Planetary gearbox, 80 mm, 12:1 reduction
The GBX0800120552F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 80 mm outer diameter, with a 12:1 reduction ratio. Continuous output torque is 120 N·m at 100 rpm, with a maximum intermittent torque of 192 N·m at the same speed — the 30,000-hour service life rating applies at the continuous figure. Efficiency is listed at 94 %, and the torsional backlash is under 14 arcmin — typical for a precision planetary stage at this price point.
Load ratings and mechanical limits
Maximum axial force on the output shaft is 1200 N for a 10,000-hour life at 100 rpm and 30 °C, derating to 900 N for the full 30,000-hour service life. Maximum radial force applied at mid-span on the output shaft is 950 N for 10,000 hours, dropping to 650 N for 30,000 hours — both at 100 rpm and 30 °C. Torsional rigidity is 6.5 N·m/arcmin, meaning the shaft twists 1 arcminute per 6.5 N·m of applied torque — this stiffness figure governs positioning accuracy under load in indexing applications.
Environmental and integration specs
The housing is black anodised aluminium with a C45 steel output shaft — the shaft output seal carries an IP54 rating, so the gearbox handles dust and splashing water but not pressurised washdown. Noise level at 1 m under no-load is 60 dB — roughly the hum of a quiet office, so audible in a panel environment but not intrusive.
Obsolete — sourcing through independent channels
Available through independent surplus and broker channels.