What this gearbox delivers on a motion axis
The GBX1200151404F is a 120 mm-diameter planetary gearbox with a 15:1 reduction ratio, built for servo or stepper motor output stages where compact torque multiplication is needed. Continuous output torque is 230 N.m at 100 rpm and 30 °C — that is the figure to size against, not the 368 N.m maximum which assumes intermittent duty and lower ambient. Efficiency runs at 94 %, so the thermal load on the motor and coupling stays predictable; the gearbox is lubricated for life and needs no maintenance schedule.
Torque, backlash, and force limits — the real selection numbers
Maximum torsional backlash is 12 arc-min, with a torsional rigidity of 13 N.m/arcmin — this combination matters for positioning accuracy in indexing or pick-and-place axes where windup under load must be predictable. Rated service life is 30,000 hours at 100 rpm and 30 °C, which covers most continuous-running applications for several years before rebuild consideration. Maximum axial force on the output shaft is 2100 N at 100 rpm for the full 30,000-hour life, or 2800 N if you accept a 10,000-hour life — plan overhung loads accordingly. Maximum radial force is 1500 N at mid-shaft for 30,000 hours, or 2000 N for 10,000 hours — belt or chain drives need to stay within these limits to avoid bearing overload.
Sourcing an obsolete planetary gearbox
No official successor or pin-compatible replacement is recorded from Schneider — a functional replacement would require checking the mounting flange, shaft diameter, and ratio against current GBX-series or third-party planetary gearboxes.
Environmental fit and integration notes
The shaft output seal carries IP54 protection — suitable for indoor environments with dust and splash, but not washdown or submersion. Operating ambient range is -25 to 90 °C, so it handles warm cabinet interiors or cold storage areas without derating the lubricant. Noise level at 1 m under no-load is 65 dB — roughly the hum of a small conveyor drive; straight-cut teeth are inherently noisier than helical, so factor that into acoustic specs for operator areas.