The GBX0400120702F is a 40 mm-diameter planetary gearbox with straight-cut teeth, a 12:1 reduction ratio, and a continuous output torque rating of 20 N.m at 100 rpm. Maximum intermittent torque reaches 32 N.m at the same speed — the margin matters if your application sees occasional overloads like a jam or a hard start. Efficiency is listed at 94 %, which is typical for a single-stage planetary of this size. The noise level of 55 dB at 1 m, no-load, is quiet enough for most production-floor environments — you won't hear it over a conveyor drive or a pump motor. Torsional backlash is rated at 28 arc-min maximum. That's a standard-precision grade — fine for positioning conveyors, indexing tables, or general motion axes, but not for a CNC ballscrew or a robot joint where you'd want sub-10 arc-min.
Sourcing reality — obsolete, but available through surplus channels
Schneider Electric lists the GBX0400120702F as obsolete. This gearbox is sourced through independent surplus and decommissioned-line channels. Quantities are lot-specific — confirmed at RFQ.
Mechanical limits — axial and radial load capacity
Maximum axial force (Fa) is 200 N at 100 rpm for a 10,000-hour life at 30 °C, derating to 160 N for a 30,000-hour target. Radial force (Fr) follows the same curve: 200 N at 10,000 hours, 160 N at 30,000 hours, with the load applied at mid-span on the output shaft. The shaft is C45 steel, the housing is black anodized aluminium, and the IP54 rating on the shaft output means it keeps dust and splashing water out — fine for a dry indoor machine, but not for washdown. The gearbox is lubricated for life, so no maintenance schedule for oil changes. That covers most indoor industrial environments, but if your enclosure sits next to a furnace or in a freezer, check the thermal margin against the continuous torque derating.