Torque ratings and what they mean for sizing
The GBX1600401102G is a planetary gearbox with a 40:1 reduction ratio, meaning the output shaft turns once for every 40 input revolutions, multiplying the input torque by roughly that factor minus efficiency losses. Continuous output torque is 700 N.m at 100 rpm and 30 °C — this is the thermal limit for sustained duty; the gearbox can deliver 1120 N.m maximum under the same conditions, but only for intermittent or starting loads, not continuous operation. Efficiency is listed at 94 %, which means about 6 % of the input power is lost as heat inside the gearbox — a factor to account for in the thermal budget of the driven system, especially at higher speeds or in enclosed spaces.
Mechanical constraints — backlash, stiffness, and bearing loads
Maximum torsional backlash is 10 arc.min — this is the angular play between input and output when reversing direction; for positioning applications requiring less than 10 arc.min of lost motion, this gearbox will not hold the tolerance. Torsional rigidity is 41 N.m/arcmin, which defines how much the gearbox twists elastically under load — a stiffer gearbox (higher number) gives better positioning accuracy under varying torque. Maximum axial force on the output shaft is 6000 N for the full 30000-hour service life, or 8000 N if you accept a shorter 10000-hour life; radial force limits are 4200 N and 6000 N respectively, both measured at mid-span on the output shaft at 100 rpm.
Lifecycle status and sourcing reality
Available through independent surplus and broker channels; quantities are lot-specific and confirmed at the time of RFQ. No pin-compatible drop-in replacement exists from Schneider — a functional equivalent would need to match the 160 mm frame, 40:1 ratio, 700 N.m continuous torque, and 10 arc.min backlash.
Environmental and integration notes
Shaft output sealing is IP54 — splash-proof from the shaft side, but the gearbox body itself is not rated for washdown; the housing is black anodized aluminium (C 45 shaft steel), and the unit is lubricated for life with no maintenance interval. Noise level is 70 dB at 1 m under no-load conditions — a moderate acoustic signature; in a noise-sensitive environment, the straight-tooth design (vs. helical) may produce more audible whine under load.