Page 1 of 1
Steering head bearing
Posted: Sat Sep 26, 2020 7:36 am
by Normandy10
Trying to locate a lower bearing for my fork conversion, 1992 GSXR-600 steering head to a 1995 GT550. I need an All Balls p/n 99-3515-5, 48mm od, 30mm id,12 mm thick, but have had no luck tracking one down. They show it as out of stock, but the site allows no back order, no reply from them yet if they will be getting more anytime soon, and had no luck yet finding an alternate distributor. Any other sources out there?
Re: Steering head bearing
Posted: Sat Sep 26, 2020 9:34 am
by jabcb
For my 72 GT550 cafe build with stock forks, I used All-Balls lower bearing 99-3508 (27x48x14mm) & upper bearing 99-3509 (25x48x13mm).
The 14mm lower bearing worked out fine.
All-Balls 14mm lower bearing in the size you need: 99-3503-5 (30x48x14mm). Per All-Balls, its in stock.
https://www.allballsracing.com/99-3503-5.html
Alternatively, Pyramid might have a bearing in the size you are looking for.
Re: Steering head bearing
Posted: Sat Sep 26, 2020 11:59 am
by Normandy10
I’ll need to look at the stack-up to see if the 2mm thickness will still fit. Thanks for your input.
Re: Steering head bearing
Posted: Mon Sep 28, 2020 5:35 am
by daxman
In the UK we have a number of supplies like this..
https://simplybearings.co.uk/shop/Taper ... index.html" onclick="window.open(this.href);return false;
all the tapered rollers you can think of... once you know the size needed. I'd be surprised if there aren't similar vendors in the
USA.
Re: Steering head bearing
Posted: Thu Oct 01, 2020 7:19 am
by Normandy10
After much searching I ended up ordering from Simply Bearings in the UK, as they were the only source I could find that could supply both the bearing and correct seal ring plate. I did have to call and talk to me of their tech support people but found the very helpful.
Re: Steering head bearing
Posted: Thu Oct 01, 2020 5:03 pm
by daxman
Normandy10 wrote:After much searching I ended up ordering from Simply Bearings in the UK, as they were the only source I could find that could supply both the bearing and correct seal ring plate. I did have to call and talk to me of their tech support people but found the very helpful.
Good to know - I hope it works out.
Re: Steering head bearing
Posted: Thu Oct 01, 2020 9:50 pm
by jabcb
Marksman is another UK supplier of the bearings & seal:
https://shop.marksman-ind.com/seals-for ... -658-c.asp
This webpage has the All-Balls logo for roller bearing seals. Their seal part numbers are the same as All-Balls. You can order those seals by part number from All-Balls:
https://www.allballsracing.com/quickorder/
Re: Steering head bearing
Posted: Fri Oct 02, 2020 7:17 pm
by Normandy10
All Balls had the upper bearing and seal but no stock or back-order for the lower, that’s why I had to look elsewhere.