Rexnord SABA0644-43700 Planetary Gear Reducer

The Rexnord SABA0644-43700 Planetary Gear Reducer is a Rexnord Planetgear shaft-mounted unit in the Saturn Concentric Drive family, delivering a fixed reduction of 99.38:1. In Rexnord Planetgear designs, a sun gear on the input drives planet gears that orbit a carrier, while a ring gear remains stationary, producing a coaxial output; the planet carriers are self-aligning and float radially and axially to maintain gear mesh under load, and the output rotates in the same direction as the input across reductions in a concentric inline configuration. The Saturn Concentric Drive arrangement supports direct mounting to the driven shaft, minimizing misalignment and eliminating the need for a separate coupling in many installations. The SABA0644-43700 designation identifies a Saturn Concentric Drive model within Rexnord’s Planetgear lineup, indicating a compact, high-torque speed reducer suitable for space-constrained applications where a coaxial drive is required. Planetgear units are designed for rugged industrial use, with a proven track record in demanding environments and an emphasis on reliable, quiet operation and long service life.