Originally Posted by discomick
I am considering fitting bearing savers to my twin axle it's an Admiral trailer with peak axles
The bearings savers you see fitted to Indespension's trailers (the sprung loaded type) generally (only generally - before anyone shouts!
) fit only their own drums. The bearing saver size is 50.25mm.
Most Peak drums, for twin axle trailers, have a 51mm dust cap size (200mm and 203mm). The larger drums (250mm and 300mm) have a 70mm dust cap size. It'd be worth whipping a dust cap out and accurately measuring the internal boss diameter. Don't be tempted to measure the dust cap as they often distort and will give you a false measurement! Obviously, that 0.75mm means that the bearing savers will just drop out
though if you have the 70mm size boss then you could get a packer / shim to make up the difference.
Beware false imitations too! You can buy 'bearing savers' and 'bearing buddies', but they're not sprung loaded. Ergo, you've just paid for a glorified dust cap with a grease nipple in it....
Sorry, all sounds a bit gloomy, which wasn't my intention - just want you to make sure you get the right thing!