Planetary gearbox — 9:1 reduction, 16.5 N.m continuous
The GBX0400091403F is a 40 mm diameter planetary gearbox from Schneider Electric's GBX series, delivering a 9:1 reduction ratio with a continuous output torque of 16.5 N.m at 100 rpm and 30 °C. Efficiency is 94 % at rated conditions, meaning roughly 6 % of input power is lost as heat — a typical figure for a single-stage planetary with straight teeth. The 9:1 ratio multiplies input torque by about nine while reducing output speed by the same factor; for a servo or stepper motor application, this lets the motor run closer to its efficient speed range while the gearbox provides the torque at the load.
Load ratings and service life
Maximum output torque is 26 N.m at 100 rpm and 30 °C — this is the peak overload limit, not the continuous rating. Rated service life is 30,000 hours at 100 rpm and 30 °C. If the application runs at higher speed or ambient temperature, the life derates; the maximum axial force (200 N) and radial force (200 N) also drop with longer service targets — 160 N each for the 30,000-hour case. The gearbox is lubricated for life, so no periodic grease changes are needed — a maintenance advantage in sealed or hard-to-access installations.
Mechanical and environmental specs
Shaft output is IP54, meaning the output seal resists dust ingress and splashing water — suitable for washdown-adjacent areas but not for submerged or high-pressure spray environments. Housing is black anodized aluminium (40 mm external diameter), and the shaft is C45 steel — a standard medium-carbon steel with good wear resistance for gearbox shafts. Maximum torsional backlash is 28 arc.min — this is the angular play between input and output when reversing direction. For positioning applications requiring less than half a degree of lost motion, a lower-backlash gearbox would be needed. Noise level is 55 dB at 1 m under no-load conditions — quiet enough for office-adjacent or lab environments, though load may increase the acoustic output.
Lifecycle and sourcing — obsolete, quoted to order
Available through independent distribution channels; quantities are confirmed at RFQ. Compliance documentation (RoHS, REACH, CE) would have accompanied the original production; for obsolete parts, the manufacturer typically does not reissue declarations. Confirm documentation requirements at quote time.