12:1 planetary — 44 Nm continuous, 70 Nm peak
The GBX0600121003F is a 60 mm-diameter planetary gearbox with a 12:1 reduction ratio. Continuous output torque is 44 N.m at 100 rpm; maximum output torque hits 70 N.m at the same speed — the headroom covers intermittent overloads like start-up or reversing loads on a conveyor or indexing table. Rated service life is 30,000 hours at 100 rpm and 30 °C ambient — that's about 3.4 years of continuous 24/7 operation before the lubricant degrades. The gearbox ships lubricated for life, so no oil-change interval to schedule.
Load ratings — axial and radial limits
Maximum axial force Fa is 450 N at 100 rpm for the full 30,000-hour service life, or 600 N if you accept a shorter 10,000-hour life. Radial force Fr at mid-shaft is 340 N for 30,000 hours or 500 N for 10,000 hours — the overhung load on the output shaft determines which column you design to. Torsional rigidity is 2.5 N.m/arcmin, and maximum torsional backlash is 20 arc.min — the angular play in the straight-tooth mesh. For positioning axes that reverse direction, that backlash accumulates in the total lost motion budget.
Obsolete — sourcing through independent channels
Schneider Electric lists this gearbox as obsolete. The part is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. Efficiency is 94 %, noise level 58 dB at 1 m no-load, and the shaft output seal carries IP54 protection — enough for dry indoor environments but not washdown. Operating range is -25 to 90 °C ambient.