Torque ratings and duty cycle — continuous vs peak
The GBX0800151004F: The continuous output torque is 110 N.m at 100 rpm and 30 °C — this is the figure to size against your steady-state load, not the maximum. The maximum output torque of 176 N.m (1557.7 lbf.in) at the same speed and temperature covers occasional peak loads or acceleration transients, but sustained operation above the continuous rating shortens the 30,000-hour service life. The 15:1 reduction ratio and 94 % efficiency mean the input motor sees roughly 1/15th of the output torque plus a 6 % loss — budget that into the motor sizing. The straight-tooth gear set is noisier than helical but avoids axial thrust loads on the output bearings.
Load limits and bearing life — axial and radial forces
Maximum axial force Fa is 1200 N at 100 rpm for a 10,000-hour life, dropping to 900 N for the full 30,000-hour service life at 30 °C. Maximum 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 at the same conditions. Exceeding these limits accelerates bearing wear regardless of torque load. The housing is black anodized aluminium; the shaft is C45 steel.
Backlash and torsional stiffness for positioning accuracy
Maximum torsional backlash is 14 arc-minutes — this is the angular play between input and output when reversing direction. For indexing or positioning applications that require tighter repeatability, a lower-backlash gearbox (e.g. 5 arc-min or less) would be needed. Torsional rigidity is 6.5 N.m/arcmin, meaning the gearbox twists 1 arc-minute per 6.5 N.m of applied torque. The 80 mm outer diameter and 15:1 ratio fit a compact servo-drive train where the motor flange matches the input pattern. The gearbox is lubricated for life — no maintenance oil changes, which simplifies installation in sealed or hard-to-access locations.
Obsolete status and sourcing reality
Schneider Electric has marked this gearbox as obsolete. No official successor or cross-reference is recorded — the GBX series has been superseded by newer planetary families with different mounting interfaces and ratios. The 94 % efficiency, 60 dB noise level at 1 m no-load, and -25 to 90 °C ambient operating range remain the original specifications. For a line-down replacement or BOM freeze, the part is sourced through independent distribution against an RFQ. Confirm the motor flange pattern and output shaft dimensions against your existing installation before committing.