Get old pulleys off the arbor?

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Forum topic by jtylerp posted 09-28-2010 12:38 PM 1907 views 0 times favorited 8 replies Add to Favorites Watch
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10 posts in 2780 days

09-28-2010 12:38 PM

I’m having trouble here. The nut holding the arbor pulley on won’t budge. There’s an indentation in the middle of the arbor shaft and a long indentation on the perimeter of the arbor shaft running parallel to the shaft’s length. Given the trouble I’m having I’m thinking I need to do something with one or both of these indentations to get this pulley off… any tips?

-- Tyler, woodworking newbie

8 replies so far

View TheWoodNerd's profile


291 posts in 3157 days

#1 posted 09-28-2010 04:30 PM

Make sure you’ve loosened all setscrews, it’s not uncommon for a motor pulley to have two.

A pulley can be quite tight on the motor shaft, especially if it’s been on for a number of years. Pulley/gear pullers are cheap and handy to have around.

-- The Wood Nerd --

View hairy's profile


2655 posts in 3497 days

#2 posted 09-28-2010 04:41 PM

A lot of times those will be left handed threads. That’s so they don’t loosen under a load.

If that’s the case, go: Lefty tighty, righty loosey, if ya know what I mean.

-- My reality check bounced...

View jtylerp's profile


10 posts in 2780 days

#3 posted 09-28-2010 11:12 PM

It’s the arbor pulley on a delta contractor’s saw. The “indentation” is more like a slot… how do keyway slots work? I bet that’s what I’ve got. I’ve tried PB blaster and treating it like a LH thread.

thanks for all your help

-- Tyler, woodworking newbie

View MedicKen's profile


1612 posts in 3427 days

#4 posted 09-28-2010 11:22 PM

You might also check for 2 set screws in each location. Its not uncommon to have 2 screws. Give the penetrating oil a chance to go its thing, it may take a day or so. There will be a key way on the arbor shaft. After the set screws are removed you have have to press the pulley off the shaft if it has been there for a long time.

-- My job is to give my kids things to discuss with their

View popmandude's profile


109 posts in 2985 days

#5 posted 09-28-2010 11:31 PM

A key is a (usually ) square piece of steel stock that fits into the key slot. More than one set screw can be common on pulleys. Also, if the set screws have been over tightened they can bugger up the shaft making it a real pain to get off. The nerd is correct, a puller is a must. Be aware the outer edge of a pulley cant’t withstand much force. Back it up any way you can.

View SCOTSMAN's profile


5849 posts in 3550 days

#6 posted 09-28-2010 11:33 PM

You need to use a pulley/gear remover with three legs.Easy when you have one the can be stiff.Alistair

-- excuse my typing as I have a form of parkinsons disease

View jtylerp's profile


10 posts in 2780 days

#7 posted 09-29-2010 03:26 AM

Thanks everybody. Learned a bit more after getting the motor pulley off (not the one I’m having trouble with) because it had a shaft key and set screw. Now I know the arbor pulley and the PIA nut I can’t get off don’t have a setscrew but there is a shaft key slot that the nut doesn’t have a slot for. Think I might end of dremeling the nut…

-- Tyler, woodworking newbie

View DurangoDelta's profile


8 posts in 2640 days

#8 posted 01-29-2011 02:10 AM

Did you have any luck removing the nut? I have the exact same problem with my contractor saw.


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