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Bridgeport part size.

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bill ellis05/04/2019 17:38:50
71 forum posts
2 photos

Hi all, a little help required, I'm in the process of rebuilding a Bridgeport and I need to find the size of a part.

In the handwheel clutch on the quill housing assembly is a screw with a spring under it which bears on a ball bearing which acts as a detent for the up/down quill feed direction. Someone had fitted a ball bearing which is too large to go fully in the recess and thus was not doing its detent job. The ball bearing is part no ST132 (1402) and I wondered if anyone knows off hand what is the correct size of ball so I may get one from a ball bearing supplier. I may resort to measuring the recess but if anyone knows I would be greatful for the info.

In case you wondered why I do not just order one from a bridgeport spares stockist this is the reason.

Part ST132 steel ball, cost 37p, delivery £7.95 (yes I could not believe it so I rang them up and queried it), VAT £1.67, grand total £9.99 for a single ball bearing, I don't think so.

Cheers

Bill

David George 105/04/2019 18:14:22
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2110 forum posts
565 photos

Hi Bill the ball is a 3/16 steel ball if you have the parts list it would tell you. Sent you s PM .

David

bill ellis05/04/2019 18:51:23
71 forum posts
2 photos

Thanks David, I thought it would either be 3/16 or 5/32. Off to the bike shop I go.

Regards

Bill

bill ellis05/04/2019 20:35:31
71 forum posts
2 photos

All sorted, found an old bicycle pedal in my box of bits, just happened to have 3/16 ball bearings in it. I now have a lifetime supply smiley

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