Steering Stem Bearing Size
Just in case anyone wanted to swap their ball bearing steering head bearings for some tapered roller bearings i do not have the part numbers. 
But I do however have the dimensions of the OEM bearings so you can
call your local shop and see what they have.
The upper bearing measures:
d= 26mm
D= 47mm
Height= 15mm
The Lower bearing measures:
d= 30mm
D= 55mm
Height= 17mm
d = inside diameter
D = Outside Diameter
height of the bearing across outside faces
Hope this helps, if i track down part numbers from NSK of SKF i will post them here!!
Cheers
Lower Bearing SKF Part # 32006 Single Row Tapered Roller
NSK Part# 32006x Single Row Tapered Roller
Upper: Bearing # is 32005 should be able to source it based on that.
But I do however have the dimensions of the OEM bearings so you can
call your local shop and see what they have.
The upper bearing measures:
d= 26mm
D= 47mm
Height= 15mm
The Lower bearing measures:
d= 30mm
D= 55mm
Height= 17mm
d = inside diameter
D = Outside Diameter
height of the bearing across outside faces
Hope this helps, if i track down part numbers from NSK of SKF i will post them here!!
Cheers
Lower Bearing SKF Part # 32006 Single Row Tapered Roller
NSK Part# 32006x Single Row Tapered Roller
Upper: Bearing # is 32005 should be able to source it based on that.
Last edited by johnnycrash; Feb 7, 2010 at 03:44 PM. Reason: info update
Also Found this site, which has both bearings for $40 with dust shields.
I ordered a set...
http://www.z1enterprises.com/product...-30x55x17.aspx
I ordered a set...
http://www.z1enterprises.com/product...-30x55x17.aspx
Just in case anyone wanted to swap their ball bearing steering head bearings for some tapered roller bearings i do not have the part numbers. 
But I do however have the dimensions of the OEM bearings so you can
call your local shop and see what they have.
The upper bearing measures:
d= 26mm
D= 47mm
Height= 15mm
The Lower bearing measures:
d= 30mm
D= 55mm
Height= 17mm
d = inside diameter
D = Outside Diameter
height of the bearing across outside faces
Hope this helps, if i track down part numbers from NSK of SKF i will post them here!!
Cheers
Lower Bearing SKF Part # 32006 Single Row Tapered Roller
NSK Part# 32006x Single Row Tapered Roller
Upper: Bearing # is 32005 should be able to source it based on that.
But I do however have the dimensions of the OEM bearings so you can
call your local shop and see what they have.
The upper bearing measures:
d= 26mm
D= 47mm
Height= 15mm
The Lower bearing measures:
d= 30mm
D= 55mm
Height= 17mm
d = inside diameter
D = Outside Diameter
height of the bearing across outside faces
Hope this helps, if i track down part numbers from NSK of SKF i will post them here!!
Cheers
Lower Bearing SKF Part # 32006 Single Row Tapered Roller
NSK Part# 32006x Single Row Tapered Roller
Upper: Bearing # is 32005 should be able to source it based on that.
Cz for 32005 the size is 47*25*15 and you have mentioned upper bearing size as 47*26*15
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