Fixture, Grinding, Spin Roll, St. Mary Model 525M




St. Mary’s unique Spin Roll work holding fixtures provide low-cost, precision cylindrical grinding or other machining capabilities. A patented design, employing three intermeshing contact rolls, assures precise, repeatable, automatic linear positioning and concentricity up to .0002″. Spin Rolls mount easily on many standard shop machines, including most internal, cylindrical (ID & OD) or surface grinders, drill presses, finishing, cutting, chucking, and other machine tools.


Overall Dimensions 6-1/8″ long x 4-1/2″ high x 4″ wide
Diameter 1/64″ to 1-1/4″
Length 5/8″ to 5″ standard
Power Manual
Bearings 3 Permanently Sealed and Lubricated
Clamping Single Clamping Knob
Weight 9 lbs.