What this planetary gearbox delivers — and where it falls short
The GBX1600200553F is a 160 mm-diameter planetary gearbox with straight teeth and a 20:1 reduction ratio, built for applications needing high torque density in a compact footprint. Continuous output torque is 800 N.m at 100 rpm and 30 °C, with a maximum of 1280 N.m under the same conditions — enough for indexing tables, conveyor drives, or positioning axes that don't hammer the peak rating. Torsional rigidity sits at 41 N.m/arcmin, and maximum backlash is 10 arcmin — that's standard precision, not zero-backlash. If your servo loop needs under 5 arcmin, this box isn't the one.
Sourcing reality — obsolete, but findable
Schneider lists this gearbox as obsolete. No official successor is recorded — the GBX family has been superseded by newer planetary series with different mounting interfaces. Available through independent surplus and broker channels. Quantities are lot-specific; we quote against your BOM and confirm availability at RFQ. No stock-holding claim — this is a locate-and-quote line.
Load ratings that govern the fit
Maximum axial force Fa is 6000 N for the 30,000-hour service life at 100 rpm and 30 °C, or 8000 N if you accept a 10,000-hour life. Radial force Fr at mid-shaft is 4200 N for the longer life, 6000 N for the shorter. Service life is rated 30,000 hours at 100 rpm and 30 °C — that's about 3.4 years of continuous run. The box is lubricated for life, so no oil-change schedule, but when the grease degrades, the unit is a swap, not a service. Shaft output seal is IP54 — splash-proof, not washdown. The housing is black anodized aluminium, shaft material C45 steel. Ambient range is -25 to 90 °C, which covers most indoor industrial floors but not oven zones.
Efficiency and noise — what the numbers mean on the line
Efficiency is 94 % — typical for a single-stage planetary with straight teeth. That means 6 % of input power becomes heat; at full rated torque, plan for about 50 W of thermal dissipation through the housing. Noise level is 70 dB at 1 m, no-load — roughly the hum of a busy office. Under load, expect a few dB more; straight-tooth gears whine more than helical, so if acoustic specs are tight, budget for an enclosure.