Obsolete — what that means for procurement
The GBX0800400704F: Sourced through independent surplus and broker channels against an RFQ; availability and condition confirmed at quote time.
Planetary gearbox — 40:1 reduction, 110 N.m continuous
Straight-tooth planetary design with a 40:1 reduction ratio — sized for precision motion control where the motor runs faster and the gearbox steps it down to the load speed. Rated 110 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 176 N.m at the same speed and temperature. Efficiency is listed at 94 % — most of the input power reaches the output shaft, with the rest lost to gear mesh friction and windage. Service life rated 30,000 hours at 100 rpm and 30 °C, lubricated for life — no maintenance re-greasing interval to schedule.
Mounting and load ratings — what the numbers mean for fit
80 mm outer diameter housing in black anodized aluminium, with C45 steel shafting — the aluminium body sheds heat from the gear mesh, while the steel shafts handle the bearing loads. Shaft output seal rated IP54 — protects against dust ingress and splash from the output side, but the gearbox body itself is not fully sealed; mount it where the housing stays dry. Maximum axial force Fa is 1200 N at 100 rpm for 10,000 hours, derated to 900 N for the full 30,000-hour service life — the lower figure governs a continuous-duty application. Maximum radial force Fr is 950 N at 100 rpm for 10,000 hours, derated to 650 N for 30,000 hours — both measured at mid-span on the output shaft; overhung loads reduce the allowable radial force further. Torsional rigidity is 6.5 N.m/arcmin — the gearbox wind-up under load is predictable and repeatable, which matters for positioning accuracy in servo-driven indexing or pick-and-place. Maximum torsional backlash is 14 arcmin — this is the lost motion at the output when the input reverses direction; for applications requiring tighter positioning, a lower-backlash gearbox would be needed.
Noise and environment
Noise level measured at 60 dB at 1 m, no-load — roughly the sound of a quiet office or a low-hum motor; straight-tooth gears are inherently noisier than helical, so this figure is typical for the design. Ambient temperature range for operation is -25 to 90 °C — the lubricant and seal materials limit the low end; the aluminium housing and steel shafts handle the high end without derating the torque.