Planetary gearbox, 40:1 reduction, 70 N.m peak
The GBX0600400403D is a straight-tooth planetary gearbox from Schneider Electric's GBX family, sized for a 60 mm housing diameter and a 40:1 reduction ratio. It delivers a maximum output torque of 70 N.m and a continuous output torque of 40 N.m, making it suited for indexing, positioning, and moderate-load servo or stepper applications where compact inline mounting is required. Efficiency is listed at 94 % — the straight-tooth profile and planetary layout keep losses low at rated speed, though the 25 arc.min maximum torsional backlash means this gearbox is not intended for precision reversing or zero-backlash cam-follower duty. The 2.5 N.m/arcmin torsional rigidity provides reasonable stiffness for the torque class.
Load ratings and service life at 100 rpm
Service life is specified as 30 000 hours at 100 rpm and 30 °C ambient. At that speed the maximum axial force Fa is 450 N and the maximum radial force Fr is 340 N (applied at mid-distance on the output shaft). If the application requires 10 000 hours life at 100 rpm, the allowable axial force rises to 600 N and radial force to 500 N — useful for intermittent overload cycles. The gearbox is lubricated for life and sealed to IP54 at the shaft output — adequate for dry indoor environments but not washdown or outdoor exposure. The black anodised aluminium housing and C 45 steel shaft are standard for this class; mounting position is unrestricted. Ambient temperature range spans -25 to 90 °C. The moment of inertia is 0.064 g.cm², low enough that a small servo drive can accelerate the reflected load without excessive torque margin.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0600400403D as obsolete.