Proprietary processes developed over 75 years to ensure superior fit, finish and holding power. Tightly controlled face to bore perpendicularity (TIR of <.002" or .05mm) for proper alignment of mating components. Bore size and Ruland name stamped on every shaft collar for ease of identification. Proprietary black oxide process produces a fine glossy finish while increasing holding power and resisting corrosion. Both halves of the two-piece collar are mated together throughout the manufacturing process for proper fit and alignment. Proprietary processes to maintain round bore geometry for tight tolerances, proper installation fit, and improved clamping forces. Highest grade forged screws test beyond industry standards for maximum torque ability. Lead-free steel is standard on all steel shaft collars for weldability, environmental friendliness, and industry compliance. All shaft collars are manufactured from bar stock in our Marlborough, MA factory under strict controls using proprietary processes.
Ruland Manufacturing Co. SP-39-FRULAND MFR CO INCSplit Collar