160 mm planetary gearbox — 8:1 ratio, 450 N.m continuous
The GBX1600080702F is a 160 mm-diameter planetary gearbox from Schneider Electric's GBX series, with straight-cut teeth and a reduction ratio of 8:1. Continuous output torque is 450 N.m at 100 rpm and 30 °C; the maximum burst torque reaches 720 N.m under the same conditions — the continuous figure governs the duty cycle for sizing. Rated efficiency is 94 %, so about 6 % of the input power dissipates as heat inside the housing — relevant for thermal management in a closed driveline.
Torque, backlash, and load limits that drive selection
Maximum torsional backlash is 6 arc.min — this sets the positioning repeatability floor in servo or indexing applications; a lower-backlash gearbox would be needed for sub-arcminute precision. Torsional rigidity is 38 N.m/arcmin — the gearbox wind-up under load is predictable and can be compensated in the servo loop if the application requires it. Maximum axial force on the output shaft is 6000 N for a 30000-hour life at 100 rpm and 30 °C, or 8000 N for a 10000-hour life. Radial force limits are 4200 N (30000 h) and 6000 N (10000 h), applied at mid-span of the output shaft. Service life is rated at 30000 hours at 100 rpm and 30 °C under continuous torque — this is the L10 life, not the wear-out point, but it sets the scheduled replacement interval for the driveline.
Mounting, environment, and maintenance constraints
Housing is black anodized aluminium with a 160 mm external diameter; the output shaft is C45 steel. The shaft output seal carries an IP54 rating — the housing itself is not sealed, so the gearbox is splash-resistant at the shaft exit but not submersible or washdown-rated. The gearbox is lubricated for life — no oil-change ports or grease fittings, so the sealed-for-life design means the unit is replaced at end of life, not serviced. Noise level is 70 dB at 1 m under no-load conditions — this is the acoustic baseline; under load the gear mesh noise will increase, particularly with straight-cut teeth.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX1600080702F as obsolete. This gearbox is available through independent surplus and broker channels.