Manufacturer dimensional interchange
WorldWide Electric-published interchange row · Match installed ratio (5:1–60:1) · Center distance 2.37 in center distance
WorldWide Electric's HD Cast Iron competitive interchange table publishes HDRF237-L/R at 2.37 in center distance for C-face input / shaft output. Manufacturers marked by WorldWide as not dimensionally interchangeable are intentionally excluded from Replacement Intelligence. Match ratio, motor frame, shaft/bore and application ratings before ordering.
The manufacturer publishes the two models in a dimensional-interchange table or equivalent dimensional comparison.
WorldWide Electric identifies HDRF237-L/R as the target in this published source row · Match installed ratio (5:1–60:1) · 2.37 in center distance.
Dimensional alignment does not by itself prove identical torque, thermal rating, service factor, ratio, accessories, or application suitability.
Accessories, bushings, motor mounts, backstops, shafts, screw-conveyor components, and application duty still need to be checked individually.