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Questions tagged [cones]

For questions about cup-and-cone type hub bearings (as opposed to cartridge bearings). Cones form the part of the bearing that is fixed to the axle, while the balls support the hub (the cup part) so it can rotate. Cup-and-cone bearings are simpler, but can be trickier to tune to optimal performance. Because of the narrow size and tight clearances special wrenches, called "cone wrenches" are used to adjust the cones.

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Cone and lock nut adjustment on the drive side is impossible on my back wheel

The right side cone is covered with a cup style spacer and the cone wrench cannot be used to fully tighten the lock nut. I think this metal cup serves as some kind of seal. How can I retighten cone ...
Pierre Labrie's user avatar
3 votes
2 answers
865 views

My cone split into two parts

I just started to service the bearings on my Carrera Subway 1. I removed the cone and found that the outside ring separates from the main cone. You can see this in the pictures. What is this ring? ...
sReall's user avatar
  • 33
9 votes
1 answer
469 views

Possibility to machine hub cones

A while ago, I started buying and fixing used bikes and parts. As a result, I have quite a large number of old individual wheels lying around, most of them with bearings that are no longer good. Since ...
Burki's user avatar
  • 1,787
5 votes
2 answers
560 views

Does a z-shaped cone wrench exist?

This is a massive cone, and I was under the mistaken belief that if it remains perfectly smooth, I can either overhaul it yearly, or grind it with a Dremel and repack the grease every two years, and ...
Sam7919's user avatar
  • 9,900
2 votes
1 answer
430 views

Are Shimano cone part-numbers sold in packs of ten and not available to consumers because they are meant to be dealer items?

I see that Shimano has part numbers for every washer, nut, and cone in each hub, but these are sold in boxes of count 10. Is the idea that these (cones, in particular) are consumables and one would ...
Sam7919's user avatar
  • 9,900
3 votes
2 answers
2k views

How do I identify the correct replacement cones, or the right cones+axle?

In this video the "path" left by the ball bearings in the cone is quite wide whereas the path in my cone (on a road bike) is very narrow. I am wondering if perhaps the narrow path meant ...
Sam7919's user avatar
  • 9,900
10 votes
2 answers
2k views

Why do cones need special wrenches?

Question is in the title. In other words: why aren't the cones made in such way that you can tighten them with a "normal" wrench? Is this only for historical reasons, or does it have any ...
Attilio's user avatar
  • 563
4 votes
2 answers
2k 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 ...
JMayer's user avatar
  • 367
1 vote
1 answer
874 views

How do I get this cone nut off?

I’m attempting to remove a freehub and have removed the locknut and washer on the non-drive side. However, the cone/cone nut doesn’t seem to want to come off. Is this nut supposed to unscrew from the ...
Jacob's user avatar
  • 35
0 votes
1 answer
818 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 ...
Steve's user avatar
  • 1
1 vote
1 answer
647 views

How to correctly identify bearing cones for axles, to find replacements?

The cones of a bicycle front axle are quite pitted, and I decided to replace them. The Axle still is fine, I'd only need to replace the cones. The problem I'm having is finding replacement cones. I'm ...
polemon's user avatar
  • 111
1 vote
1 answer
2k views

Front axle cone replacement - sizing

So I am trying to replace my pitted front axle cones, but struggling to find the parts of the right size. My axle diameter is 9.4mm on the thread and 8.8mm on the smooth part, and respectively the ...
Yuriy's user avatar
  • 791
1 vote
1 answer
442 views

Replaced axle and now clunking in back

I finally got a rear axle replaced, and all new cones on a new axle... I assembled it back together with 7 or 8 of the bearings in on each side and some grease, put it all back together, put the ...
NoBugs's user avatar
  • 461
5 votes
4 answers
3k views

Pitted Cups - Can I get away with this level of pitting?

