1.b Norton SOHC, OHV and Side Valve Bearings

Norton SOHC/OHV/SV Bearings : Information on the bearings covered in this Section 

Click on this item to give further detailed information about the specialist imperial bearings listed in this section. See also SOHC Crankshaft section for SOHC Big End bearings.   Note: we spend considerable time searching for correct spec UK made bearings, most now obsolete.  Prices reflect this rarity

- This is the very important twin row, self centering bearing that was originally fitted in both top and bottom bevel housings in all International and early Manx engines. Now obsolete and unobtainable - March 2020:  See detail listing for availability

- Single row (fixed race - not swivelling) RHP bearing, that can be used as an alternative to the original type twin row type (Item no 0005) on the top bevel housing only.  See detail description for this item and description for item 0005 before purchasing

- Single row roller bearing in C3 size from RHP. Fitted to all SOHC engines, both International and early Manx.  This original C3 (looser fit) Version from RHP now unobtainable.  I can possibly obtain by Special Order.  See detail listing for more information

- Single row roller bearing - fitted to the inner of the two driveside mainshaft bearings in the crankcase on all SOHC engines, both International and Manx models.  This listing is for the Non-C3 (standard tolerance) of the high quality RHP brand, as the original C3 tolerance are now unobtainable.  See listing detail for more information

- Single row ball bearing - Fitted to the outer of the two driveside mainshaft bearings in the crankcase on all SOHC engines, both International and early Manx.  This is the correct C3 (loose tolerence) type, from top quality manufacturer RHP - *** 8/3/19: See Note In Detailed Description

- Single row ball bearing. Fitted to timing side Model 30/40 (International) SOHC engines, in correct RHP C3 (loose tolerence) type, from top quality manufacturer. Now obsolete and extremely difficult to source - see detail listing for information

3 screw mainshaft bearing securing plate, to fit all Model 30 and Model 40 International (and CS1/CJ) engines. This pressed steel plate was used to retain the main bearings and ensure they did not 'walk' under heavy use. 

Twin row caged ball bearing. Fitted to Model 30M/40M (Manx) SOHC engines in original C3 looser fit, from high quality SKF manufacturer.  Update April 2020: Limited Stock now available

Twin row caged ball bearing. Fitted to Model 30M/40M (Manx) SOHC engines in original C3 looser fit, from good quality SNR manufacturer.  Update October 2019: Only  limited stock available, see detail listing

4 screw mainshaft bearing securing plate, to fit all Model 30M and Model 40M magnesium engines. This pressed steel plate was used to retain the main bearings and ensure they did not 'walk' under heavy use. 

- Single row ball bearing. Fitted to all SOHC engines, both International and early Manx. 

- Single row caged roller bearing. Fitted to Model 30/40 (International) SOHC engines. These are either RHP or Hoffman (Hoffman became RHP) - both best quality and in correct and very difficult to find C3 fit. 

Cambox Bearing - Camshaft Back Roller Bearing : as fitted to the Model 30M/40M (Manx) cambox backplate - identifiable from the standard International type, in that the Manx backplate is in magnesium. These are correct RHP versions in correct C3 fit - now very rare

Manufactured by a well established and specialist British bearing supplier who have been making these Bigends for many years - this Bigend is of the same design and specification as the original 1930's - late 1950's OHV and SV design - this being a twin row, crowded roller design (i.e. the rollers do not sit in a cage). Comes complete with Bigend nuts

Manufactured by a well established and specialist British bearing supplier who have been making these Bigends for many years - this particular Bigend is of modified 'Caged Roller' design - more suited to high performance than the original Crowded Roller type.  Comes complete with BigEnd nuts.

- Single row ball bearing. Fitted to all pushrod and sidevalve engines (from 1930's to late 1950's). These are original high quality RHP bearings (plastic sealed), in the correct C3 fit - now extremely difficult to find.  Feb 21: Read detail lisitng for update

- Single row ball bearing. Fitted to all pushrod and sidevalve engines (from 1930's to late 1950's). These are original high quality RHP bearings (plastic sealed)- but are in a 'standard' fit, not the original looser C3 fit.  Feb 19: Read detail lisitng for update

- Single row roller bearing. Fitted to all pushrod and sidevalve engines (from 1930's to late 1950's).. These are original high quality RHP bearings (plastic sealed), in the correct C3 fit.  Feb 2021:  See detail listing for update on availability

Mainshaft Shims to fit OHV and SV Engines (i.e. 16H/Big 4/Mod 18/ES2/Mod 19 etc. Set of 6 shims - 2 each of the following 3 sizes: 0.030”/0.018”/0.012".  See detail listing for fitting details

- Large shielded single row ball bearing. This is the main bearing fitted to all upright and laydown Norton gearbox's from the 1930's - 1950's gearbox's. 

- Single row ball bearing. Fitted to all upright and Norton laydown gearbox's mainshafts and Manx model layshafts on the right hand (timing) side.  High quality RHP brand

Single Ball Bearing to fit all Norton upgright and pre-AMC laydown gearbox drive side layshaft - high quality manufacturer

Set of 13 rollers to fit all Norton pre-Amc gearbox mainshaft sleevegears (+1 spare)

Norton Upright Gearbox and Pre-AMC (i.e. laydown) gearbox - bronze mainshaft Thrust Washer 

These are the rollers that fit in the cage at the rear of the inner clutch body - there are 15 rollers fitted but we include a spare in case you drop one!, so 15+1=16 rollers.

- Full set of headrace balls - both top and bottom race - to fit all Norton single frames - 34 balls in all (the correct amount for top and bottom races), plus one spare in case you drop one!, 34 + 1 = 35.