Planetary gearbox for servo-driven axes
The GBX1600151385D is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for servo-motor output stages where a 15:1 reduction and 700 N.m continuous torque are needed. The 160 mm housing diameter and black anodized aluminium body keep it compact for mounting in any position on the machine frame. Efficiency sits at 94 %, so about 6 % of the input power is lost as heat through the gear mesh. That's typical for a single-stage planetary with straight teeth at this ratio — the heat stays manageable in the -25 to 90 °C operating range without external cooling.
Torque and load capacity at the output
Continuous output torque is 700 N.m; the maximum short-duration torque reaches 1120 N.m. The difference matters for sizing: the continuous figure governs the duty cycle, while the maximum covers acceleration peaks or occasional overloads. Radial and axial force limits are given at 100 rpm — 4200 N radial (30000 h life) or 6000 N (10000 h life), and 6000 N axial (30000 h) or 8000 N (10000 h). These are the hard limits for the output bearing when the load is applied at mid-span on the shaft. Torsional rigidity is 41 N.m/arcmin — that's the stiffness the gearbox presents to the servo loop. A stiffer gearbox means less windup under load and better positioning accuracy. Backlash is rated at 10 arcmin maximum, which is standard for a straight-tooth planetary without preloading.
Lifecycle and service conditions
Noise level is 70 dB at 1 m under no-load conditions. That's audible but not intrusive for a gearbox of this size — comparable to a quiet office or a running conveyor at distance. The shaft output seal carries an IP54 rating, meaning it's protected against dust ingress and splashing water, but not submersion.