Manufacturer functional interchange
Boston Gear 832B/833B appears in the same manufacturer-published cross-reference row as Falk 03UCBN2(3)-N at Match installed ratio/application · Boston 800 size 830 · Foot mounted.
Boston Gear publishes 832B/833B for 800 Series size 830 in the foot mounted 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.
The manufacturer describes the target family as functionally interchangeable with the listed competitor model or configuration.
Falk 03UCBN2(3)-N and Boston Gear 832B/833B are tied by the published source at Match installed ratio/application · Boston 800 size 830 · Foot mounted.
The source still requires ratings, dimensions, ratio, fit, and application conditions to be checked before ordering.