Rexnord MR2500101 Operator Shaft is a Mars gear-drive shaft component designed for Rexnord's Mars planetary drive systems, serving as the operator shaft within the MARS family. In Rexnord catalogs and distributor listings, MR2500101 appears as the MR2500101 LS Shaft (low-speed shaft) and is associated with internal reference 10305550; some listings also call it MR2500101 Output Shaft MARS. These variant names reflect cataloging differences across Rexnord documentation and distributor inventories, with MR2500101 listed by sources such as MRO Supply and Applied Industrial Technologies as part of the Mars shaft offerings.
