Brown & Sharpe Taper Large Diameter Carbide

Brown & Sharpe Tapers were introduced by the Brown & Sharpe Manufacturing Company and have a nominal taper-per-foot of 1/2 inch. In reality, the tapers are not exact to the specification, but range in size from .49973 to .51612 taper-per-foot. Stark Industrial large diameter carbide centers are made of bearing quality 52100 steel, with the shank being heat treated to 40 - 45 Rc, and guaranteed to have .0002 or less total-indicator-runout.