The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: Fast 58 BSA on 13.10. 2011 18:56

Title: Timken triple tree bearing A10 conversion. Need part numbers
Post by: Fast 58 BSA on 13.10. 2011 18:56

Hello good members of the forum *smile*!

Anyone who can help with me the timken parts numbers for the A10 frame headstock bearing conversion (need #s for both cone and tapered bearing)? Are they the same bottom and top?

Cheers

Title: Re: Timken triple tree bearing A10 conversion. Need part numbers
Post by: Fast 58 BSA on 13.10. 2011 19:07

Cancel request  *smile*I found the bearing #s on the net *smile*.

Title: Re: Timken triple tree bearing A10 conversion. Need part numbers
Post by: pato08 on 13.10. 2011 21:56

Hi Fast BSA
Could you share the numbers with us ?

Pato

Title: Re: Timken triple tree bearing A10 conversion. Need part numbers
Post by: Fast 58 BSA on 15.10. 2011 19:01

Pato,

I did a search and found a bsa goldstar restoration thread on the tonup forum. It has great pics, one of which is of the headstock bearing set up. The part number is SKF 32006 X/Q. Haven't bought it yet, but once I do I will post if there are any problems.

Title: Re: Timken triple tree bearing A10 conversion. Need part numbers
Post by: kommando on 16.10. 2011 12:10

Those SKF's are metric bearings, they must need some mods to make them fit.


Dimensions - d (inside diameter) 30mm
Dimensions - D (outside diameter) 55mm
Dimensions - B (width) 17mm

On my B44 I matched the ID and had to get a bigger OD which I had ground to size on a centerless grinder.

I used this Timken online selector to get the available parts in the size range you are interested in, just be warned not all the part numbers listed are in production.

http://www.timken.com/en-us/Knowledge/engineers/Pages/SearchbyPartNumber.aspx

Title: Re: Timken triple tree bearing A10 conversion. Need part numbers
Post by: Fast 58 BSA on 16.10. 2011 20:51

Kommando,

Thanks for the info. I thought about that too. I'll see what mods will be required when I get around to buying the bearing.