Planetary gearbox, 80 mm, 9:1 — what the torque ratings mean
The GBX0800091004F is a straight-tooth planetary gearbox from Schneider's GBX series, 80 mm outer diameter, with a 9:1 reduction ratio. The continuous output torque is 130 N.m at 100 rpm and 30 °C; the maximum output torque reaches 208 N.m under the same conditions.
Efficiency, noise, and service life — the real-world envelope
Rated 94% efficiency means about 6% of the input power becomes heat in the gearbox — for a 130 N.m output at 100 rpm (roughly 1.36 kW mechanical), that's about 82 W of heat to manage within the 80 mm housing. The noise level is 60 dB at 1 m, no-load — quiet enough for packaging or lab environments where operator exposure is a concern. Service life is 30,000 hours at 100 rpm and 30 °C. The axial force limit is 1200 N for 10,000 hours, dropping to 900 N for the full 30,000-hour life. Radial force at mid-shaft is 950 N for 10,000 hours, 650 N for 30,000 hours. These derating curves matter when the output shaft sees belt tension or overhung loads — the 30,000-hour radial limit is the one to design to for a maintenance-free run.
Backlash, protection, and lubrication — fit constraints
Maximum torsional backlash is 14 arcmin — that's the angular play between input and output under reversing load. For positioning applications that need better than 0.23° repeatability, this gearbox needs a preloaded or low-backlash variant. The shaft output seal is IP54, so it handles dust and splash but not washdown; the housing is black anodized aluminium, shaft is C45 steel. The gearbox is lubricated for life — no oil changes, no maintenance interval. That simplifies MRO planning but means the lubricant grade is fixed at the factory; if the application runs near the 90 °C ceiling continuously, the grease life may shorten below the 30,000-hour rating.
Lifecycle reality — obsolete, sourced through independent channels
Schneider Electric lists the GBX0800091004F as obsolete. For a line-down or BOM-fill situation, this part is sourced through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. The 80 mm frame size and 9:1 ratio are common in the GBX family, so a parametric match (same diameter, ratio, and torque class) from the current GBX catalog may be the faster path for new builds.