BlackStar H40A52 - 40 Pitch A-Plate Sprocket - 52 Tooth MXL Section com/s/files/1/0666/7721/products/14MX_and_8MX_3a903ced-7273-4670-beeb-050bbfcf0466

com/s/files/1/0666/7721/products/14MX_and_8MX_3a903ced-7273-4670-beeb-050bbfcf0466

so the 7/B270 interchanges with Gates 7/B270

The 4/3V600 is a banded v-belt from D&D Global's Dura-Prime Band Wedge - 3V Series line

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com/products/d-and-d-12t5-4200us-timing-belt"

BlackStar H40A52 - 40 Pitch A-Plate Sprocket - 52 Tooth MXL Section com/s/files/1/0666/7721/products/14MX_and_8MX_3a903ced-7273-4670-beeb-050bbfcf0466The BlackStar H40A52 is a 40 pitch A Plate roller chain sprocket with 52 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number H40A52 Chain Pitch 40 Number of Teeth 52 Bore Type Plain Bore Hub Style A Plate Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 8. 57" Pitch Diameter