What the GBX1600320842D is
The part is a straight-cut planetary gearbox in Schneider Electric's GBX series, with a 160 mm gearbox external diameter and a 32:1 reduction ratio sized for 800 N.m of continuous output torque — meaning the unit pre-stages a single motor input into a low-speed, high-torque shaft typical of servo-driven packaging lines, mixers and solar tracker drives, where the 94% efficiency at rated load keeps heat rejection low enough that the gearbox is lubricated for life across the listed 30000 h service interval at 100 rpm. The 160 mm OD frame is the dimensional key an installer matches to the mating servo or stepper — bore, pilot and bolt circle on the input flange and output face all derive from this frame size, and any mounting position is accepted thanks to the sealed oil-bath design.
Torque, backlash and torsional stiffness
Continuous output torque is 800 N.m and the maximum output torque is 1280 N.m — the peak figure covers short-duration overloads from acceleration or process jams, while the continuous figure is the load budget that should not be exceeded across the duty cycle. Maximum torsional backlash sits at 10 arc.min and torsional rigidity is 41 N.m/arcmin, which keeps wind-up small relative to the 800 N.m continuous rating — fine for mid-accuracy positioning where sub-arc-minute repeatability is not required, but worth verifying against the application's reversing-cycle tolerance. Moment of inertia is 6.36 g.cm² at the input, so the gearbox adds very little reflected inertia to the motor — useful on high-dynamic servo axes where excess inertia would push the drive into the regenerative braking envelope on every fast stop.
Loading envelope at rated speed
At 100 rpm and 30 °C the maximum axial load is 6000 N and the maximum radial load is 4200 N when referenced to a 30000 h service life — pushing either load to 8000 N or 6000 N respectively shortens the service life to 10000 h, so thermal profile and shaft loading have to be sized together, not independently. Ambient temperature for operation spans -25 to 90 °C; sites that push the upper end need the loading derated against the same curves, because the grease film at 90 °C does the same work as a colder unit under a reduced torque budget.
Build and operating environment
Straight-cut (spur) gear teeth, a C45 steel shaft and a black anodized aluminium housing — the spur geometry trades quieter helical meshes for a simpler, more robust tooth that handles shock loads from a stalled output well, while the anodized housing shrugs off the dust and incidental splash typical of a panel-side or machine-base install. The shaft output carries an IP54 rating, sealing against light splash and dust ingress — fine for general industrial interiors but not for outdoor tracker or washdown cells where IP65 or higher is the floor, so any deployment plan that puts the gearbox in a wet zone needs to verify the shaft seal separately. Noise level is 70 dB measured at 1 m under no-load — the spur-tooth geometry is audible compared with a helical unit of the same frame, so this gearbox belongs in machine rooms where the ambient floor is already above that mark.