8:1 planetary — 120 N.m continuous, 192 N.m peak
The GBX1200081403F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for a 120 mm output diameter. Its 8:1 reduction ratio delivers 120 N.m continuous torque at 100 rpm and 30 °C, with a maximum intermittent rating of 192 N.m at the same speed and temperature. Efficiency sits at 94 %, meaning about 6 % of input power is lost as heat through the gear mesh — typical for a single-stage planetary with straight teeth. The 8 arc.min maximum torsional backlash is standard for precision positioning in indexing or pick-and-place axes where cumulative error matters.
Rated life and load limits
Service life is specified at 30,000 hours at 100 rpm and 30 °C — the gearbox is lubricated for life, so no field re-greasing interval. At the same speed and temperature, maximum axial force (Fa) is 2100 N for the full 30,000-hour life, or 2800 N if you accept a 10,000-hour service window. Radial force (Fr) applied at mid-span on the output shaft is 1500 N for 30,000 hours, 2000 N for 10,000 hours. The shaft output seal is rated IP54 — fine for dry indoor environments but not washdown. Housing is black anodized aluminium; the shaft is C45 steel. Operating ambient range is -25 to 90 °C.
Obsolete — sourced through independent channels
Schneider Electric lists the GBX1200081403F as obsolete. This gearbox is available through independent surplus and broker channels — quantities are lot-specific, and condition (new-in-box, sealed) is confirmed at RFQ time. A functional replacement would require a different frame size or ratio — a mechanical re-design.