3:1 reduction, 115 N.m continuous — what the ratings mean
The GBX1200030554F is a straight-tooth planetary gearbox with a 3:1 reduction ratio, delivering 115 N.m continuous output torque at 100 rpm and 30 °C, with a maximum of 184 N.m for short-duration peaks. The 94 % efficiency means about 6 % of input power is lost as heat — typical for a single-stage planetary of this size. Backlash is rated at 8 arc.min maximum — standard precision for positioning where the load doesn't reverse direction under full torque. Torsional rigidity of 12 N.m/arcmin tells you the wind-up under load: at 115 N.m continuous, expect about 9.6 arc.min of elastic deflection in the gear train. Service life is 30,000 hours at rated load and speed — that's roughly 3.4 years of continuous 24/7 operation. The gearbox is lubricated for life, so no oil changes or regreasing intervals to schedule.
Sourcing reality — obsolete, sourced per RFQ
Schneider Electric lists this gearbox as obsolete. Available through independent surplus channels — quantities are lot-specific and confirmed at RFQ. The 120 mm diameter housing in black anodized aluminium, C45 steel shafts, and IP54 shaft output seal mean it was designed for a standard NEMA or metric flange mount — confirm the mounting pattern and shaft keyway dimensions against your existing bracket before committing the BOM line.