Materal

B

boodogboo

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I have a worn out pulley on one of my Gravely’s it looks to be cast. What materal should I use to make a new one, my smithy can handle 5”aluminum pretty good but 5” steel would be a lot of abuse. O.d.5” x 2” center hole 0.875 . Anyone like to have this job let me know. Thanksimage.jpgimage.jpgimage.jpg
 
The bore and keyway look fine. Sure you couldn't repair it by recutting the slot for the belt?
 
boodogboo said:
I have a worn out pulley on one of my Gravely’s it looks to be cast. What materal should I use to make a new one, my smithy can handle 5”aluminum pretty good but 5” steel would be a lot of abuse. O.d.5” x 2” center hole 0.875 . Anyone like to have this job let me know. ThanksView attachment 291523View attachment 291523View attachment 291523
Click to expand...
ThinWoodsman said:
The bore and keyway look fine. Sure you couldn't repair it by recutting the slot for the belt?
Click to expand...
sorry that is the good one, the one I need is busted and has been discarded.
 
If you can get rid of the protrusion for mounting to the shaft (e.g. by using a collar on the shaft, or making it a cylinder that is bolted to the pulley if th shaft is too short) then you can use a grey iron round : MSC Direct 8" dia 2" cast iron round (the 6" dia tops out at 1.5" thickness). This won't have the hard skin that cast iron does, so it will be easier on your tools.

If you need that shape, though, you probably have to make a mold and cast it. The cost of the metal would be astronomical otherwise (a 5" dia round that is 2" thich for the pulley and another 3-4" for the protrusion).
 
a 5" pulley is easily obtained
www.ebay.com

Cast Iron 5" Single Groove Pulley V Style B Belt 5L for 7/8 Inch Keyed Shaft | eBay

Masterdrive single groove 5" pulley for B / 5L belts. This is a high-quality cast iron pulley and is designed to fit a 7/8" keyed shaft and features dual set screws to ensure a completely secure fitting. Most pulleys that are similar to this only have one set screw, making them less reliable in...
www.ebay.com

for $30 i wouldn't even mess around, i'd buy the pulley
 
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