Planetary gearbox for precision motion — 40:1 reduction, 230 N.m continuous
The GBX1200401402F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, with a 120 mm housing diameter and a 40:1 reduction ratio. It delivers 230 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 368 N.m under the same conditions. Rated efficiency is 94 %, meaning roughly 6 % of input power is lost as heat — a solid figure for a single-stage planetary. The 30000-hour service life at rated load (100 rpm, 30 °C) gives a maintenance interval that aligns with typical machine overhaul schedules.
Load ratings and mechanical limits
Torsional rigidity is 13 N.m/arcmin, which tells you how much the gear train winds up under load — stiffer means better positioning repeatability in servo applications. Maximum torsional backlash is 12 arcmin, a standard precision grade for general industrial motion. The output shaft can handle 2100 N axial force (Fa) and 1500 N radial force (Fr) at mid-span, both at 100 rpm for the full 30000-hour life. For shorter duty cycles (10000 hours), those limits rise to 2800 N axial and 2000 N radial — useful for intermittent overloads during acceleration or reversing.
Sourcing reality — obsolete, sourced to order
Schneider Electric lists the GBX1200401402F as obsolete. This gearbox is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. For a BOM freeze or replacement project, the key specs to match are the 40:1 ratio, 120 mm housing diameter, 230 N.m continuous torque, and the straight-tooth planetary design. The IP54 shaft output and lubricated-for-life maintenance are also defining characteristics.