Planetary gearbox, 80 mm frame, 25:1 reduction
The GBX0800250552F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 80 mm external diameter, with a 25:1 reduction ratio. It delivers 110 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 176 N.m under the same conditions. Rated service life is 30,000 hours at 100 rpm and 30 °C, with the gearbox lubricated for life — no maintenance interval for oil changes. The housing is black anodized aluminium; the output shaft is C45 steel.
Torque, backlash, and overhung load limits
Maximum torsional backlash is 14 arc-min, which positions this gearbox in the standard-precision category — suitable for general positioning and indexing where sub-arc-min repeatability is not required. Torsional rigidity is 6.5 N.m/arcmin, giving a predictable wind-up under load. Maximum radial force (Fr) at the output shaft mid-point is 650 N for the full 30,000-hour life, or 950 N if the application accepts a shorter 10,000-hour service interval. Maximum axial force (Fa) is 1200 N for 10,000 hours, derated to 900 N for the full life rating. Both figures are at 100 rpm and 30 °C. Efficiency is 94 % at rated load, and noise level is 60 dB at 1 m under no-load conditions — a quiet-running unit for indoor machinery where operator exposure is a concern.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX0800250552F as obsolete. No direct successor order code is listed in the manufacturer's records. The part is available through independent surplus and broker channels, with quantities confirmed at RFQ. For a BOM line that requires this exact 80 mm frame, 25:1 ratio, and 110 N.m continuous torque, the GBX0800250552F remains the correct fit — but the procurement path is via the secondary market, not factory-direct. Availability and pricing are quoted per request against the specific quantity.