Vortex X175-50-56C-R Worm Gear Reducer - 50:1 Ratio, 56C NEMA Frame T20US 300-S8M-1280 is a standardized industry

300-S8M-1280 is a standardized industry size

so a 1922V426 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

"sku":"11/8VK3150-D&D"

so a 1850H150 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

1000J11 is a micro-v belt used on serpentine and multi-rib accessory drives — HVAC blowers

Vortex X175-50-56C-R Worm Gear Reducer - 50:1 Ratio, 56C NEMA Frame T20US 300-S8M-1280 is a standardized industryThe Vortex X175 50 56C R is a worm gear speed reducer with a 50: 1 nominal ratio (exact ratio 50. 0: 1), 1. 75 inch center distance, and NEMA 56C input flange. Output is a solid 0. 875 inch shaft with a 3 16x3 32 keyway, oriented for right hand output. Specifications Specification Value Part Number Vortex X175 50 56C R Series Vortex X Series Nominal Ratio 50: 1 Exact Ratio 50. 0: 1 Center Distance 1. 75" NEMA Input Frame 56C Output Orientation Right