the other day, losing/also stealing the ...
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2answers
209 views

Shimano MTB hub with pitting cones

When I disassembled my Mountain bike's front hub (Shimano HB-MT400-B) so that I could clean and re-grease the bearings, I found that the cone on one side was developing pits. There are about 4 small ...
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1answer
115 views

Can I use ZZ (steel seal) ball bearing instead of RS (rubber seal)?

TLDR: is 16100 ZZ (steel sealed) 10x28x8mm bearing good for 8.5inch wheel at 25km/h under 100kg load? Long story, in case someone has better solution: I am in process of replacing my rear-drive e-...
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152 views

Do I need to remove this DT Swiss ring nut? (360 hub)

I'm swapping bearings on Roval Traverse rear hub, which is said to have DT Swiss 360 internals, 3-pawl. Do I therefore need to remove the ring nut as per normal DT Swiss instructions? If so I'll need ...
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1answer
54 views

Standing on cottered crank scuffs bearings?

I have single speed road bike, with cottered crank and my caged bearings wear out too often, could it be due to me standing on the crank (like elliptical trainer) pretty often e.g. when i need to go ...
3
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1answer
70 views

Hub bearing preload approaches

I am the owner of a bike with a DT Swiss RWS thru-bolt (kinda like a thru-axle but it fits in regular 9/10mm dropouts) skewer system. I saw in their marketing fluff that one of the supposed advantages ...
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2answers
360 views

Cup and cone bearings: better a little tight or a little loose?

A bike is commonly full of cup and cone bearings: pedals, hubs, bottom bracket, headset etc... The component change but the logic still the same the bearing is in between an axle, a pair of cones and ...
3
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1answer
100 views

NOS vintage hub vs modern hub

I have an early 80s Schwinn Prelude. I need to replace the rear wheel. The question at hand is should I spend $300 on a pair of NOS (new old stock) Superbe Pro hubs, which have the original 126 mm ...
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1answer
217 views

What is the name of the part between a wheel hub bearing and the fork, and where can I find a replacement?

I have a mountain bike (2017 Orbea Loki 27+ H30) and at some point I've lost the piece of the front wheel that fills the gap between the bearing, and the fork. As a result, the front wheel has play ...
5
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1answer
176 views

Are general-use ball bearings okay?

I lost a ball bearing today. Is it okay to go to a hardware store and pick up a general 1/4 in. steel plain ball bearing to replace it? Performance is not a concern, only longevity of parts.
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1answer
379 views

Off brand bearings for hubs?

I'm looking to replace the bearings a of set of Fulcrum Red Power 29 hubs (RT-004 front and RP9-004 rear). I'm having a hard time sourcing them from Canada and I'd also rather order 2 each rather than ...
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1answer
53 views

Help getting the right headset bearings

I need to change my headset bearings, however, there seems to be so many different variations out there, and I'm afraid to order the wrong parts. Why not just order the same type as the old bearings ...
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1answer
139 views

Is this an integrated crown race?

The title says it all. I would like to change the bearings for my headset,but i have no idea if this crown race is removable. It is a Bontrager fork, probably from 2007. Thank you, From Norway.
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1answer
140 views

Broken fork bearing crown race stays

this is my diy electric bike, but in the latest headset servicing (I had to change the seal of the top bearing), I noticed that I've a broken part on the top of the "bearing crown race stays"...
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2answers
285 views

BB386EVO-24mm Press Fit Bottom Bracket Cup Removal

Good day to all! Issue My road bike has a BB386EVO bottom bracket standard with a 24mm internal diameter (I.D.) bearing set. I'm utilising a 24mm spindle crankset so no issues there. What I am seeking ...
4
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1answer
128 views

Damaged full-suspension linkage surfaces - creaking noises

I just got a brand new, high-end aluminium full suspension bike and after the first ride the bottom frame linkage (the big one, near the cranks) started making loud noises (video link with sound). ...
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2answers
190 views

Where should I prefer and avoid cartridge bearings in a bicycle?

All bicycle bearings, hubs, bottom bracket and headsets used to be cup and cone bearings. However, recently there has been a trend to replace these with cartridge bearings in new parts. Is this a good ...
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2answers
255 views

Resealing bearings in chinese OSPW

I am currently rebuilding an old steel bike with some modern parts and am searching for a OSPW because it looks quite cool. However a "real" one from CeramicSpeed seems way to expensive for ...
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1answer
84 views

What race crown for a 3T Exloro fork?

More than half a year ago, I bought a 3T Exploro Team frameset. To my big surprise, when building the bike, the fork's race crown is missing. The brand of the head tube cups is Cane Creek. Asking ...
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1answer
51 views

First time repairing a rear wheel hub, I am hearing bearing on bearing rattle/clicks when spinning

For the sake of doing a restoration I just serviced a rear wheel: new bearings, new grease, new axle and new dust caps. I think I have put enough grease. When spinning the wheel before putting it on ...
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2answers
102 views

Why aren't sealed hub bearings common place? [duplicate]

Loose hub bearings may be cheaper to mass produce, but why wouldn't sealed hub bearings be one of the first upgrades to a bike? It seems that most of us choose loose bearings. I'm thinking of ...
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2answers
272 views

How/where can I find replacements for these 'wheel bearing caps'?

