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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Pulley Hub Types
I'm redoing the drive in my lathe and the final belt drive is of the
timing belt type, 1/2 pitch, 1-1/2 wide. Anyway I need to buy a new motor pulley and they are available three ways; plain bore, you bore and broach keyway to needed size, QD style where you buy a hub that fits the shaft and the pulley, and 'taper lock', pretty much like 'QD' but with different hub and pulley taper dimensions. As the lathe is out of commission that makes the interchangeable hub styles look more attractive. Is there any particular advantage in favor of 'QD' or taper lock? I'm not particularly well versed in power transmission but it seems the 'QD' is somewhat more common and is a couple bucks cheaper than the taper lock style Any opinions on this would be much appreciated Regards Paul -- ----------------------------------------- It's a Linux world....well, it oughta be. ----------------------------------------- |
#2
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Pulley Hub Types
On Fri, 28 Sep 2007 09:18:14 -0500, Paul wrote:
As the lathe is out of commission that makes the interchangeable hub styles look more attractive. Is there any particular advantage in favor of 'QD' or taper lock? I'm not particularly well versed in power transmission but it seems the 'QD' is somewhat more common and is a couple bucks cheaper than the taper lock style Any opinions on this would be much appreciated QD is a bit more flexible in mounting arrangement since you can get bushings that have either thru or tapped holes for the draw bolts. Taper-lock is more compact as the bushing is flush or recessed on the sides of the pulley. I think the taper-lock looks better for the same reason. Because of the interference fit on the shaft, either is far superior to a bored to size pulley, especially for reversing loads. -- Ned Simmons |
#3
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Pulley Hub Types
I think the interchangable bushing type pulleys are so the power
transmission shops don't have to carry thousands of pulleys for every diameter shaft size. They just need one type of pulley and an assortment of bushings. Tony "Paul" wrote in message . .. I'm redoing the drive in my lathe and the final belt drive is of the timing belt type, 1/2 pitch, 1-1/2 wide. Anyway I need to buy a new motor pulley and they are available three ways; plain bore, you bore and broach keyway to needed size, QD style where you buy a hub that fits the shaft and the pulley, and 'taper lock', pretty much like 'QD' but with different hub and pulley taper dimensions. As the lathe is out of commission that makes the interchangeable hub styles look more attractive. Is there any particular advantage in favor of 'QD' or taper lock? I'm not particularly well versed in power transmission but it seems the 'QD' is somewhat more common and is a couple bucks cheaper than the taper lock style Any opinions on this would be much appreciated Regards Paul -- ----------------------------------------- It's a Linux world....well, it oughta be. ----------------------------------------- |
#4
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Pulley Hub Types
Ned Simmons wrote:
QD is a bit more flexible in mounting arrangement since you can get bushings that have either thru or tapped holes for the draw bolts. Taper-lock is more compact as the bushing is flush or recessed on the sides of the pulley. I think the taper-lock looks better for the same reason. Because of the interference fit on the shaft, either is far superior to a bored to size pulley, especially for reversing loads. Ned Thanks for the insight. I think I have located a free QD hub so it looks like my decision is more or less made for me! Hopefully it will all fit the motor shaft length. Paul -- ----------------------------------------- It's a Linux world....well, it oughta be. ----------------------------------------- |
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