Planetary gearbox for precision indexing — 40:1 reduction, 700 N.m continuous
The GBX1600401101G is a Schneider Electric planetary gearbox with straight teeth, 160 mm external diameter, and a 40:1 reduction ratio. It delivers 700 N.m continuous output torque at 100 rpm and 30 °C, with a maximum output torque of 1120 N.m at the same speed and temperature for peak loads. The 94 % efficiency and low moment of inertia (5.28 g.cm²) make it suited for servo-driven indexing tables, rotary axes, and positioning stages where the motor must accelerate and decelerate the reflected load quickly without oversizing the drive. Torsional rigidity is 41 N.m/arcmin — a stiffness figure that limits windup under reversing or oscillating loads. Combined with the 10 arc.min maximum backlash, this gearbox fits applications where repeatable positioning within a few arc-minutes is acceptable, such as pick-and-place or light machining axes.
Torque, life, and derating — the 30 °C, 100 rpm baseline
The service life of 30000 hours at 100 rpm and 30 °C is the baseline for all load ratings. At the continuous torque of 700 N.m, the gearbox is rated for that full lifespan. The maximum torque of 1120 N.m is a short-duration peak — sustained operation at that level drops the service life below 30000 hours. Axial and radial force limits are also tied to the same duty cycle: 6000 N axial (Fa) and 4200 N radial (Fr) for 30000 hours at 100 rpm, or 8000 N axial and 6000 N radial for 10000 hours. If the application imposes higher overhung loads, expect a shorter gearbox life. The gearbox is lubricated for life — no oil-change interval. The shaft output seal is rated IP54, so it is protected against dust ingress and splashing water but not washdown. Mounting position is unrestricted, but the ambient temperature range of -25 to 90 °C must be respected; operation above 30 °C derates the torque and life proportionally.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX1600401101G as obsolete. Because the gearbox is a mechanical component with no firmware or electronics, a direct replacement from the same GBX series with the same frame size (160 mm) and reduction ratio (40:1) may be functionally interchangeable — but the buyer must confirm the mounting flange pattern, keyway dimensions, and input shaft diameter against the original BOM before committing.