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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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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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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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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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 ...
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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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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 ...
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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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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 ...
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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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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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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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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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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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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 ...
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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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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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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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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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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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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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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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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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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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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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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 ...
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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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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 ...
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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 ...
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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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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 ...
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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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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 ...
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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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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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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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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 ...
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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 ...
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Gap between internal cartridge headset and fork
so I've replaced the bottom headset on my 2016 Kona Jake the Snake as the old one was rough and rusted. The replacement is the same size in all dimensions however doesn't seem to fit in properly - ...
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How to get rid of hub play in XTR FH-M975?
I recently bought a 2012 Santa Cruz Superlight 29, and there is some play in the rear wheel. The hub is an FH-M975 (XTR). With the wheel off, you can tell there's some play, but I guess there is ...
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What range of rotational speed for bike wheel bearings?
This document from SKF expresses bearing speed in terms of 'n dm', see screenshot below. As rotational speed of the bearing is important for grease selection, what range of rotational speeds do ...
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How can I remove a stuck bottom bracket cup?
I am repairing the bottom bracket of a US$100 bike with hard 2,000 miles (3,200 km). At approximately 1,800 miles (2,900 km) the bottom bracket made a crunchy sound, and after that there was a lot ...
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Should there be grease in my steel frame's tubes?
I've taken apart a road bike from the 70s with a (french) ball bearing bottom bracket. Looking inside I found (what I thought to be) absurd amounts of grease in the tubes coming into the bottom ...
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How to access bearings on this headset?
Since a while my racing bike seems to have delopped a little crackling noise in my headset. I thought servicing the headset bearings might be a logical first step. Unfortunately, when I opend it up I ...
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Suitability of open sided bearings for frame pivots
On a 10 year old bike I am trying to replace miniature frame pivot bearings which measure 9mm x 17mm x 4mm, pictured below, and are sealed with 689z stamped on. They must measure the same dimensions ...
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Headset replacement for Fit Bikes BMX
My son has a Fit BMX bike, seems to be a normal 20" setup. However, the head tube appears to have an inside diameter of 1 3/8", and every BMX headset I'm seeing expects that diameter to be 1 1/4" ID. ...
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Bearings vs. bushings in rear derailleur jockey wheels - which should be more resistant to contamination?
This question came up in a forum I frequent. As background, many of us are familiar with ball bearings, as they are used in many places on bikes: the bottom bracket, the hubs, the headset, etc. Not ...
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Tool to use pulling off end cap from a LIGHTWEIGHT STANDARD, ALL CARBON WHEEL, to change out the 609 bearings from steel to ceramic
I am wanting to change out my 609 bearings, which are steel, and replace with CeramicSpeed or enduro ceramics. Can anyone tell me the safest tool to use when extracting the end caps off this all-...
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Wilier oversize bottom bracket bearing cups for Shimano crank
My bike frame is a Wilier Imperiale with Campagnolo crankset. I am changing the crank to a Shimano 6800. The bottom bracket does not fit to the Shimano one. It is old version WILIER OVERSIZE BOTTOM ...
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What size are Campagnolo Ultra Torque bottom bracket bearings?
I was unable to find the dimensions of Campagnolo bottom bracket bearings. My understanding is that bearings have standard sizes with names like "6200", "6201", etc. See this chart for a big list.
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How to reinstall a freehub with cartridge bearings?
My road bike's freehub has an issue - the outer part of the body has about 1mm of play against the axle, resulting in a wobbly cassette. The freehub still functions but it needs replacing.
It's a ...
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