Hub bearing maintenance
Tinkering away on the bike in the garage last night, one thing led to another and i ended up taking my rear wheel hub apart to take a look at whats inside, give everything a wipe clean and apply some fresh grease.
In the process i discovered that the hub has four cartridge bearings. The two which are housed in the hub (both different sizes) seemed nice and smooth, but the two bearings in the free hub seems a bit gritty and could probably do with replacing sometime in the near future.
I've got no experience with replacing hub bearings, but is there a general standardised size for the two bearings in the freehub? If not, is there anyway of finding out without resorting to buying expensive measuring tools?
The wheels in question are Vision Trimax T30. The limited information about these wheels online leads me to think that they may have been discontinued.
In the process i discovered that the hub has four cartridge bearings. The two which are housed in the hub (both different sizes) seemed nice and smooth, but the two bearings in the free hub seems a bit gritty and could probably do with replacing sometime in the near future.
I've got no experience with replacing hub bearings, but is there a general standardised size for the two bearings in the freehub? If not, is there anyway of finding out without resorting to buying expensive measuring tools?
The wheels in question are Vision Trimax T30. The limited information about these wheels online leads me to think that they may have been discontinued.
0
Comments
-
Are there any markings/serial numbers on the bearings? You can purchase a 6" digital vernier caliper from Simply Bearings, they can probably supply you with the replacement bearings too.
http://simplybearings.co.uk/shop/produc ... wwodJ5EAyw
http://simplybearings.co.uk/shop/index.php?cPath=3_52270 -
Same as these?
If I were you I'd invest in a pair of callipers so you can measure the parts and be sure. They don't have to be expensive; this would cover most of your bicycle needs.- - - - - - - - - -
On Strava.{/url}0 -
When you want to replace them, you knock them out, you measure them (inner and outer diameter and thickness) and you order the equivalent from Simplybearings online, simple as thatleft the forum March 20230
-
thanks for the advice guys!0
-
DesWeller wrote:
Yes those are the wheels. Maybe they aren't discontinued over in the states, but they seem to be in this country.
Annoyingly the website doesn't state what bearings they run on.0 -
Just found a link on their website for a ceramic bearing replacement (link below). I'm not after ceramic bearings, normal will do fine, but they do give the following specs: 3x61901 2xR6 1x61902 <-- do these numbers mean anything to anyone?
http://webstore.fullspeedahead.com/fly. ... 10&pid=7860 -
Each size has a number in the bearing numbering system.
http://www.skf.com/binary/30-61889/TT08_006.pdf
Probably you need these sizes, but you can't be shure before you have seen yours....
Anyway, I wouldn't change anything if it hasn't play.0 -
Try inputting those numbers into the Simply Bearings website or give them a call.
http://simplybearings.co.uk/shop/advanc ... c_subcat=10
