8:1 planetary, 450 N.m continuous — what the ratings mean
The GBX1600080554F is a straight-tooth planetary gearbox from Schneider's GBX series, 160 mm outer diameter, with an 8:1 reduction ratio. Continuous output torque is 450 N.m at 100 rpm and 30 °C; peak (maximum) output torque reaches 720 N.m under the same conditions. That 450 N.m continuous rating is the number to size against — the gearbox will deliver that torque for its full 30,000-hour service life at rated speed and temperature. The 720 N.m peak covers acceleration and emergency stops, not sustained duty. Torsional backlash is 6 arc.min maximum, which is standard precision for positioning applications that don't need zero-backlash — think indexing tables, conveyor drives, and pick-and-place axes where the load doesn't reverse under full torque.
Efficiency, noise, and mechanical limits
Rated 94 % efficiency — typical for a single-stage planetary with straight teeth. The 6 % loss goes into heat; at 450 N.m and 100 rpm that's about 280 W of thermal load the housing must shed. The black anodized aluminium body (160 mm OD) handles that in free air, but in a confined cabinet or at elevated ambient, the service life derates. Noise level is 70 dB at 1 m, no-load — that's conversational-level sound. Under load the straight-tooth mesh will be louder than helical, but for most industrial floors 70 dB is well within acceptable limits. Maximum radial force (Fr) on the output shaft is 4200 N for the full 30,000-hour life at 100 rpm, or 6000 N if you accept a 10,000-hour life. Axial force (Fa) limits are 6000 N for 30,000 hours and 8000 N for 10,000 hours. These are applied at mid-span of the output shaft — overhung loads reduce the allowable force. Shaft output seal is IP54 — splash-proof but not washdown. The shaft is C45 carbon steel; the housing is black anodized aluminium. The gearbox is lubricated for life, so no maintenance schedule for oil changes.
Obsolete — sourcing reality
Schneider has marked the GBX1600080554F as obsolete. This gearbox is available through independent surplus and excess channels — new-in-box, sealed stock from cancelled orders and overruns.