Refurbished  Koyker Simes grain bin jacks are no longer manufactured.

Koyker Simes jack recommended capacity: 8,000 pounds.

Bin Jacker Supply sells, rents and rebuilds used Koyker Simes jacks.

Koyker Manufacturing took over the Simes style jack production in 2007 until November 2013. They also made some changes by installing a skid plate on the front of the jack base because of the thrust bevel gear fastener and brass bulkhead bushing. They removed the floating bevel gear for a bolt and washer fastener on the bottom of the thrust screw to the bevel gear to help secure it. For these reasons the jack is limited to a lower lifting capacity than the original design of the Sib Simes jacks. Koyker Simes style Jacks are identified by sunrise yellow paint, indented gearbox cover, gears, and a different shape on the jack base and tall top.

• Koyker Simes Grain bin jacks have been refurbished and sold with a full warranty.
• The Jack is sold complete with one set of linkage and one PTO.