15:1 planetary reduction in a 40 mm package
The GBX0400150402D is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for servo and stepper motor applications that need a 15:1 speed reduction in a compact 40 mm diameter housing. Rated for 18 N.m continuous output torque and 29 N.m maximum, it delivers 94% efficiency — meaning only 6% of input power is lost to friction and windage in the gear train.
Continuous output torque of 18 N.m is the sustained load the gearbox can transmit without overheating; the 29 N.m maximum torque covers peak acceleration or momentary overloads, but sustained operation above 18 N.m will shorten the 30,000-hour service life at 100 rpm and 30 °C. Maximum torsional backlash of 35 arc.minutes defines the lost motion between input and output when reversing direction — critical for positioning accuracy in pick-and-place or indexing axes where each reversal eats into the tolerance budget. Torsional rigidity of 1.1 N.m/arcmin tells you how much the gear train winds up under load: at 18 N.m continuous torque, expect about 16 arcminutes of elastic wind-up before the output shaft moves, which adds to the total positioning error. The IP54 rating on the shaft output means the gearbox is protected against dust ingress and splashing water — suitable for dry indoor machinery but not washdown environments. Operating ambient temperature range of -25 to 90 °C and factory lubrication for life eliminate the need for periodic oil changes, simplifying maintenance in enclosed machine frames.
Obsolete — sourcing through independent channels
Available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. No pin-compatible or dimensionally identical replacement from Schneider has been published.