Planetary gearbox, 120 mm frame, 100:1 reduction
The GBX1201001001F is a straight-tooth planetary gearbox in a 120 mm diameter black anodized aluminium housing, delivering a 100:1 reduction ratio. 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, lubricated for life — no maintenance interval to schedule. The shaft output seal carries IP54 protection, adequate for dry indoor environments but not washdown.
Torque, backlash, and load ratings that govern the fit
Continuous torque of 260 N.m is the figure to size against your duty cycle — the 416 N.m maximum is for peak loads only, not sustained operation. Torsional rigidity is 12 N.m/arcmin, meaning the gearbox twists 1 arcminute per 12 N.m of applied torque; this stiffness matters for positioning accuracy in indexing or servo applications. Maximum torsional backlash is 14 arcmin — standard precision for a straight-tooth planetary. If your application requires less than 10 arcmin of lost motion, this gearbox will not hold position without compensation. Maximum radial force Fr is 1500 N at 100 rpm for the 30,000-hour life target, applied at mid-distance from the output shaft. Axial force Fa is 2100 N under the same conditions. Both derate at higher speeds — the 100 rpm reference is the baseline. Efficiency is 94 % at rated load — typical for a single-stage planetary with straight teeth. Noise level is 65 dB at 1 m, no-load, which is audible but not intrusive in a machine enclosure.
Obsolete — sourced through independent channels
Schneider Electric lists the GBX1201001001F as obsolete. The part is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. For a BOM freeze or line-down replacement, the closest functional match would be a current-production planetary gearbox in the same 120 mm frame size and 100:1 ratio from the GBX family or a compatible series — confirm the input shaft diameter, mounting flange, and keyway dimensions before substituting.