What this 40:1 planetary box delivers on a servo line
The GBX1600400554F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for a 160 mm output stage and a 40:1 reduction ratio. It delivers 700 N.m continuous output torque at 100 rpm, with a peak of 1120 N.m available for acceleration transients. The 10 arcmin maximum torsional backlash suits positioning loops where the load reversal error budget is in the single-arcminute range — typical for indexing tables or pick-and-place axes that don't need a zero-backlash stage.
Torque, life, and the thermal envelope
Rated service life is 30000 hours at 100 rpm and 30 °C ambient, with the gearbox lubricated for life — no oil-change interval to schedule. The operating ambient range is -25 to 90 °C, so it handles cabinet heat or cold-start conditions without derating the life figure at the low end. Maximum radial force on the output shaft is 4200 N at mid-span for the 30000-hour life target, climbing to 6000 N if you accept a 10000-hour service window. Axial loads are 6000 N and 8000 N respectively. These limits govern overhung load capacity on belt or chain drives. Torsional rigidity is 41 N.m/arcmin — the wind-up under full continuous torque is about 17 arcmin, which the servo loop's position error budget must absorb.
Sourcing a discontinued GBX box
Schneider lists the GBX1600400554F as obsolete. Available through independent surplus and broker channels. Quantities are lot-specific — confirmed at RFQ against your BOM line. No pin-compatible direct replacement from Schneider's current catalog; a re-engineer to a different frame size or ratio is the path if new-production stock runs dry.