Planetary gearbox — 32:1 reduction, 120 N.m continuous
The GBX0800321004F is a planetary gearbox from Schneider Electric's GBX series, with straight-cut teeth and a 32:1 reduction ratio. It delivers a continuous output torque of 120 N.m (1062.09 lbf.in) at 100 rpm and 30 °C, with a maximum intermittent torque of 192 N.m (1699.3 lbf.in) under the same conditions. The 80 mm diameter housing is black anodized aluminium, and the output shaft is C45 steel. The gearbox is lubricated for life and sealed to IP54 at the shaft output, making it suitable for integration into motion-control assemblies where periodic maintenance access is limited.
Mechanical ratings that govern the fit
Continuous torque of 120 N.m at 100 rpm is the rating for sustained duty — the gearbox is sized for applications where the load cycle stays within this envelope. The maximum torque figure of 192 N.m covers peak loads during acceleration or momentary overloads, but the datasheet conditions it at 100 rpm and 30 °C. Torsional rigidity is 6.5 N.m/arcmin, which defines the angular deflection under load. For a positioning axis, this stiffness figure, combined with the maximum backlash of 14 arc.min, sets the repeatability floor. The 30,000-hour service life at 100 rpm and 30 °C applies to the bearing and gear wear envelope. Maximum axial force (Fa) is 1200 N for a 10,000-hour life at 30 °C, derated to 900 N for the full 30,000-hour service life. Radial force (Fr) is 950 N for 10,000 hours, dropping to 650 N for 30,000 hours — both measured with the force applied at mid-distance on the output shaft. These limits govern overhung load capacity on the output. Efficiency is 94 %, which is typical for a single-stage planetary with straight teeth. The noise level of 60 dB at 1 m under no-load conditions provides a baseline for acoustic specification in noise-sensitive environments.
Obsolete — sourcing through independent channels
Schneider Electric has classified the GBX0800321004F as obsolete. The gearbox is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ.