15:1 reduction in a 120 mm planetary footprint
The GBX1200150844D is a planetary gearbox from Schneider Electric's GBX line with a 15:1 reduction ratio packed into a 120 mm gearbox external diameter, so it drops into the standard Lexium servo footprint without redrilling the panel. Continuous output torque is 230 N·m and maximum output torque is 368 N·m — the continuous figure is the one to size against for steady conveyor or mixer duty, while the 368 N·m ceiling covers the acceleration spike at start-up and under shock load. Torsional backlash sits at 12 arc.min maximum, and the unit is lubricated for life, which is what the route guys want to hear — no re-greasing schedule to track on the maintenance planner.
Service life and load envelope at 30 °C
Service life is 30000 h at 100 rpm with the gearbox held at 30 °C — at that same 100 rpm the housing absorbs 1500 N radial force applied at mid-distance from the output shaft, or 2100 N axial, before the bearing life curves start to bite. Push the same shaft to 2000 N radial or 2800 N axial and the service life window drops to 10000 h — that's the short-duty envelope for indexing tables and other stop-start applications where the radial load spikes past the continuous figure. Torsional rigidity is 13 N·m/arcmin, so under load the output shaft stays where the controller told it to be — relevant for any application where position hold under torque matters more than peak throughput.
Where it lives on the equipment
The shaft output carries an IP54 seal — splash-resistant rather than washdown-rated, so it belongs inside a cabinet or on a covered machine, not out in the wash-down bay. The black anodized aluminium housing sheds heat and resists corrosion in normal plant air. Ambient operating range is -25...90 °C and mounting position is any orientation, which gives the installer freedom to clock the unit for the cleanest cable run without re-engineering the bracket. Noise level is 65 dB at 1 m on no-load, and efficiency sits at 94 % — at 230 N·m continuous that's only a handful of watts lost as heat per stage, which is why the housing stays cool enough to run to 90 °C ambient without derating.
Build details and what they tell you
Gear box type is straight teeth — quiet, efficient, and tolerant of brief overload, but it does not backdrive like a helical or worm set, so vertical-axis applications need a brake on the motor side. Shaft material is C 45 medium-carbon steel and the moment of inertia is 2.53 g·cm² at the input — low enough that high acceleration commands don't fight the gearbox inertia on each move profile.
Sourcing and lifecycle posture
Quoted to order through independent distribution for production quantities; lead time and price breaks confirmed at RFQ.