Planetary gearbox for servo motion — 40 mm frame, 16:1 reduction
The GBX0400160572G is a 40 mm-diameter planetary gearbox with straight-cut teeth and a 16:1 reduction ratio, designed to match a servo motor output for precision motion control. Continuous output torque is 20 N.m at 100 rpm at 30 °C, with a maximum intermittent torque of 32 N.m at the same speed and temperature — the margin covers acceleration peaks and short overloads. Rated service life is 30,000 hours at 100 rpm and 30 °C, and the unit is lubricated for life — no scheduled oil changes in the field. Torsional rigidity is 1.1 N.m/arcmin, and maximum torsional backlash is 28 arc.min — the straight-tooth design trades some backlash for higher torque density compared to helical planetary stages.
Sourcing reality — obsolete, sourced through independent channels
The part is available through independent surplus and broker channels; quantities and condition are confirmed at RFQ.
Mechanical ratings that govern the fit
Maximum axial force on the output shaft is 200 N at 100 rpm for a 10,000-hour life, or 160 N for the full 30,000-hour rating at 30 °C. Maximum radial force is 200 N at 100 rpm (10,000-hour life) or 160 N (30,000-hour life), applied at mid-distance from the output shaft at 30 °C. The shaft output seal is rated IP54 — suitable for dry indoor environments but not washdown or outdoor exposure.
Efficiency and noise in the drive train
Listed efficiency is 94 % — typical for a single-stage planetary with straight teeth at this ratio. Noise level is 55 dB at 1 m, no-load, which is quiet enough for most machine-tool and packaging-line environments without additional acoustic enclosures. Moment of inertia is 0.022 g.cm² — low enough that the reflected inertia at the motor shaft stays manageable for servo tuning.