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The pulley is cast so may well end up as scrap - but yes, my intention is to replace the pulley for a different diameter one. For the next few days I will just be adding penetrating oil in, to try and ensure rust is broken up as much as possible, then I will tackle attempting to remove it...

The set screw holding the key is proving difficult to budge; I've ordered a new 1/8" hex key with a T type handle to perhaps enable me to apply more torque - until that arrives I'll just be intermittently applying more penetrating oil. IF the set screw doesn't budge, would it make sense for me...

Many thanks for the replies, I've gone back and had another look and seen that it's a key which looks like it's tapered and is held in place by a 1/8" hex setscrew at the bottom of one of the pulley grooves. Put some penetrating oil in and tried heating the pulley, but the screw seems stuck...

Hi, I would like to remove a pulley from an old motor but am not sure how to go about this. There is no taper lock; I've attached some photos which show the pulley. There seems to be a rectangular 'lump' on the face of the pulley partially covering that end of the spindle, I'm not sure if this...

Cheers - I've put penetrating oil in but it's going to take more than that

Many thanks Lloyd.

Thanks a lot, will try all this and hopefully get it off this weekend!

Many thanks Charles, I will try that this weekend

Hi, I hope you don't mind my asking this question here but I thought this was the best forum to seek help with this problem. I'm trying to remove a pulley from a woodworking bandsaw but am unable to release the taper lock. Having removed the two grub screws and inserted one into the hole to...