Triumph 350 3SW wheel bearings.

[Tim L]

Hi all,

Can anyone help me with locating a wheel bearing supplier for a 1939 Triumph 3SW.

Thank you.

Tim.

[Ron]

These are the rare ones for the front Tim. First try fellow WD bike enthusiast Darren Wrudd who has his own bearing company:- email d.wrudd@sky.com. Brian Tillin has found a suitable replacement which he makes a spacer for, If not, google up Bearing Boys. Ron

[Tim L]

Thank you Ron.

[Einbeck Bowl]

On 11/24/2024 at 7:11 AM, Ron said:

These are the rare ones for the front Tim. First try fellow WD bike enthusiast Darren Wrudd who has his own bearing company:- email d.wrudd@sky.com. Brian Tillin has found a suitable replacement which he makes a spacer for, If not, google up Bearing Boys. Ron

 

 

Deleted my post ... and added a better caliper to my wish list for Christmas 🙃

 

Edited Thursday at 01:31 PM by Einbeck Bowl
to avoid confusion

[Ron]

The original axel is 7/16" (.4375 inch or 11.1125mm) Athough metric need not be involved. As you'll see from the picture above that I attached, the original type bearings have a boss/spacer built on at one end. It is possible to find easier, a bearing without that boss and simply turn one up and back it up to the bearing on the axel.  Ron

PS I don't understand your conversions? .43" is 10.922mm

Edited Thursday at 12:01 PM by Ron

[Einbeck Bowl]

My only caliper with "mm/inch conversation" is a piece of crap, my axle is 11.11mm/.43 measured with a better quality "metric-only" caliper.
Ok, I think now I understand. The 00068X cones needs a spacer to the "front nut side", to be identical width as the original "WW11" bearing from the manual.

[Ron]

That is correct.

To convert from imperial to mm :- 7/16" = .4375" x 25.4 = 11.1125mm..... (ie 1" = 25.4mm)

 

Ron

Edited Thursday at 02:37 PM by Ron