Form factor and reduction stack
The Schneider Electric GBX1600051083D is a 160 mm OD planetary gearbox from the GBX family with straight-cut gearing and a 5:1 reduction ratio, sized to drop into a servo or stepper drive train where the 720 N.m peak output is needed.
Torque envelope and torsional behaviour
Maximum output torque reaches 720 N.m on shock loads, while continuous output torque is rated at 450 N.m — the peak figure only governs short acceleration transients, and the continuous number is the one that should drive thermal sizing in the BOM line. Torsional rigidity is 38 N.m/arcmin and maximum torsional backlash is 6 arc.min, so the gearbox holds position tightly enough for indexing and conveyor-servo applications but is not a precision-ground strain-wave class.
Shaft loading versus service life
Maximum radial force Fr is 4200 N at 100 rpm for the 30,000 h service-life envelope and rises to 6000 N at 100 rpm if the application is limited to 10,000 h, with the load assumed at mid-distance from the output shaft. Maximum axial force Fa follows the same pattern: 6000 N at 100 rpm over 30,000 h, 8000 N at 100 rpm over 10,000 h — both figures at 30 °C, which is the reference temperature for the rated life. Service life is 30,000 h at 100 rpm and 30 °C, and the gearbox is lubricated for life, so there is no scheduled oil change to put on the maintenance route.
Efficiency, noise, and seal class
Mechanical efficiency is 96 %, which keeps continuous losses low enough that the gearbox does not need an external cooling fan in most panel-side installations. Noise level is 70 dB at 1 m under no-load — this is the unloaded figure, so a loaded, higher-rpm duty will read higher and should be evaluated against the workstation noise budget if the gearbox sits near an operator station. The shaft output is sealed to IP54, so the unit tolerates dust and light splash but is not a washdown-duty enclosure; if the gearbox sits on a food-and-bev line or outdoors, plan for an additional shaft seal or a shielded mount.
Operating envelope and drive-side fit
Ambient operating temperature is -25 to 90 °C, mounting position is unrestricted, and the C45 steel output shaft handles the standard keyed or shrink-fit coupling to the driven load. Moment of inertia at the input is 6.07 g.cm², which is a useful figure when sizing a servo amplifier — it adds directly to the reflected load and feeds the torque-acceleration calculation.
Lifecycle and sourcing posture
Independent distribution is the practical channel for the 5:1 GBX — quoted to order against the BOM with lead time and lot pricing confirmed at RFQ, and the 30,000 h service-life envelope lets a panel builder hold it as a planned MRO spare rather than a just-in-time part.