Author Topic: Conversion Bush for obsolete trailer bearings  (Read 2500 times)

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Offline BN

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Conversion Bush for obsolete trailer bearings
« on: July 01, 2015, 02:56:18 PM »
On several occasions now, I have bought old boat trailers (and a few little box trailers), which are perfectly serviceable, but did not want to keep the primitive and often broken ball type wheel bearings. There is no bearing that will fit from a 20mm shaft to a (30305 part number bearing and stronger hub), metric taper roller bearing. Neither will the ball bearing fit the now standard taper roller hub. The old hubs being made of pressed steel and either buckled, rusty or normally both. My converter fits a 20mm stub and the new bearing part number 30305 with hub. It also saves having to change the suspension from Imperial to Metric, which has different holes sizes and would normally mean a new trailer, so huge savings from a little conversion.

30305 bearing size:

Outer Race Width: 15mm
Width: 18.25mm
Outside Dia: 62mm
Inside Dia: 25mm

I am happy to make more, but would only do so if I had a decent number to make, not just one set as the steel is too costly for one set. If you are interested, please let me know.
« Last Edit: July 01, 2015, 03:07:45 PM by BN »
1953 Albatross
1958 Dowty Turbojet
1965 Mitcham Jetboat
1968 Mitcham OB

Offline BN

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Re: Conversion Bush for obsolete trailer bearings
« Reply #1 on: July 02, 2015, 11:44:33 AM »
How it all fits.

Old pressed steel and no grease nipple hub with only roller bearings from the past on the left. Modern far stronger hub with taper roller bearing on right. These hubs take the number 30305 bearing which is available almost anywhere.
 
Converter fits on original shaft, the new modern hub and bearings for onto converter. A quick spray of Galvetec and the units will look like new. This little converter will save hours and possibly a new trailer.
« Last Edit: July 03, 2015, 03:21:17 PM by BN »
1953 Albatross
1958 Dowty Turbojet
1965 Mitcham Jetboat
1968 Mitcham OB

Offline BN

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Re: Conversion Bush for obsolete trailer bearings
« Reply #2 on: July 03, 2015, 03:18:06 PM »
« Last Edit: July 06, 2015, 10:15:57 AM by BN »
1953 Albatross
1958 Dowty Turbojet
1965 Mitcham Jetboat
1968 Mitcham OB