Planetary gearbox for servo duty cycles
The GBX1600401082D is a straight-tooth planetary gearbox in the GBX series, sized for servo-motor output stages where a 40:1 reduction and 700 N.m continuous torque are needed. The 160 mm housing diameter and black anodized aluminium body with C 45 steel shaft suit it for machine-tool axes, indexing tables, and pick-and-place gantries. Rated service life is 30000 hours at 100 rpm at 30 °C — the torque and axial/radial force ratings at that life point are the ones to design to, not the short-term maximums. At 100 rpm and 30 °C, maximum axial force Fa is 6000 N and maximum radial force Fr is 4200 N applied at mid-span on the output shaft. Torsional rigidity of 41 N.m/arcmin and maximum backlash of 10 arc.min define the positioning repeatability. For a servo loop with a 40:1 reduction, that backlash at the output translates to roughly 0.25 arc.min at the motor — acceptable for most positioning axes but worth confirming against the application's lost-motion budget.
Torque, efficiency, and thermal limits
Continuous output torque is 700 N.m; the maximum output torque of 1120 N.m is the peak overload ceiling, not a steady-state figure. The 94 % efficiency means about 6 % of the input power dissipates as heat inside the gearbox — at 700 N.m output and 40:1 reduction, that is roughly 45 W thermal load at typical servo speeds, which the aluminium housing and natural convection handle within the -25 to 90 °C ambient range. The gearbox is lubricated for life — no oil-change interval, no breather, no level check. That simplifies installation but means the internal grease fill is sealed for the 30000-hour service life; exceeding the rated temperature or duty cycle accelerates grease degradation and reduces life. Noise level is 70 dB at 1 m, no-load — typical for a straight-tooth planetary at this size. Under load the noise rises slightly; if the application is in a quiet environment (below 75 dB ambient), a helical-gear box would be quieter but is not this part.
Mounting and environmental sealing
Mounting position is any position — the lubrication system is a grease fill, not an oil sump, so there is no vent or oil-level constraint. The shaft output seal is rated IP54, meaning dust-protected and splash-resistant; the gearbox body itself is not sealed to IP54 (the housing is anodized aluminium), so the unit should not be washed down directly. Moment of inertia at the input is 5.28 g.cm² — low enough that a standard 400 W to 1 kW servo motor can accelerate the gearbox without significant torque penalty. The 160 mm external diameter and the output shaft dimensions match the GBX series mounting pattern; the input flange and shaft interface are sized for the corresponding motor adapter kit.
Sourcing and lifecycle status
Compliance documentation (RoHS, REACH) is standard for Schneider Electric GBX-series components. No UL or IEC listing is stated in the spec record for this gearbox — confirm with the project's certification requirements if the machine must carry a specific mark.