In the US our big box home improvement stores and many hardware stores carry them. They probably will not have the cross hole. You might try similar sources in the UK. Another lead would be vendors selling power transmission components.

Hello James,

​If you have a lathe or access to one, it would be much more satisfactory to make your own and get a truly snug, centralised fitting. Slit it longitudinally with a hacksaw and fit it so that the grub screw in the pulley can squeeze it closed across the slit to get a really good grip on the motor shaft.

​Failing that, I'll knock one up for you if you will tell me the length you need down the pulley and post it down to you.

Regards
Brian.

Hello James,

​I rather fear you have ordered 1/2 inch O/D tubing, the O/D is usually quoted as the reference dimension.

​A hole, presumably for the grub screw, will not be as secure as the collapsing sleeve I described. I inherited just such a fitting on my horizontal mill on purchase, it was a constant pain with the screw working loose to leave the pulley rattling until I changed it. The slot should be aligned with the flat on the motor shaft in this case.

​My offer still stands as I don't think you can expect correct sizing without lathe adjustment. In any case, a steel sleeve will be much more durable. Send me a PM with your address if you want to take it up and make a contribution to the poppy fund instead of payment.

​Regards Brian

do not get rid of the Fobco excellent cast iron pulleys,they really grip the belts and run true and last for years,mine are fifty years and still running like they were new.

Totally agree with the advice to turn one's own, close fitting sleeve. You can measure the shaft and pulley bore and so turn the sleeve to be really snug fit to both. Once slit, the grub screw will ensure a good grip, and then you are in business. It is likely that the cast iron pulleys will last longer than contemporary light alloy ones., and will maintain the "original" appearance, as well as behaviour. (Current pulleys may well be metric, and will still need boring or sleeving to fit the motor shaft, so you will have spent money to be doing what you need to do with what you have at present)

Howard

So when exactly does a pipe become a tube?

Hello James,

​Motor shaft and pulley bore sizes are pretty well standardized so your ruler measurements are probably correct, but to make this to size as the sleeve needs to be, better measurements are needed really.

​I bought my Moore and Wright digital calipers from Allendale at one of the Harrogate exhibitions some 4 years ago, they cost me £25 at the time and I have had excellent service and reliability from them, so as your link happens to be for the same company I would endorse your choice. I think they have an offer on M&W at the moment as well.

​I would rewire the machine and fit a proper no-volt release DOL starter switch to it while doing so. If you choose the rating appropriately, its operating range might well encompass an upgrade of motor for the future. I have an old 1/2 inch chuck capacity New Progress bench drill which will do all I ask of it using a 1/2 HP motor

Regards Brian

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Edited By Brian Wood on 09/11/2016 10:04:24

In my interpretation, a tube is normally structural in some way, and not intended to carry any substance.

A pipe carries a substance – liquid, gas, air etc.

They are identical when they are a piece of pipe/tube of identical dimensions before they are put into use, they change definition according to their end use.

So i guess a tube of paint/toothpaste/gel/smarties is just using the term out of context? The word tubular describes a shape, i.e tube-like it doesn't covey a purpose. A pipe can be described to be tubular for example. Therefore they must be one and the same thing.

This is just like asking when a painting becomes a drawing. You're essentially doing the same thing with both, just using different mediums but they could be described as either. E.g surely an ink blot "drawing" has brush strokes painted onto it? Or Lucian Freud's life "drawings" are actually paintings? The only reasonable conclusion is they can be both.  

Michael W

Edited By Michael Walters on 10/11/2016 01:10:05

You can't smoke a tube!😂😂