How to change wheel bearings.

[digitalcaptive]

they recc prising the New Bearing seals out to chk if more grease might be needed in them (cos makers are mean with the grease sometimes !).

Its not always the case that more grease is better, If quality bearings are used like NSK for example there are what appear to be meager amounts of grease in them, but they are designed to run this way adding extra in there will only push out the seals and effectively shorten the life of the bearings

[TJE]

Thanks, DaveS! Very handy! Is about to change the bearings on my RD07A ...

BR,
Thomas

[ritosxf]

i like " mit der wack "

the wacking bar is best 10 or 12 mm dia , and about 45 cm long , makes an easier job

lmao , i love this web site

regards to all on it

paul

[ritosxf]

just a quickiee add on for longer life span of bearings

remove inner seal of each bearing , this allows more grease to actually get to the bearing races them selves , before packing with grease

old school stuff this

and drill and tap the hub for a grease nipple to allow it to be re filled

also try to NEVER EVER EVER DIRECTY POINT THE JETWASHER AT THE PLACE WHERE THE BEARINGS LIVE IN YOUR WHEELS

as this will dramatically reduce there life span

[Mervinh]

Another way to get em out is get a rawl bolt and do up inside the bearing then drive it out from tother side

[ritosxf]

another good dodge for next time , is to cut a slight groove in either side of the spacer tube , with an angle grinder before putting the bearing assembly back togeather , makes removal and replacement much easier next time ,,,,,,,

[diskow]

I am buying aftermarket seals and bearings.

Does anyone have measurements of Inner radius from Seal on the sprocket Side?

I damaged my old seal and can not be measured.
It would be around 25mm or 26mm or 27mm.

Thanks

[jasonbc]

I can't be bothered finding things the correct size to beat bearing out and beat them back in again without damaging them. A few years ago i bought a bearing and seal drift kit from snap-on for £40 and an SP slideHAmmer with 8 (i think ) adaptors.







The cost weren't that expensive to buy and when doing a lot of bearing the amount of time you save outways the cost easily. Had them a few years now and they are worth there weight in gold. When replacing the bearings in the offroad bike wheels i always remove the seals and put extra grease in as the bikes are used to going through deep water and since doing so i've never had a bearing fail. The bearings come with the minimal amount of thin grease in them as they are designed for dry running, not being submerged in water with corrosive minerals like salt in it. I always pack them out with BEL-RAY anti-salt grease

[diskow]

Thanks for gear info /

Besides that

Inner Radius? Any one?

[jasonbc]

If your buying new bearings get them to supply the seals which match th ebearing all they will do is read it out the book or measure the bearing. What is the bearing number you want sizes for?

These will supply top end bearig at good prices

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