8:1 planetary reduction for servo and stepper applications
The GBX0600080701F is a 60 mm-diameter planetary gearbox with straight-cut teeth, delivering an 8:1 reduction ratio in a compact black anodized aluminium housing. Continuous output torque is 18 N.m at 100 rpm and 30 °C, with a maximum intermittent torque of 29 N.m under the same conditions — the continuous figure is the one to size against for duty cycles above 60 %. Rated efficiency of 96 % means the thermal load on the motor and gearbox stays low; at 18 N.m output the internal losses run about 0.75 W, negligible for most enclosures.
Backlash, rigidity, and positioning loop fit
Maximum torsional backlash is 16 arcmin — this is a standard-precision planetary, not a zero-backlash unit, so it suits indexing and conveyor positioning where the load doesn't reverse under tension. Torsional rigidity of 2.3 N.m/arcmin means the wind-up under full continuous torque is about 7.8 arcmin, which adds to the backlash budget in a closed-loop system. Moment of inertia reflected to the input is 0.065 g.cm² — low enough that a 400 W servo can accelerate the gearbox alone in under 5 ms without saturating the current loop.
Shaft loading and service life at rated speed
Maximum radial force at mid-shaft is 340 N for the 30,000-hour life target at 100 rpm and 30 °C; pushing to 500 N drops the L10 life to 10,000 hours. Axial force limit is 450 N for the 30,000-hour life, or 600 N if you accept 10,000-hour bearing life — belt-drive and helical-pinion inputs need to stay under these numbers. Service life is rated 30,000 hours at 100 rpm and 30 °C with the factory grease fill; the gearbox is lubricated for life, so no maintenance interval for oil changes.
Environmental sealing and mounting flexibility
Shaft output seal is rated IP54 — protects against dust ingress and splashing water, but not washdown or submersion; the motor-side interface relies on the motor's own seal. Mounting position is unrestricted — the gearbox can be installed shaft-up, shaft-down, or horizontally without derating, as long as the breather path (if any) is oriented per the motor manufacturer's note.