BlackStar R1 2 1/8 - Split Taper Bushing - 2 1/8" Bore Powergrip Twin Power com/products/gates-8-5vp2500-predator-powerband-v-belt"

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The D&D Global 300-S8M-1440 is a synchronous timing belt with S8M-pitch profile

The Gates 8MX-90S-21 Poly Chain GT Sprockets 77182090 is a timing belt sprocket

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BlackStar R1 2 1/8 - Split Taper Bushing - 2 1/8" Bore Powergrip Twin Power com/products/gates-8-5vp2500-predator-powerband-v-belt"The BlackStar R1 2 1 8 is a R1 series split taper bushing with a 2 1 8" finished bore, precision manufactured from high grade steel. Split Taper bushings use a two piece split design for easy shaft mounting and are ideal for sheaves, sprockets, and couplings. Specifications Part Number R1 2 1 8 Bushing Type Split Taper Series R1 Bore Size 2 1 8" Minimum Bore 1 1 8" Maximum Bore 2 13 16" Outside Diameter 4. 000" Length 2 7 8" Material Steel Approx.