Planetary gearbox, 60 mm frame, 3:1 ratio
The GBX0600030551F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, with a 60 mm housing diameter and a 3:1 reduction ratio. This is the compact frame size — the one you reach for when the motor shaft is small and the load envelope is tight. Continuous output torque is 28 N.m (247.8 lbf.in) at 100 rpm and 30 °C, with a maximum intermittent torque of 45 N.m (398.3 lbf.in) at the same speed. The 16 arc.min maximum torsional backlash tells you this is a standard-precision gearbox — fine for positioning conveyors or indexing tables, not for a servo axis that needs under 5 arc.min.
Torque, life, and the limits that matter
Rated service life is 30,000 hours at 100 rpm and 30 °C — that's about 3.4 years of continuous running at that speed. The gearbox is lubricated for life, so no oil-change intervals to schedule. Axial and radial force limits drop with runtime. At the 30,000-hour target, maximum axial force Fa is 450 N and maximum radial force Fr is 340 N (applied at mid-shaft). If you can accept a 10,000-hour life, those numbers go up to 600 N axial and 500 N radial — useful for a short-life or maintenance-window application. Efficiency is listed at 94 %. That's typical for a single-stage planetary with straight teeth — the losses are mostly in the gear mesh and bearing drag, not the lubricant since it's grease-packed for life.
Environmental fit and mounting
The housing is black anodized aluminium with a shaft output rated IP54 — protected against dust ingress and splashing water, but not washdown. The shaft is C45 steel, a standard medium-carbon grade that handles keyway stress well. Noise level is 58 dB at 1 m, no-load — quiet enough to run near operators without hearing protection.
Obsolete — sourcing through independent channels
Schneider Electric lists this gearbox as obsolete. No official successor part number is recorded. Sourcing runs through independent distribution and surplus channels — quantities are lot-specific and confirmed at RFQ, not held on a shelf. If you have a BOM line that calls out the GBX0600030551F, the 60 mm frame diameter and 3:1 ratio are the critical fit dimensions. Confirm the output shaft configuration and mounting flange pattern against your existing installation before committing to a replacement.