Tightly controlled face to bore perpendicularity is maintained (TIR of
Ruland clamp style shaft collars do not mar the shaft, are infinitely adjustable, and have superior holding power when compared to set screw collars.Balanced Collar, 1pc Clamp, Balanced, Bore 28mm, 303 Stainless Steel This two-piece shaft collar has a 28mm bore, 48mm OD, and 15mm width.. It has a balanced design for better performance in high RPM applications.