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Colchester bantam imperial gearbox

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Ian McVickers01/08/2018 07:56:38
160 forum posts
80 photos

Hi all,

I have just completed refurbishing the gearbox on my Bantam lathe. Several of the bushes were worn making the gearbox really noisy at full speed. After stripping it down and sizing the bearings and bushes I ordered them all from Simply Bearings. A couple of them were ok and did not need replacing. The large flange bushes were a bit longer than needed so had to be shortened and the flange was larger than required and turned down to suit. Its a fiddly job to do but if anyone else is keen enough to go for it the list of parts I used is here:

1 x AJ0812-08 Oil Filled Bronze Flanged Bush 1/2x3/4x1/2 inch (AJ.0812-08.FL) = £3.65
Pack Size Pack of 1
2 x AJ1822-24 Oil Filled Bronze Flanged Bush 1-1/8x1-3/8x1-1/2 inch (AJ.1822-24.FL) = £18.02
Pack Size Pack of 1
1 x AI2024-24 Oil Filled Bronze Plain Bush 1-1/4x1-1/2x1-1/2 inch (AI.2024-24.PL) = £8.27
Pack Size Pack of 1
3 x AI1012-10 Oil Filled Bronze Plain Bush 5/8x3/4x5/8 inch (AI.1012-10.PL) = £9.45
Pack Size Pack of 1
1 x AI1822-12 Oil Filled Bronze Plain Bush 1-1/8x1-3/8x3/4 inch (AI.1822-12.PL) = £5.95
Pack Size Pack of 1
1 x AI1214-08 Oil Filled Bronze Plain Bush 3/4x7/8x1/2 inch (AI.1214-08.PL) = £3.27
Pack Size Pack of 1
1 x AI1216-16 Oil Filled Bronze Plain Bush 3/4x1x1 inch (AI.1216-16.PL) = £4.79
Pack Size Pack of 1
1 x AI1416-16 Oil Filled Bronze Plain Bush 7/8x1x1 inch (AI.1416-16.PL) = £4.17
Pack Size Pack of 1
1 x AI1214-16 Oil Filled Bronze Plain Bush 3/4x7/8x1 inch (AI.1214-16.PL) = £3.83
Pack Size Pack of 1
1 x AI1214-14 Oil Filled Bronze Plain Bush 3/4x7/8x7/8 inch (AI.1214-14.PL) = £3.65
Pack Size Pack of 1
2 x BA188ZOH Imperial Needle Roller Bearing 1-1/8x1-3/8x1/2 inch (BA.188.ZOH) = £8.04

Also remembering to replace the gearbox plug before trying to fill it with oil helps....

Ian Skeldon 201/08/2018 09:11:59
420 forum posts
29 photos

No good for me as I don't have a bantam, but a very useful post for anyone else that does, nice one Ian.

Emgee01/08/2018 09:17:02
1347 forum posts
212 photos

Hi Ian, did replacing those parts result in a much quieter machine at high speed. ?

Emgee

Ian McVickers01/08/2018 09:31:16
160 forum posts
80 photos

Emgee, I only ran it at full speed for a few seconds last night but it was definitely quieter. Left it running for a while last night at slow speed to run it in a bit and will do it again tonight.

Nick Plumb 123/01/2020 16:54:34
3 forum posts

Ian, is this a Mk I or II Bantam please?

Nick P

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