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

Projection From Centerline – Because of dimensional variation among bearing manufacturers this dimension may vary slightly when different brands of bearings are used. For those who have a critical application please call for specific dimensions.

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

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

Accurately machined, medium carbon steel sprockets and precision ground ball bearings are assembled to provide a heavy duty idler for the most severe conditions. The bearings are pre-lubricated and sealed to maintain grease and exclude dirt and moisture. They aren’t re-lubricatable. The extended inner race with setscrew allows fastening to a pin or shaft without collars or spacing gadgets. In addition, it provides clearance for the chain when bolting the sprocket directly to a framework member or tensioning gadget. A small sprocket for close quarters and a more substantial one for heavier services is supplied in each pitch. If sizes other than those listed are needed, please inquire for quotation.