BlackStar D100R21 - Double Strand 100 Pitch R Sprocket - 21 Tooth Cotton Cleaner Belt The 4L460K is the heavy-duty

The 4L460K is the heavy-duty version of the same belt length

"name":"D&D Global 6/SPA1600 V-Belt — SPA Section

so the Megadyne 7/B66 interchanges with Gates

The Gates 2000-20M-170 PowerGrip HTD Belts 92930715 is a synchronous timing belt with 20M-pitch profile

"mpn":"Bando-8PK1755"

BlackStar D100R21 - Double Strand 100 Pitch R Sprocket - 21 Tooth Cotton Cleaner Belt The 4L460K is the heavy-dutyThe BlackStar D100R21 is a 100 pitch double strand R roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number D100R21 Chain Pitch 100 Number of Teeth 21 Bore Type Plain Bore Hub Style R Strand Count Double Material Steel Outside Diameter 9. 04" Pitch Diameter 8. 387" Approx. Weight 21. 700 lbs Cross references: Browning