8:1 planetary gearbox — 50 N·m continuous, 80 N·m peak
The GBX0800081404F is a Schneider Electric planetary gearbox with straight-cut teeth, 80 mm housing diameter, and an 8:1 reduction ratio. It delivers 50 N·m continuous output torque at 100 rpm and 30 °C, with a peak capacity of 80 N·m under the same conditions. Rated service life is 30,000 hours at the continuous torque rating, with the gearbox lubricated for life — no scheduled oil changes. The shaft output seal carries an IP54 ingress rating, suitable for indoor installations where dust and splash exposure is limited.
Torque, backlash, and stiffness — the three numbers that size the drive train
Continuous torque of 50 N·m at 100 rpm defines the thermal limit for sustained duty. Peak torque of 80 N·m covers acceleration and intermittent overloads, but the service life drops if the duty cycle exceeds the continuous envelope — per the datasheet, the 30,000 h life figure is tied to the continuous rating. Maximum torsional backlash is 9 arcmin, and torsional rigidity is 6 N·m/arcmin. For indexing or positioning applications, the 9 arcmin figure is the total lost motion under reversing load — the stiffness value tells you how much the gearbox winds up under load before the output moves. Efficiency is listed at 94 %, meaning 6 % of the input power is lost as heat inside the housing. The black anodized aluminium housing (80 mm OD) dissipates that heat to the ambient air; the operating range is -25 to 90 °C.
Shaft loads and mounting constraints
Maximum axial force (Fa) is 1200 N for a 10,000 h life at 100 rpm and 30 °C, derated to 900 N for the full 30,000 h rating. Radial force (Fr) at mid-span on the output shaft is 950 N for 10,000 h, dropping to 650 N for 30,000 h. These limits govern overhung pulley or sprocket loads. The output shaft is C45 steel — a standard medium-carbon grade with good strength and wear resistance for keyed or clamped couplings.
Obsolete — sourcing through independent channels
Schneider Electric has classified the GBX0800081404F as obsolete. No official successor or cross-reference is recorded in the manufacturer's lifecycle documentation. For audit and compliance purposes, the datasheet records the following: planetary gearbox type, straight teeth, 8:1 ratio, 50 N·m continuous torque, 94 % efficiency, 9 arcmin backlash, IP54 shaft output, lubricated for life. These figures are the specification baseline for any replacement evaluation.