Sumitomo H(C or M) 3140/45 replacement cross-reference

Replacement referenceDirectional lookup

Existing / searched modelSumitomoH(C or M) 3140/45

Published target modelBoston GearF872B/F873B

What the source establishesFunctional interchange

Boston Gear publishes F872B/F873B for 800 Series size 870 in the foot mounted nema c-face column of its in-line helical interchange guide. Boston states the 800 Series is designed to be functionally interchangeable with listed drives while requiring verification of ratings and dimensions.

Evidence meaning

The manufacturer describes the target family as functionally interchangeable with the listed competitor model or configuration.

Sumitomo H(C or M) 3140/45 and Boston Gear F872B/F873B are tied by the published source at Match installed ratio/application · Boston 800 size 870 · Foot mounted NEMA C-face.

Evidence boundary

The source still requires ratings, dimensions, ratio, fit, and application conditions to be checked before ordering.

Other models in the same published row8

Replacement verification checklistBefore purchase

RatioConfirm nominal and actual ratio against required output speed.

Shaft / boreMeasure the driven shaft and verify bushing or bore configuration.

InputCheck high-speed shaft, motor frame, sheave and input interface.

MountingCompare center height, footprint, torque-arm geometry and housing clearances.

AccessoriesDo not assume existing backstops, motor mounts, belt guards or screw-conveyor hardware transfer.

DutyRecheck torque, service factor, shock, starts per hour, temperature and lubrication.