Planetary gearbox, 60 mm frame, 4:1 reduction
The GBX0600040702F is a 60 mm-diameter planetary gearbox with straight-cut teeth and a 4:1 reduction ratio. It delivers 38 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 61 N.m under the same conditions. Rated service life is 30,000 hours at nominal load and speed — the gearbox is lubricated for life, so no scheduled oil changes in the field.
Torque, backlash, and what they mean for your axis
Continuous torque of 38 N.m is the figure to size against your duty cycle — the 61 N.m peak rating covers acceleration and deceleration transients, not sustained load. Torsional rigidity is 2.3 N.m/arcmin, which means the shaft wind-up under full continuous torque is about 16.5 arcmin of twist. Maximum torsional backlash is 16 arcmin — this is the lost motion on reversal. For positioning axes that reverse direction under load, that 16 arcmin is the repeatability floor; a servo with encoder feedback can compensate, but an open-loop stepper cannot. Efficiency is rated at 96 % at full load, so the thermal loss is roughly 4 % of the transmitted power. For a 38 N.m output at 100 rpm (~400 W mechanical), that's about 16 W of heat dissipated through the aluminium housing.
Mounting, sealing, and environmental limits
Mounting position is unrestricted — the gearbox can be oriented any way. The shaft output seal is rated IP54, which means it's dust-protected and splash-resistant, but not suitable for pressurized washdown or submersion. Ambient operating range is -25 °C to +90 °C. The shaft material is C45 carbon steel; the housing is black anodized aluminium. Maximum axial force on the output shaft is 450 N for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour service interval. Maximum radial force applied at mid-shaft is 340 N for 30,000 hours, or 500 N for 10,000 hours — both at 100 rpm and 30 °C. If your application overhangs a pulley or sprocket on the output shaft, check the radial load against these limits.
Sourced through independent distribution channels. Same part, different passport — genuine is genuine regardless of which regional stock it ships from.