I have two bottom bracket cups that I'd prefer to reuse (finding Avocet Bottom Bracket cups even on Ebay is hard!). I have purchased a replacement Avocet spindle of the correct size. I'm wondering if ...
Peaches Stevechu's user avatar
5 votes
1 answer
2k views

What is the regular maintenance on electric hubmotors?

I don't own a Blix bike/electric bike though I rode one once... I was wondering where are the technical docs/howtos on the rear motor's maintenance? I have to rework the back wheel, replace axle or ...
NoBugs's user avatar
  • 461
4 votes
2 answers
1k views

Axle - rear hub and washer thing a bit loose

I have a rear wheel that has needed work 3 or more times in around 3 years (of not very regular riding) and I'm wondering if something is especially wrong with the setup on this FUJI road bike. A few ...
NoBugs's user avatar
  • 461
2 votes
1 answer
4k views

Wheel squeaking at slow speeds and slight play in the wheel bearings, related?

When I am pushing the bike or (lately) cycling slowly, I can hear/feel a slow squeak/skreech from the front wheel. I can feel it through the handle bars, and it isn’t quite the sound of brake pads ...
Karthik T's user avatar
  • 541
2 votes
2 answers
1k views

Cone of axle damaged?

Looking at the provided image, is the cone sufficiently damaged that it need replacing? Thanks!
Panga97's user avatar
  • 21
4 votes
3 answers
352 views

Is this cone nut in proper condition?

This is the original cone nut of a new coaster brake hub I bought recently. I didn't install it yet, it's new. What bothers me are those weird stains / corrosion signs on the bearing surface. It ...
Robert's user avatar
  • 2,079
2 votes
0 answers
96 views

What size rear axle and cones for 1999 Schwinn Cruiser 6?

What size rear axle and cones fit a 1999 Schwinn Cruiser 6 bicycle. I cannot find a part number or identifier, is it the same size as BMX parts?
Joe's user avatar
  • 21
4 votes
2 answers
2k views

Can a hub casing be warped/bent?

For a couple weeks now, my commuter bike has been creaking ominously while I pedal, and just the other day, the rear wheel began to wobble up to a full centimeter to either side (rubbing the frame) ...
E. Hunter's user avatar
  • 123
8 votes
1 answer
1k views

Dent in bearing cone, try to get a new one, or can I keep riding like this?

So I opened my rearhub, because there was a lot of dirt in there after 4000 kilometers usage and I found that there is a little dent in the bearing cone. When I slide a bearing ball over that "dent" I ...
Martin's user avatar
  • 215
5 votes
1 answer
397 views

Is axle cone pitting more common on rear drive side?

I finally got into the rear hub of my new-used bike and found one cone pitted, the drive-side cone only. The other three cones are fine. I happen to have also picked up a second, compatible bike ...
compton's user avatar
  • 2,511
5 votes
3 answers
1k views

Town bike intermittently harder to pedal

I have a Dutch town bike with backpedal brakes (omafiets). I live in Amsterdam where it's flat and have checked the tires are fully inflated. Originally the bike was very easy to pedal and often it ...
Sam Brightman's user avatar
1 vote
1 answer
198 views

Where to find a 14.4 mm long and 16.9 mm wide hub cone?

I was servicing my bike's ball bearings in my wheels when I noticed that the rear hub cones need to be replaced, as they are heavily wearing down. I looked online for replacement hubs but none fit the ...
Newhall's user avatar
  • 13
6 votes
3 answers
29k views

Rear hub repeatedly coming loose

My rear hub keeps coming loose which causes the rear wheel to wobble. I'm pretty sure that I know how to tighten the cones properly and I've also had the bike serviced in my local shop. Every time ...
alexmuller's user avatar
5 votes
2 answers
404 views

Dynamo hub cones regulation

I have bought my first dynamo hub wheel with Shimano DH-3N72 hub. The axle of the wheel fells like if it is over-tightened a bit, it rotates with feeling of clicks. Should I loose the cones in the ...
constpetrov's user avatar