The GBX0800081403F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 80 mm housing diameter, with an 8:1 reduction ratio. Planetary construction packs higher torque density than a parallel-shaft reducer of the same envelope — the load is shared across multiple planet gears. Continuous output torque is 50 N.m at 100 rpm and 30 °C ambient; maximum intermittent torque reaches 80 N.m under the same conditions. The 94 % efficiency means roughly 6 % of the input power is lost as heat — negligible for sizing the motor but relevant if the gearbox is enclosed in a small cabinet without airflow. Backlash is 9 arc.min maximum — a standard-precision grade suitable for indexing tables, conveyor drives, and general positioning where the load doesn't reverse direction under high frequency. For a servo axis requiring less than 5 arc.min, this unit would need a preloaded or low-backlash variant from the same family.
Load limits and service life — the numbers that govern the replacement interval
Rated service life is 30,000 hours at 100 rpm and 30 °C — that's about 3.4 years of continuous 24/7 operation. The gearbox is lubricated for life, so no re-greasing schedule; when the grease degrades past the 30,000-hour mark, the unit is replaced, not serviced. Maximum axial force on the output shaft is 1200 N for a 10,000-hour life target, derated to 900 N if you need the full 30,000 hours. Radial force at mid-span on the output shaft is 650 N for 30,000 hours, 950 N for 10,000 hours — these are the bearing limits, not the shaft bending strength, so an overhung load like a belt pulley needs a separate outboard bearing support. Torsional rigidity is 6 N.m per arcmin — meaning a steady 50 N.m load twists the output shaft about 8.3 arcmin before the gear teeth deflection is added. For a positioning axis, this stiffness plus the 9 arc.min backlash sets the total lost motion at roughly 17 arc.min under full continuous load.
Obsolete — sourcing reality and what replaces it
Schneider Electric lists the GBX0800081403F as obsolete. BPH, BSH) that use different mounting interfaces and shaft dimensions. No pin-compatible drop-in replacement exists from Schneider's current catalog — a mechanical re-design of the mounting bracket and coupling will be required to use a modern equivalent. The IP54 rating on the shaft output means the gearbox is splash-proof from the output side but not sealed for washdown — suitable for dry indoor environments like conveyor drives in a warehouse or packaging line, not for food-processing zones with high-pressure cleaning.