20:1 planetary gearbox — 60 mm frame, 44 N.m continuous
The Schneider Electric GBX0600200704F is a 60 mm diameter planetary gearbox with straight teeth, delivering a 20:1 reduction ratio. It's rated for 44 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 70 N.m under the same conditions. Efficiency sits at 94 %, and the gearbox is lubricated for life — no maintenance schedule for oil changes. The shaft output carries an IP54 rating, meaning it's protected against dust ingress and splashing water, but not submersion or high-pressure washdown.
Torque, backlash, and service life at rated speed
Continuous torque is 44 N.m, with a maximum torsional backlash of 20 arc.min — this is a standard-precision gearbox, not a zero-backlash unit for servo axes. Torsional rigidity is 2.5 N.m/arcmin, so under full continuous load you'll see about 17.6 arcmin of windup. Rated service life is 30,000 hours at 100 rpm and 30 °C ambient. At higher loads or temperatures, life shortens — the axial and radial force ratings drop when you push beyond the 30,000-hour envelope. Maximum axial force is 450 N at the 30,000-hour rating, 600 N if you accept 10,000-hour life. The housing is black anodized aluminium, shaft material is C45 steel.
Obsolete — sourcing for legacy installs
Schneider Electric has marked the GBX0600200704F as obsolete. This gearbox is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. For a critical spare on an existing machine, this is the exact drop-in replacement for the original GBX0600200704F. If you're designing a new line, the GBX series has been superseded — a different frame or ratio may be needed, and a board or bracket spin is likely.