What this gearbox delivers on a motion axis
The GBX1600251404F is a straight-tooth planetary gearbox from Schneider's GBX series, sized for servo or stepper motor output stages where you need a 25:1 reduction in a 160 mm diameter package. Continuous output torque is 700 Nm (6195.5 lbf.in) at 100 rpm and 30 °C, with a maximum intermittent rating of 1120 Nm (9912.8 lbf.in) under the same conditions — the gap between continuous and max tells you the thermal reserve for acceleration peaks. Torsional backlash is held to 10 arcmin maximum, which puts it in the standard-precision class for general positioning — not zero-backlash, but tight enough for most pick-and-place, indexing, and conveyor drives where the load doesn't reverse under high torque. Rated service life is 30,000 hours at 100 rpm and 30 °C, lubricated for life — no maintenance ports or regrease intervals to schedule, which simplifies the BOM for a sealed-for-life axis.
Mechanical limits that govern the mounting
Maximum radial force Fr at the midpoint of the output shaft is 4200 N for the full 30,000-hour life, or 6000 N if you accept a shorter 10,000-hour service window — the bearing life is the constraint, not the shaft yield. Maximum axial force Fa is 6000 N for the 30,000-hour target, stepping to 8000 N for the 10,000-hour case — axial loads from helical or bevel stages upstream need to stay inside these limits or the output bearing race spalls early. Torsional rigidity is 41 N.m/arcmin — this is the stiffness the servo loop sees; a low rigidity number adds compliance that shows up as settling time in the position error band.
Lifecycle reality — obsolete, sourced through surplus
Available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ time against the BOM line. Efficiency is 94 % at rated load — a number that matters when sizing the upstream motor for the total system power draw, especially on battery or limited-supply applications.