Rexnord SRK200537A Sub Assembly

The Rexnord SRK200537A Carrier Sub Assembly (SRK 4.11) is a planetary-gear carrier subassembly used within Rexnord Planetgear speed reducers to support the planet gear train. It is designed to fit Planetgear units with Atlas and Polaris drive sizes, providing the carrier interface between the sun gear, planet gears, and the ring gear during operation. As a genuine Rexnord replacement part, SRK200537A helps maintain proper gear alignment and load paths in the Planetgear assembly, preserving accurate gear ratios and smooth torque transfer. The SRK family includes multiple carrier sub assemblies (for example SRK 2.85, 3.32, 4.11, and 5.74) to match different gear-drive sizes, so users can select the exact SRK variant that corresponds to their Atlas or Polaris Rexnord Planetgear configuration. This part is documented in Rexnord's Carrier Sub Assemblies catalog as SRK 4.11, aligning with the Atlas and Polaris Planetgear systems.