I have started the restoration of a bike picked up from the bins. The bike has taken some abuse. The rear wheel axle was broken, same for the two "bearings" caps or dust seals. I am not sure ...
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1answer
91 views

New DIY project: restoring this bike from the bins. How can I service this back wheel?

I picked a broken bike from the garbage around the block. The bike has some damage. It looks like a stolen bike (spray paint awfully over original color), so it must have had some tough love. I have ...
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1answer
108 views

Rear axle keeps developing play, is it fixable or time for a new wheel?

26-inch mountain bike wheel with Shimano loose ball hub and freewheel. The old axle kept developing play. I installed a complete new one and new bearings and problem persists. Cones are properly ...
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0answers
153 views

How to fix bearing cup for fixings loose wobbly wheel hub of old bicycle?

I have watched videos for Bicycle Freewheel Disassembly/Assembly, and disassembled my damaged bicycle. The back wheel of it started to Cranking, and by opening its part based of this video instruction:...
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0answers
40 views

Freehub with sealed/cartridge bearings

I decided to buy a new freehub and replace it myself, as the one I had broke down (started spinning to both sides). However, I didn't realize the new freehub has sealed/cartridge bearings as opposed ...
5
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3answers
2k views

Major pitting in bearing cups; what can I replace?

I bought a "mystery meat" Peugeot bicycle, it turned out to be 1991 Peugeot "Milano" (couldn't find it in catalogs): 7-speed rear cassette, Shimano 200GS groupset. I disassembled ...
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1answer
143 views

Max speed for wheel bearings

I don't know much about bikes. I've got myself an older Specialized Stumpjumper. I asked myself the other day while I was riding with +50km/h through the forest what the maximum speed is the wheel ...
3
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1answer
529 views

Rear wheel causing road bike to vibrate

I have a 2019 Giant Contend 3 road bike and I have been having an issue with this bike on and off for the past month. The issue is that when I start pedaling the bike it vibrates. The vibration seems ...
3
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1answer
173 views

Front Wheel axle (Quando) with 1/4 bearings

my first post after years of using the forum. I am a mobile mechanic and keep coming up against these Quando front hubs (sometimes unbranded) that have a standard 9mm QR axle spindle, but with larger ...
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2answers
796 views

Just replaced axle on rear wheel. It is loose at first but as soon as I ride it, it tightens and wheel no longer rotates. Help!

Yesterday, the axle on my rear wheel snapped. I spent today trying to replace it with a new axle of same length. Before doing so, I checked bearings, and they seemed ok. When I put the hardware on the ...
2
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1answer
130 views

Clicking front hub after overhaul

I repacked a front hub I haven't worked on before and can't get rid of the clicking. (It wasn't clicking before I repacked it, just sluggish and overdue for an overhaul.) Bike is a 2016 Kona Sutra; ...
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0answers
127 views

Why is my upper headset bearing now pressed into the cup?

This is on my mountain bike. After returning from a ride a month or two ago, I noticed my threadless headset had developed some play. Ever since then, I've had to retighten it occasionally, maybe ...
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1answer
55 views

Lost bearing on disc brake for Kona Jake The Snake 2016

I have this bike, and I appear to have lost the bearing on the front wheel, causing the disc brake to rub up against the fork when I'm riding. (I'm not a bike expert, so sorry if I'm using the wrong ...
2
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1answer
60 views

Where does the third bearing go in my Dyno moto 7 cruiser headset?

I have a "Dyno Moto7" cruiser made in 1997. I removed the forks to paint the frame and there were 3 bearings that came out when the forks were removed. No one can figure out how the third ...
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1answer
235 views

How to mount Ohlins TTX22M to a 2018 Yeti SB 5.5

How do you mount a Ohlins TTX22M (17.87 x 2.25" - 16mm eyelet) shock to a 2018 Yeti SB 5.5? I previously removed a Fox DPX2 which had vastly different mounting hardware (it turns out). The Ohlins ...
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2answers
265 views

Why do cones pit in hub bearings?

So called cones are the the inner races in angular contact bearings in hubs. The outer races, usually simply called races, are usually integral to the hub and cannot be replaced. Cones however are ...
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1answer
544 views

Hard to diagnose noise/squeaking

So I've been on a journey to fix a worrying squeaking noise that is impossible to replicate on a stand. When I am cycling, the rhythmic squeaking noise seems to come from the front on the bike, but I ...
3
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1answer
2k views

Carbon taperd road fork - use crown race or not?

I have a 2016 Trek Emonda ALR 5 with a carbon fork. I am assembling the bike after general maintenance, and have noticed that I am missing (or: think I'm missing = am not sure) a crown race for the ...