12:1 planetary — 44 N.m continuous, 70 N.m peak
The GBX0600120701D: This is a Schneider Electric GBX-series planetary gearbox with a 12:1 reduction ratio, 60 mm housing diameter, and straight-tooth gearing. The continuous output torque is 44 N.m, with a maximum intermittent rating of 70 N.m — the peak figure governs acceleration and emergency-stop loads, while the continuous number sets the steady-state duty cycle. Efficiency is listed at 94 %, which is typical for a single-stage planetary of this class — the remaining 6 % is thermal loss that must be dissipated through the black anodised aluminium housing.
Backlash and service life — what the numbers mean for fit
Maximum torsional backlash is 25 arcmin — this is the angular play at the output shaft under reversing load. For positioning axes that index in one direction, backlash is less critical; for bidirectional positioning or closed-loop servo applications, 25 arcmin is a standard-precision class, not a low-backlash grade. Service life is rated at 30,000 hours at 100 rpm and 30 °C ambient. The axial and radial force limits at that life point are 450 N (Fa) and 340 N (Fr) when applied at mid-distance on the output shaft. Push those forces to 600 N / 500 N and the service life drops to 10,000 hours — the trade-off is explicit in the ratings. The gearbox is lubricated for life and can be mounted in any position, which simplifies integration into tight machine frames. The shaft output carries an IP54 rating — protected against dust ingress and splashing water, but not washdown or submerged service.
Obsolete — sourcing through independent channels
Schneider Electric lists this GBX0600120701D as obsolete. No direct successor order code is recorded — the GBX series has been superseded by later planetary families with different mounting dimensions and backlash classes. Available through independent surplus and broker channels. This is not a stock-holding item — each order is sourced to match the required quantity.