Planetary gearbox for precision motion — 5:1 reduction, 450 N.m continuous
The GBX1600050551F is a straight-tooth planetary gearbox from Schneider Electric, sized for servo or stepper motor output stages where a 5:1 reduction is needed. Continuous output torque is 450 N.m at 100 rpm and 30 °C, with a maximum intermittent torque of 720 N.m under the same conditions — the gearbox can handle peak loads during acceleration or reversing without exceeding the mechanical limit. Efficiency is listed at 94 %, which is typical for a single-stage planetary with straight teeth. The 6 arc-min maximum torsional backlash suits positioning applications where lost motion must stay under 0.1° at the output — pick-and-place, indexing tables, or rotary axes with encoder feedback.
Mechanical ratings and load capacity at rated life
Service life is 30,000 hours at 100 rpm and 30 °C ambient. At that duty point the maximum axial force on the output shaft is 6000 N and the maximum radial force (applied at mid-span) is 4200 N. If the application requires a shorter life — 10,000 hours — the axial limit rises to 8000 N and the radial to 6000 N, giving headroom for higher overhung loads. Torsional rigidity is 38 N.m/arcmin, meaning the shaft wind-up under full continuous torque is about 11.8 arc-min — a figure to budget into the total system compliance if the load has significant inertia. The housing is black anodised aluminium, 160 mm diameter, with a C45 steel output shaft. Shaft output protection is IP54, so the gearbox is splash-resistant but not submersible. Operating ambient range is -25 to 90 °C, and the unit is lubricated for life — no maintenance re-greasing interval. Noise level at 1 m under no-load is 70 dB, which is moderate for a 160 mm planetary; expect a few dB higher under full torque.
Lifecycle status — obsolete, sourced through independent channels
Schneider Electric lists the GBX1600050551F as obsolete. The gearbox is available through independent surplus and broker channels; quantities are confirmed at RFQ and are lot-specific. For a BOM that requires this exact reduction ratio and frame size, the GBX1600050551F can be quoted to order.