What the torque and life ratings mean for your drive train
The GBX0600080573G is a 60 mm planetary gearbox with straight teeth and an 8:1 reduction ratio. Its continuous output torque is 18 N.m at 100 rpm at 30 °C, and it can handle a maximum output torque of 29 N.m at the same speed and temperature — the margin above continuous covers intermittent overloads during acceleration or reversing, not sustained running. Service life is rated 30,000 hours at 100 rpm and 30 °C — that is about 3.4 years of continuous 24/7 operation at that speed. If the application runs faster or hotter, the actual life shortens; the gearbox is lubricated for life, so no maintenance interval resets the clock. Efficiency is 96 %, which means 4 % of the input power is lost as heat inside the housing. At 18 N.m output and 100 rpm, that is roughly 7.5 W of heat to dissipate through the black anodized aluminium body — fine in free air, but if the gearbox is enclosed or near other heat sources, derate the duty cycle.
Sourcing this obsolete gearbox
Schneider Electric lists the GBX0600080573G as obsolete. No direct pin-compatible drop-in from Schneider's current GBX family is documented.
Mechanical limits and mounting flexibility
The shaft output seal is rated IP54 — protected against dust ingress and splashing water, but not submersion or high-pressure washdown. The gearbox can be mounted in any position, which simplifies integration into tight machine frames. Maximum axial force on the output shaft is 450 N at 100 rpm for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour life. Radial force limits are 340 N and 500 N respectively, with the force applied at mid-distance from the output shaft. Exceeding these loads accelerates bearing wear and reduces service life. Torsional rigidity is 2.3 N.m/arcmin — this tells you how much the gear train winds up under load. For positioning applications, the maximum torsional backlash of 16 arc.min is the lost motion on reversal; if your servo loop needs tighter than that, this straight-tooth gearbox may not hold the position window. Ambient temperature range for operation is -25 to 90 °C. The C 45 steel shaft and black anodized aluminium housing handle most factory floor environments, but sustained operation near the 90 °C ceiling will shorten the grease life and the 30,000-hour service interval.