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Pulley for Wonder Junior Mill
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SKU: ZQ584, Part Number: WJMP, Shop more WonderMill items


This large heavy duty pulley wheel accepts standard V-belts and can be used to provide power to the Wonder Junior mill from a variety of power sources. Whatever power source you may use, the Wonder Junior needs to be turned no faster than 300 RPM (revolutions per minute), which is about twice the typical speed of hand cranking. Power sources are limited only by your imagination. One popular approach is adapting a standard or exercise bike so you can use leg power rather than arm power. An electric motor can be used, but note that motorizing the mill voids the manufacturer's warranty. (Use of the manufacturer's separate Power Drill Adapter accessory does not void the warranty.) The Pulley Wheel includes a special tool that makes handle removal easy. If you motorize your mill, a full belt guard is essential to prevent injury.

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Overall Rating:
8 Reviews
8 Items
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  • Don't wait to get this pulley.
    By on - Verified Buyer
    As soon as I got my new pulley I put it to use. I installed it on an old stationary exercise bike to grind wheat. I've worked as a millwright for several years and was pleased with the quality of the pulley and the 3 solid locking bolts which should never come loose. I also have a couple of motors to power it but I like this set up so much it's all I need. Let the power grid go down and I'm still grinding wheat the easy way. Put those old exercise bikes to work for something useful ha ha.
    1 person found this review helpful.  Did you?
  • Wonder Mill Pulley
    By on - Verified Buyer
    Great product. Easy to use. We used this pulley to motorize our Wonder Mill Jr. It works great! I would recommend this product because it is good quality and versatile.
    1 person found this review helpful.  Did you?
  • Big Wheel Gets It Done
    By on - Verified Buyer
    Our mill exceeded expectations, producing the size and quantity of millings. I used a 1/4 hp 1850 RPM ac motor with a 2.5 inch pulley. The hopper could be larger, but we improvised. Over all very satisfied.
    1 person found this review helpful.  Did you?
  • Love it
    By on - Verified Buyer
    Fit well and does what I wanted it to do.
    Was this review helpful to you?
  • Good purchase
    By on - Verified Buyer
    Pricey but does the job
    Was this review helpful to you?
  • Great
    By on - Verified Buyer
    Pulley works as it should for my custom setup. Made to last!
    Was this review helpful to you?
  • Works good
    By on - Verified Buyer
    Able to connect with my motor and works as planned.
    Was this review helpful to you?
  • Takes the work out of grinding flour
    By on - Verified Buyer
    Started with the Wonder Junior Mill and it took to long to grind the wheat berries into flour; added the pulley and an motor and now I can get other things set up as the wheat is being ground.
    Was this review helpful to you?


Manufacturer Part Number WJMP
Brand WonderMill
Length 11.9"
Width 11.9"
Height 1.5"
Product Weight 3 lb.
Color Black
Finish Coated
Country of Manufacture India


Use & Care


We stock this product in our Nebraska warehouse. Most of our shipments are by FedEx Ground or Home Delivery and you should receive your order in three business days or less from ship-out. Click here for more information about shipping.