Vortex X133-40-56C-LR Worm Gear Reducer - 40:1 Ratio, 56C NEMA Frame belt-section-5v The BlackStar 2525 55MM is

The BlackStar 2525 55MM is a 2525 series taper lock bushing

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so a 3/5VX787 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

Specifications Part Number 120BS23 2 3/16 K2S Chain Pitch 120 Number of Teeth 23 Bore Size 2-3/16" Minimum Bore 1-1/4" Maximum Bore 3-1/2" Bore Type Finished Bore (Keyway + Set Screws) Hub Style Finished Bore Strand Count Single Material Steel Approx

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Vortex X133-40-56C-LR Worm Gear Reducer - 40:1 Ratio, 56C NEMA Frame belt-section-5v The BlackStar 2525 55MM isThe Vortex X133 40 56C LR is a worm gear speed reducer with a 40: 1 nominal ratio (exact ratio 40. 0: 1), 1. 333 inch center distance, and NEMA 56C input flange. Output is a solid 0. 625 inch shaft with a 3 16x3 32 keyway, oriented for double ended output. Specifications Specification Value Part Number Vortex X133 40 56C LR Series Vortex X Series Nominal Ratio 40: 1 Exact Ratio 40. 0: 1 Center Distance 1. 333" NEMA Input Frame 56C Output Orientation