8B64SF Heavy Duty QD Sheave 0.813" ID Boston Gear change gears are

Boston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input

3600/3000 RPM

• Modifies the carbon micro-structure through precipitation of

Boston Gear’s stem pinions feature small numbers of teeth that are cut integral to the steel shaft

8B64SF Heavy Duty QD Sheave 0.813" ID Boston Gear change gears are8B sheaves are precision machined from gray cast iron, statically balanced, painted with baked enamel finish and are individually packaged. Sheaves are bored to accept QD style bushings. Order bushings separately. The last 1 or 2 letters of the sheave part number designates the QD bushing size. Click Here for Catalog Page