80:1 planetary reduction with 260 N.m continuous rating
The GBX1200801401F is a Schneider Electric planetary gearbox with straight teeth, delivering an 80:1 reduction ratio in a 120 mm diameter housing. Continuous output torque is 260 N.m at 100 rpm and 30 °C, with a maximum intermittent torque of 416 N.m under the same conditions. Rated service life is 30,000 hours at 100 rpm and 30 °C, and the unit is lubricated for life — no field maintenance on the oil charge. Efficiency is listed at 94 %, which means about 6 % of input power is lost as heat through the gear mesh and bearing drag.
Mechanical ratings that govern the application envelope
Torsional backlash is 14 arc.min maximum — this is the angular play between input and output when the direction reverses. For positioning axes that index and hold, that figure defines the repeatability floor; a lower-backlash gearbox would be needed for servo-grade accuracy. Torsional rigidity is 12 N.m/arcmin, meaning the shaft wind-up under load is predictable: at the continuous torque of 260 N.m, the elastic deflection is roughly 22 arcmin. Axial force capacity is 2100 N at 100 rpm for the 30,000-hour life target, and radial force at mid-span is 1500 N under the same duty. The shaft output seal is rated IP54 — dust-protected and splash-resistant, but not suitable for pressurized washdown.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX1200801401F as obsolete. This unit is available through independent surplus and broker channels.