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gordon stephenson
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You could turn an accurate sleeve to the correct size and slot for the key, Or best solution get a taper lock pulley to suit the shaft,
Not into turning but I would have thought a wall thickness of only 0.7mm would be too thin to machine. I would like to use the original 5 speed pulley if at all possible.
brightspark
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u would have to bore the pulley out in order to make a sleeve to fit the motor
Considered that but I don't think the pulley wall will be thick enough at the smallest pulley end to stand boring out, may have it checked out at our local engineers.
Normsthename
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An engineer I know repairs shafts all the time.
He turns the shaft down to accept a collar which is then machined to size once fitted.
Depending on the torque it is going to take, he either just fits it with permanent locktite, or drills and pins it
Andy
He turns the shaft down to accept a collar which is then machined to size once fitted.
Depending on the torque it is going to take, he either just fits it with permanent locktite, or drills and pins it
Andy
brightspark
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would be a bummer to take the motor to bits and turn the shaft down thoughAn engineer I know repairs shafts all the time.
He turns the shaft down to accept a collar which is then machined to size once fitted.
Depending on the torque it is going to take, he either just fits it with permanent locktite, or drills and pins it
Andy
gordon stephenson
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Hi Brightspark,
I turned a 2hp motor shaft down to fit onto my Boxford. Left the motor built up apart from the fan and fan cover, fan end of motor in the chuck and shaft drive end on tail stock centre, Motor body just stayed stationary while the rotor turned in it's bearings,Been running with no problems for around 5 years now.
I turned a 2hp motor shaft down to fit onto my Boxford. Left the motor built up apart from the fan and fan cover, fan end of motor in the chuck and shaft drive end on tail stock centre, Motor body just stayed stationary while the rotor turned in it's bearings,Been running with no problems for around 5 years now.
Pete.
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Just measure the bottom of the vee - what size do you get?
Not really, I recently did one at 1mm. You could turn a thicker collar to fit in the pulley then once it's fixed in turn it out to fit the shaft. Another thing you could do is turn out the pulley very slightly, say 2mm, to give you a thicker wall on the sleeve without breaking through the bottom of the smallest vee.
If you wanted to turn down the shaft of a motor you could always clamp the motor to the lathe bed and then plug it in I suppose.
shenion
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I have pulleys that came with similar shims. They were 1.6mm though. I don't see any problems if you have a shim turned.
If it is keyed, then it might effect the key strength. If it uses a set screw, be sure to drill a matching hole in the shim.
A have apiece of aluminum tube I turned to 0.47mm. Someone should be able to turn a shim for you.
If it is keyed, then it might effect the key strength. If it uses a set screw, be sure to drill a matching hole in the shim.
A have apiece of aluminum tube I turned to 0.47mm. Someone should be able to turn a shim for you.
Shox Dr
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You need to know the thickness of material inbetween the bottom of the pulley and the diameter of the centre hole, to see if the pulley can sustain the hole been enlarged
You need to know the thickness of material inbetween the bottom of the pulley and the diameter of the centre hole, to see if the pulley can sustain the hole been enlarged
That's it, 5.8mm.
Both, I will need plenty of torque so there will be quite a bit of pressure on the pulley, machine is a Fobco 7/8.
Cheers
Pete.
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Several things you could do with that. If you're lucky the pulley won't fit all the way onto the shaft motor to line up. Then you could make a stepped sleeve and cut the keyslot in the part that bushes the pulley and the shoulder would hold it to size.
Otherwise you could just make your sleeve and split it right along it's length for a key slot, cut the slot half way from one end and use a short key, or cut the key slot only in the middle of the sleeve. All depends on what you have to work with.
Otherwise you could just make your sleeve and split it right along it's length for a key slot, cut the slot half way from one end and use a short key, or cut the key slot only in the middle of the sleeve. All depends on what you have to work with.
