Boyar-Schultz Challenger H612 Surface Grinding Machine
 
The Boyar-Schultz Challenger H612 is a 6" x 12" manual, hand-feed surface grinder known for its precision and rugged construction. Key features include a 6" x 12" work table, a 7" grinding wheel size, a 1-hp motor, and a 3450 RPM spindle speed, making it suitable for applications like grinding EDM electrodes. It typically comes with an electromagnetic chuck and controller for holding the workpiece, and it moves in three axes via hand cranks.  
 
Core specifications
Table Size: 6" x 12"
Maximum Grinding Wheel: 7"
Spindle Speed: 3450 RPM
Spindle Motor: 1 HP
Longitudinal Travel: 12" (14" total)
Cross Travel: 7"
Max. Work Height: 12" (under 7" wheel) 
 
Features and construction
Operation: Manual, hand-feed with controls for longitudinal, cross, and vertical movement 
Chuck: Often equipped with a 6" x 12" electromagnetic chuck and controller 
Spindle: Features a duplex bearing mount for precision and rigidity 
Table: Built with a heat-treated casting for durability, with a final ground surface for accuracy 
Drive: Belted spindle drive allows for a range of speeds 
 
Dimensions: 39" x 43" x 65"
Weight: 1,000 LBS
Notes: Condition Good