smart51
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| posted on 6/1/12 at 07:21 PM |
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Wtd: Metric seamless tube 25mm x 1.5mm wall
I'm after a few short pieces of seamless mild steel tube in a metric size, 25mm OD x 1.5mm wall. It is to house 22mm bearings. I saw some
before Christmas but now I come to buy it I can't find it anywhere. Do you have, or know where I can get some? I need half a metre in all or a
170mm piece and 6 pieces about 50mm long. Ta!
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phelpsa
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| posted on 7/1/12 at 10:10 AM |
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25x1.5 tube won't house 22mm bearings. The ID will probably be +-0.3mm (+- 0.1 on OD and wall thickness) and the same on it's roundness,
you can end up with it being anywhere up to half a mil out.
For a press fit roller bearing you're looking at tolerances of 0.02mm which will require a turned housing.
If its a plain bearing or bushing then its slightly different.
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smart51
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| posted on 7/1/12 at 10:22 AM |
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I'm using flanged bearings which locate on the ends of the tubes. so long as they don't rattle, they'll be OK.
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smart51
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| posted on 9/1/12 at 05:41 PM |
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OK. Having previously being told by my local friendly steel supplier that they only do metric in thick wall and imperial in thin wall tubes, I gave
up and went to get something in the nearest imperial size. I was duel told "we don't hold that in imperial, we can get you some metric
though". AAARGH! and OK 
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