Boston Gear R137-B-M1 Gear Box 1 to 1 Reduction Unit

Boston Gear R137-B-M1 is a 1:1 spiral bevel gear drive from the R/VR series that transmits power between intersecting shafts at a 90-degree angle. It uses spiral bevel gearing with Coniflex tooth form for smoother, quieter operation and higher load capacity, and delivers a true 1:1 reduction with an output speed of 1,750 RPM when driven at rated input. The unit features 0.7500 in input and 0.7500 in output shafts (solid), horizontal mounting orientation (assembly code B), and a 3‑way shaft arrangement. Model size 37, weighs 27.1 lb, and carries a torque rating of 318 in-lb with 8.8 HP at AGMA Service Class I. California Prop 65 warning applies. Typical applications include automation, conveyors, and machine tools where a compact right-angle drive is required without changing speed or torque characteristics.