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.  Please confirm you have ordered the correct bearing for your model before opening sealed packaging - click on this item for more information

- 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

- Single row ball bearing. Fitted to timing side Model 30/40 (International) SOHC engines.  These are from top quality manufacturer - RHP, but are in a standard (non-C3 tolerance), slighty cheaper than Item 0020.  Now obsolete and extremely difficult to source - see detail listing for information

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

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. Price is Each

4 screw mainshaft bearing securing plate, to fit all Model 30M and Model 40M (i.e. pre-Featherbed Manx type) magnesium engines. This pressed steel plate was used to retain the main bearings and ensure they did not 'walk' under heavy use.  Price is Each

This is the shallower type of Model 30/40 main bearing plate that was fitted to very early SOHC Cammy engines - we believe prior to 1933 (although it is difficult to be certain when the changover occurred, give or take one year - so check detail listing for more information.  Price is each

- Countersunk screw used to retain securing plates for both main bearings in the crankcases and front camshaft bearings. These are the screws that are soldered over their heads once fitted, to ensure they dont work loose. This is for a bag of 3 screws

- Countersunk screw used to retain securing plates for both main bearings in the crankcases and front camshaft bearings. These are the screws that are soldered over their heads once fitted, to ensure they dont work loose. This is for a bag of 9 screws.  See listing for more information

- Single row ball bearing.fitted to the main SOHC cambox shell (i.e. front cambox bearing) on a  SOHC cambox's from 1931-56, both International (alloy) and SOHC Manx/M40 and some Featherbed (magnesium) cambox shells.  This bearing is from a top quality bearing manufacturer and will be either RHP or SKF dependent on current availablity. Price is each

- 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.

Manufactured by a well established and specialist British bearing supplier who have been making these Bigends for many years - these Big End Nuts are to fit the standard OHV and SideValve Norton Big Ends.   Price is Each

- 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

- 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), but in a Standard (i.e. non-C3 fit).  May 2021:  See detail listing for update on availability

- Single row roller bearing. Fitted to all OHV/SV pushrod and sidevalve engines (from 1930's to late 1950's). These are the correct original 'C3' looser fit bearings - but are from a slightly lesser quality NKE brand (i.e. not RHP Brand).  See listing for more detail

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: 0.2mm (8 thou)/0.3mm (12 thou)/0.5mm(20 thou).  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 early 1930's through to the late 1950's, from a good quality manufacturer. Price is Each.  Feb 2022 Update: Back in stock, but see listing for future availability

- 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