Old Britts – Commando Wheel Bearing and Seal Chart
Download the complete PDF version using the green download button at the top right of this page for a detailed Norton Commando wheel bearing, seal and sealing washer reference chart covering standard and sealed bearing arrangements for front disc, front drum, rear drum and MK3 rear disc wheel assemblies.
This Old Britts technical reference brings together the key bearing and seal information needed when servicing Norton Commando wheel hubs or planning a sealed bearing conversion. It provides a clear comparison of original factory bearing layouts, replacement sealed bearing options and the related seals, washers and hub components required for each wheel type. The chart also includes important modification notes where additional machining or spacer changes are required, including bearing spacer shortening, dummy axle alterations and bearing bore depth changes for certain sealed bearing upgrades, making it a useful workshop guide for restorers, home mechanics and owners preparing wheel hub repairs or upgrades.
Contents Include
- Front disc wheel bearing and seal chart
- Pre-MK3 and MK3 front hub references
- Front drum wheel bearing specifications
- Rear drum hub bearing and seal data
- Rear drum sprocket bearing information
- MK3 rear disc hub bearing references
- Standard and sealed bearing comparisons
- Right-hand and left-hand seal listings
- Sealing washer part number references
- Modification notes for sealed bearing upgrades
