Pulleys use unique fastening system
This series of pulleys is made for 3/8-inch wide belts. They use the FairlocŪ hub fastening system, which has radial and angular slots, making a transverse wedge attached to the solid portion of the hub on one side. The cantilevered clamping section allows a screw to be tightened and loosened repeatedly, without marring the shaft or affecting torque transmitting abilities. The pulleys come in double, single or no-flange styles, and are made to fit onto 3/16 to 3/8-inch diameter shafts. Grooves per pulley number between 10 and 72.
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