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Manufacturer dimensional interchange
Falk / Rexnord-published interchange row · Verify installed ratio / motor speed · Published size reference Ultramite UB
Falk/Rexnord publishes 12UB in the 281-810 Ultramite dimensional interchange guide beside the listed SEW models. Rexnord instructs users to verify motor speed, ratio, mounting position, and current catalog ratings/dimensions before interchange.
The manufacturer publishes the two models in a dimensional-interchange table or equivalent dimensional comparison.
Falk / Rexnord identifies 12UB as the target in this published source row · Verify installed ratio / motor speed · Ultramite UB.
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.