Need Machinist Help - Bushing/Adapter for Steering Stem bearing

CrGuy2T
Profile picture for user CrGuy2T
Posts
4187
Joined
3/11/2015
Location
Santa Fe, TX US
Fantasy
3719th
CrGuy2T 11/23/2015 1:35pm
11/23/2015 1:35pm Edited Date/Time 11/23/2015 1:39pm
Take the bearing and stem to the machine shop. Show them what you need. Usually a bearing fit is going be .001 thousandths loose. It's a simple bushing. Best thing would be find 30mm stem and get the exact measurement for that and show the machine shop both stems so the bushing would be exact. There should be a bearing chart somewhere floating around. Try skf they usually give shaft diameter tolerances.
Dtat720
Profile picture for user Dtat720
Posts
1588
Joined
2/20/2015
Location
Flowood, MS US
Dtat720 11/24/2015 6:28am
11/24/2015 6:28am
Call All Balls racing. They make conversion bearings. The 26x51x15 is one they make for crf to xr conversions.
mark_swart
Profile picture for user mark_swart
Posts
2409
Joined
11/2/2011
Location
Chapin, SC US
mark_swart 11/24/2015 10:17am
11/24/2015 10:17am
Dtat720 wrote:
Call All Balls racing. They make conversion bearings. The 26x51x15 is one they make for crf to xr conversions.
I tried them, unfortunately they said they don't have that size.

I guess another option would be have the smaller diameter lower triple machined out to accept my 30mm stem, then have the larger stem pressed in.
Team Ideal
Profile picture for user Team Ideal
Posts
1142
Joined
9/22/2008
Location
Ste. Marie, IL US
Team Ideal 11/26/2015 6:36pm
11/26/2015 6:36pm
I can make you a bushing, if its the lower it should be a press fit, upper is slip. Send me an email Monday and we can figure it out, idealkb@mmtcnet.com

The Shop

See All »
mark_swart
Profile picture for user mark_swart
Posts
2409
Joined
11/2/2011
Location
Chapin, SC US
mark_swart 11/27/2015 6:48pm
11/27/2015 6:48pm
Team Ideal wrote:
I can make you a bushing, if its the lower it should be a press fit, upper is slip. Send me an email Monday and we...
I can make you a bushing, if its the lower it should be a press fit, upper is slip. Send me an email Monday and we can figure it out, idealkb@mmtcnet.com
That is AWESOME! Yes the botton one appears to have no taper. Will email you with the specs. Thanks so much!
-Mark
Team Ideal
Profile picture for user Team Ideal
Posts
1142
Joined
9/22/2008
Location
Ste. Marie, IL US
Team Ideal 11/30/2015 9:31am
11/30/2015 9:31am
I haven't received an email yet. at least I don't think I did, I didn't look thru my junk mail real close. send one over if you still want to go the bushing route.

Post a reply to: Need Machinist Help - Bushing/Adapter for Steering Stem bearing