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1145K2 is a micro-v belt used on serpentine and multi-rib accessory drives — HVAC blowers
"mpn":"TB072053754742"
so a 3/5V750 from any major manufacturer shares the same cross-section and length and runs on the same sheaves
The 3/8V3000 is rated for continuous operation from -22°F to 176°F
"mpn":"150-S3M-1569-D&D"
BlackStar 40BS50 5/8 K2S - 40 Pitch Finished Bore Sprocket - 50 Tooth - 5/8" Bore QD-M 1145K2 is a micro-v beltThe BlackStar 40BS50 5 8 K2S is a 40 pitch Finished Bore roller chain sprocket with 50 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 5 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 40BS50 5 8 K2S Chain Pitch 40 Number of Teeth 50 Bore Size 5 8" Minimum Bore 5 8" Maximum Bore 1 1 2" Bore Type
