BlackStar 3020 75MM STL - Taper Lock Bushing - 75mm Bore 2.7/16" so a 300J12 from any

so a 300J12 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

and Jason Industrial 2/5VX560

The BlackStar H50B19 is a 50 pitch B-Hub roller chain sprocket with 19 teeth

16T5/460US is a standardized industry size

"name": "What are the dimensions of BB117

BlackStar 3020 75MM STL - Taper Lock Bushing - 75mm Bore 2.7/16" so a 300J12 from anyThe BlackStar 3020 75MM STL is a 3020 series taper lock bushing, precision manufactured from high grade steel. Taper Lock bushings provide a secure, concentric grip on the shaft through a precision machined taper, ensuring reliable power transmission. Specifications Part Number 3020 75MM STL Bushing Type Taper Lock Series 3020 Minimum Bore 1 2" Maximum Bore 2 3 4" Outside Diameter 4. 250" Length 2" Material Steel Approx. Weight 5. 0 lbs Bore Size 75mm