BlackStar D50B45 - Double Strand 50 Pitch B-Hub Sprocket - 45 Tooth EPDM / Synthetic Rubber v=1673989844"

v=1673989844"

so a 2830V428 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

The 3/8V2120 is a banded v-belt from D&D Global's Dura-Prime Band Wedge - 8V Series line

"text": "1800XXH500 is a timing belt used on positive

The D&D Global 15/A86 is a standard V-belt featuring Classical A-section dimensions

BlackStar D50B45 - Double Strand 50 Pitch B-Hub Sprocket - 45 Tooth EPDM / Synthetic Rubber v=1673989844"The BlackStar D50B45 is a 50 pitch double strand B Hub roller chain sprocket with 45 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number D50B45 Chain Pitch 50 Number of Teeth 45 Minimum Bore 1 3 16" Maximum Bore 2 3 4" Bore Type Plain Bore Hub Style B Hub Strand Count Double Material Steel Outside Diameter 9. 31" Pitch Diameter 8. 960" Approx.