Replacements bearings - Formula Track Hubs

monty_dogcp

Noticed that the rear bearings on my Ambrosio/Formula/System EX track hubs are showing a little play - anyone know the bearing spec such that I can order some new ones? -Tried e-mailing Formula themselves but obviously they're not interested in customer service

rdaviesb

Any bearing factor will be able to help you, and they will possibly be cheaper as well.

monty_dogcp

Yes, I know that but apart from pulling my hub apart, I need to know the spec i.e. ODxIDxthickness - there's nothing on the bearing seal

ajb

Are Formula and Ambrosio the same?
In my Ambrosio track hubs the bearings are 6000 C3.
Think OD,ID & thickness = 26,10 & 8mm

pistonbrew

my system-ex hubs have 6000LB's in them at the moment. have also used 6000-2RS, and another type besides iirc.

__________
"The people of Ulverston are liars, drunkards, whoremongers and thieves and follow filthy pleasures" George Fox, 1652.
FGG#2484 & FGG#4529

rdaviesb

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Monty Dog</i>

Yes, I know that but apart from pulling my hub apart, I need to know the spec i.e. ODxIDxthickness - there's nothing on the bearing seal
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

...which is why I take the old ones...... My bearing supplier measures them up for me.

monty_dogcp

Took the hub apart and they are indeed 6000 series i.e. 10mm ID x 26mm OD x 8mm thickness. Looked around and managed to find some stainless ones on ebay for œ2.70 each. See how I get on - ceramic ones are œ15 so maybe an upgrade for the future?

monty_dogcp

Quick update - new bearing fitted last night - and only takes about 10 minutes and what a huge difference - greenandypants ebay seller - 2x S6000RS bearings for œ6 when other places are selling for œ15 each. Recommended upgrade for all those Formula/System EX/Ambrosio/Planet-X track hubs out there!

graham_g

Thanks for the pointer, Monty. No doubt mine would benefit after a year of all weather abuse - it's one of those things that you might as well do given the cost.

Mr P

I've got System Ex hubs, and while the bearings are fine, could one of you fine gentlemen run me through the procedure for removing and replacing the bearings (for when I need to...)?
Thx

monty_dogcp

Easy- remove the nuts and cones. Hit one end of the axle firmly and it will pop-out complete with opposite bearing. Use a hammer and drift to knock-out the other bearing - they are only press-fit. Knock the other bearing off the axle. Clean and grease all mating surfaces. Press one bearing into the hub shell - I used a rubber mallet and a spare socket - slide the axle through and start to fit the bearing into the other side. Press the bearings into place making sure they're flush on both sides - job done!