BlackStar H100Q42 - 100 Pitch Q Sprocket - 42 Tooth 3.5/8" so the 3/5V1900 interchanges with

so the 3/5V1900 interchanges with Gates 3/5V1900

The Gates T5-720-8 Synchro-Power Polyurethane Belts is a synchronous timing belt with T5-pitch profile

com/s/files/1/0666/7721/products/Flat_Idler_86c05b15-0865-4aea-ae08-d609a47d602b

"text": "The A49 is used for general-purpose industrial drives

BlackStar H100Q42 - 100 Pitch Q Sprocket - 42 Tooth 3.5/8" so the 3/5V1900 interchanges withThe BlackStar H100Q42 is a 100 pitch Q roller chain sprocket with 42 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 H100Q42 Chain Pitch 100 Number of Teeth 42 Bore Type Plain Bore Hub Style Q Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 17. 43" Pitch Diameter 16.