What this planetary gearbox delivers
The GBX0400080553F is a 40 mm-diameter planetary gearbox with straight teeth, an 8:1 reduction ratio, and 94 % efficiency — the kind of numbers that tell you most of the input power reaches the output shaft, not lost as heat. Maximum output torque is 10 N·m (88.5 lbf·in) at 100 rpm and 30 °C, with a service life of 30 000 hours under those conditions. At the same speed and temperature, the rated axial force (Fa) is 200 N for a 10 000-hour life, dropping to 160 N for the full 30 000-hour window — same derating applies to radial force (Fr) applied at mid-span on the output shaft. Torsional backlash is 30 arc-min, and torsional rigidity is 1 N·m/arcmin — that backlash figure matters if you're positioning a load that reverses direction; the lost motion eats into repeatability. For a pick-and-place or indexing axis, that's the spec to check against your accuracy budget.
Mounting and environmental fit
The housing is black anodised aluminium, shaft material is C 45 steel, and the shaft-output seal is rated IP54 — splash-resistant but not washdown. Lubricated for life — no maintenance port, no re-grease schedule. That's one less line item on the PM checklist, but it also means the gearbox is sealed; if the oil seal goes, replacement is the only fix. Noise level is 55 dB at 1 m, no-load — about as loud as a quiet office printer. Under load the figure will climb, but the straight-tooth planetary design tends to be noisier than helical; if the application is near an operator station, budget for an enclosure or accept the whine.
Lifecycle reality — obsolete, but sourced
Schneider Electric lists the GBX0400080553F as obsolete. No official successor or cross-reference is recorded — this is a legacy part, not a current catalog item. Available through independent surplus and broker channels. If you have a BOM line that calls out this exact order code, we can source it — but there is no factory stock or lead-time guarantee.