Inner  bearing ring broken in 2 pieces

Rollers, 2 were broken, one piece never found.

 

THE WD-TRIUMPH

The Triumph is fitted with a conical roller Timkin wheel bearing.
It's a divisble bearing, 7/16 internal diameter and an outer diameter of 1"7/16.
Outer ring number 2K-00152x and inner ring 2K-00068X and GH3.
After more than 65 years these bearings are often worn out or as in my case badly damaged.
The inner ring was broken in 2 pieces and the 2 rollers were broken, we could not find one half of a roller.
Replacement of these bearing is not a luxery but for many bikes desperatly needed.
The orginal Timkins are hard or almost impossible to find, the German company Cornucopia Enterprises
has bearings for sale; 95 Euros/bearing.
The bearings in my own bike were apparently replaced in the past as I found 2 different makes outer rings; one SKF
and the other manufatured by SKEFKO.

 

 

A good option is to replace the origial Timkin for a metric SKF bearing, these are good available and very cheap.
We have used the SKF 6201-2RSH with a internal diameter of 12 milimeter and a outer diameter of 32 milimeter.
This is a fully enclosed self lubricating bearing, so no maintanance required.
The original wheel shaft is 7/16 which is 11,1 milimeter and a 12 milimeter shaft can be used without adapting the forklegs.
We used metric fine threat, M12x1, so it looks original.
To fit the bearing in the wheel a bush is used to adapt the outer diameter to the required 1"7/16.
This is a job for a lathe, which is in my case still missing in my workshop.
Fortunatly a good friend has a lathe at work, so he made the bushes for me.
Between the bearings we put a spacer to make sure the bearings stay at their place.
The job is finished now and I have tested it for 40 miles without trouble.

Thanks Ed, bike rides fine again!