Idler Sprockets: Ball Bearing Idler Sprockets have sealed ball bearings with extended inner competition and setscrews for securing to the shaft.

Projection From Centerline – Because of dimensional variation among bearing manufacturers this dimension can vary greatly slightly when different brands of bearings are used. If you have a crucial sprockets application please call for specific dimensions.

Inner Race projection has 2 established screws on long side to secure bearing to shaft.

“Basic Dynamic Rankings” calculated according to AFBMA standard for “Long Ranking And Fatigue Lifestyle For Ball Bearings”

Accurately machined, medium carbon steel sprockets and precision ground ball bearings are assembled to supply a heavy duty idler for the the majority of serious conditions. The bearings are pre-lubricated and sealed to preserve grease and exclude dirt and moisture. They are not re-lubricatable. The extended inner race with setscrew allows fastening to a pin or shaft without collars or spacing products. In addition, it provides clearance for the chain when bolting the sprocket right to a framework member or tensioning device. A small sprocket for close quarters and a larger one for heavier support is offered in each pitch. If sizes apart from those listed are necessary, please inquire for quotation.