Silvey SDM-4

The SDM-4 was an industry standard and one of the best square-chisel chain grinders on the market.

Note: This machine is no longer made, but parts are still available and we offer service and repair.

SDM-4 Chisel Grinder
Silvey SDM-4
Square Chisel Grinder

The SDM-4 Features:

  • Reversible motor that keeps chrome edges clean and the grinding burr on the cutter tooth
  • Adjustable diamond tipped wheel dressers
  • Twin chain holding and feed mechanisms
  • Patented slide design that keeps tooth angles constant throughout the life of the cutter tooth
  • Adjustable motor mount slide to compensate for wheel wear
  • Finger lock hold down pin for improved indexing
  • Sturdy flat bottom stand
  • Flex-mounted standard socket work light for easy angle viewing
  • Threaded feed crank for smooth tooth advancement
  • Adjustable tolerance gibs and neoprene bellow seals on the slide mechanisms for easy maintenance and long wear


Click here for a short video of the SDM-4 in action.

Click here for a SDM-4 owner's manual.

Click here for a SDM-4 parts list.