Planetary gearbox — 80 mm frame, 100:1 reduction
The GBX0801000554F is a straight-tooth planetary gearbox in the 80 mm diameter frame, delivering a 100:1 reduction ratio. Continuous output torque is 120 N.m at 100 rpm and 30 °C, with a maximum intermittent torque of 192 N.m under the same conditions. Efficiency is rated at 94 %, with a noise floor of 60 dB at 1 m under no-load — the straight-tooth design trades some acoustic smoothness for higher torque density compared to helical planetary stages.
Load ratings and service life at 100 rpm
Rated service life is 30,000 hours at 100 rpm and 30 °C. The gearbox is lubricated for life — no oil-change interval in the field, which simplifies maintenance on a conveyor or indexing table where access is tight. Maximum axial force (Fa) is 1200 N for a 10,000-hour life, derating to 900 N for the full 30,000-hour target. Radial force (Fr) applied at mid-span on the output shaft is 950 N for 10,000 hours or 650 N for 30,000 hours. These are the limits that govern bearing life in overhung-load applications like belt drives or pinion meshes. Torsional rigidity is 6.3 N.m/arcmin, and maximum backlash is 16 arc.min — this is a standard-precision planetary stage, not a zero-backlash servo gearhead. For positioning axes that need repeatable stops within a few arc-minutes, this works; for high-gain servo loops, the backlash budget needs to be checked against the system's total compliance.
Sourcing reality — obsolete, quoted to order
Schneider Electric lists the GBX0801000554F as obsolete. The part is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. The black anodized aluminium housing carries an IP54 rating at the shaft output — suitable for dry indoor environments with occasional dust or splash, but not washdown. Shaft material is C45 steel. Ambient operating range is -25 to 90 °C.