The GBX0400040704F is a 40 mm-diameter planetary gearbox with a 4:1 reduction ratio. That ratio transforms input speed and torque: the output shaft turns one-quarter of the input speed while multiplying available torque by roughly the ratio minus efficiency losses. Continuous output torque is 15 N.m at 100 rpm and 30 °C; the maximum allowable torque at the same speed and temperature is 24 N.m. The continuous figure governs steady-state operation — the maximum figure covers occasional peak loads during acceleration or momentary overload. Maximum torsional backlash is 30 arcmin. That is the angular play between input and output when the direction reverses — relevant for positioning accuracy in pick-and-place or indexing axes where lost motion must be budgeted into the servo loop. Torsional rigidity is 1 N.m/arcmin — a measure of how much the gearbox winds up under load. At the continuous torque of 15 N.m, expect about 15 arcmin of elastic wind-up before the output moves.
Load capacity and service life — axial and radial limits
Maximum axial force (Fa) on the output shaft is 200 N at 100 rpm for a 10,000-hour service life at 30 °C, or 160 N for a 30,000-hour life. Maximum radial force (Fr) applied at mid-distance on the output shaft follows the same derating: 200 N for 10,000 hours, 160 N for 30,000 hours. Rated service life is 30,000 hours at 100 rpm and 30 °C. The gearbox is lubricated for life — no maintenance re-greasing interval. Shaft output protection is IP54 — sealed against dust ingress and splashing water, but not submersion. The housing is black anodized aluminium; the shaft is C45 steel. The noise level at 1 m under no-load conditions is 55 dB — comparable to a quiet office environment, not a hydraulic pump.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0400040704F as obsolete. Available through independent surplus and broker channels. The paperwork has to be clean — landed cost depends on the Incoterm and duty classification, not just the unit price.