Torque and duty ratings for the BOM line
The GBX1200090552F is a planetary gearbox with a 9:1 reduction ratio, delivering a maximum output torque of 336 N.m at 100 rpm and a continuous output torque of 210 N.m at the same speed — both rated at 30 °C ambient. That continuous figure is the one to size against for steady-state conveyor or indexing duty; the maximum figure covers short-duration peak loads. Efficiency is listed at 94 %, which means about 6 % of input power is lost as heat through the gear mesh — relevant for thermal budgeting in a sealed enclosure. Noise level is 65 dB at 1 m, no-load — a moderate figure for a straight-tooth planetary; expect a few dB higher under full load.
Mechanical limits and service life
Rated service life is 30,000 hours at 100 rpm and 30 °C — a solid baseline for continuous-duty applications. The gearbox is lubricated for life, so no maintenance schedule for oil changes. Maximum axial force on the output shaft is 2100 N at 100 rpm for the 30,000-hour life target, or 2800 N if you accept a shorter 10,000-hour life. Maximum radial force is 1500 N (30,000 h) or 2000 N (10,000 h), applied at mid-distance from the output shaft. These are the limits that govern bearing selection in the driven mechanism. Torsional rigidity is 13 N.m/arcmin — a measure of how much the shaft twists under load; lower is stiffer. Maximum torsional backlash is 12 arc.min, which is typical for a standard-precision planetary and matters for positioning accuracy in reversing applications.
Environmental fit and mounting
The gearbox has a 120 mm external diameter, black anodized aluminium housing, and a C45 steel output shaft. IP54 protection at the shaft output means it resists dust ingress and splashing water — suitable for factory-floor environments but not washdown zones.
Lifecycle reality — obsolete, sourced to order
Schneider Electric lists this part as obsolete.