What the 5:1 reduction and 40 N.m torque mean for your axis
The GBX0600051402F is a 60 mm-diameter planetary gearbox with a 5:1 reduction ratio, delivering a continuous output torque of 40 N.m at 100 rpm and 30 °C ambient. That torque rating is the figure to size against your load's duty cycle — the maximum output torque of 64 N.m is a transient peak, not a continuous rating. Efficiency sits at 94 %, which means about 6 % of the input power is lost as heat through the straight-tooth mesh. For a servo or stepper-driven axis, that thermal loss stays inside the gearbox housing — the black anodized aluminium body dissipates it, but a tightly enclosed mounting may need a derating check at the upper end of the -25 to 90 °C operating range. Maximum torsional backlash is 16 arc.min — this is a standard-precision gearbox, not a zero-backlash unit. If your application indexes or reverses direction under load, that 16 arc.min of lost motion at the output must be accounted for in the positioning budget.
Lifecycle reality — obsolete, sourced through independent channels
For a line-down spare or a BOM that already carries this gearbox, the practical path is a quoted-to-order RFQ against the specific quantity needed.
Mechanical limits that govern the mounting
The shaft output carries an IP54 rating — protected against dust ingress and splashing water, but not submersion. The C 45 steel output shaft handles a maximum axial force of 450 N at 100 rpm over the 30,000-hour service life, and a maximum radial force of 340 N when applied at mid-distance from the shaft. Exceed those loads and the bearing life drops below the rated 30,000 hours. Noise level is 58 dB at 1 m under no-load conditions — that is the gear mesh whine from the straight teeth, not a loaded measurement. In a quiet lab or cleanroom environment, that figure may be audible; in a typical machine hall it blends into the background.