What the 8:1 ratio and 6 Nm torque mean for your drive train
The GBX0400081404F is a 40 mm-diameter planetary gearbox with straight teeth, reducing input speed by a factor of 8:1 while multiplying torque. Its continuous output torque is 6 N.m at 100 rpm and 30 °C, with a maximum of 10 N.m under the same conditions. Efficiency is 94 %, meaning about 6 % of input power is lost as heat — typical for a single-stage planetary of this size. The noise level at 1 m, no-load, is 55 dB, which is quiet enough for lab or light industrial environments.
Mechanical limits and service life at rated conditions
Rated service life is 30000 hours at 100 rpm and 30 °C, with the gearbox lubricated for life — no maintenance re-greasing needed. Maximum torsional backlash is 30 arc.min, and torsional rigidity is 1 N.m/arcmin, so the gearbox has measurable windup under load. Axial and radial force limits depend on the target service life: at 10000 hours and 30 °C, maximum axial force (Fa) is 200 N and maximum radial force (Fr) is 200 N (applied at mid-distance on the output shaft). For the full 30000-hour life, both drop to 160 N. Shaft output is rated IP54, so it resists dust ingress and splashing water — suitable for enclosed or semi-protected installations. The housing is black anodized aluminium; the shaft is C45 steel.
Obsolete — sourcing through independent channels
Schneider Electric lists this gearbox as obsolete. The part is available through independent surplus and broker channels; quantities are confirmed at RFQ. Because it is a mechanical component with defined mounting dimensions (40 mm diameter, straight-tooth planetary), a functional replacement would need to match the 8:1 ratio, 6 N.m continuous torque, and the 30 arc.min backlash class — a board spin is not required, but the mating interface must be verified.