25:1 planetary reduction, 110 N.m continuous — the working envelope
The GBX0800251403F is a Schneider Electric planetary gearbox with a 25:1 reduction ratio, built around an 80 mm diameter black anodized aluminium housing. Straight-cut teeth keep the design compact and efficient, hitting 94 % efficiency at rated load — the power loss is roughly 6 % of the input, which stays inside the thermal budget for most servo and stepper applications. Continuous output torque is 110 N.m at 100 rpm and 30 °C ambient, with a peak maximum of 176 N.m available for short-duration acceleration or overload events. The service life is rated at 30,000 hours under these conditions — a solid 3.4 years of continuous run time before the gear train reaches its wear limit. Backlash is 14 arc-min maximum, which places it in the standard-precision class — adequate for positioning conveyors, indexing tables, and general motion axes where sub-arc-minute repeatability isn't required. Torsional rigidity of 6.5 N.m/arcmin means the shaft wind-up under load is predictable and repeatable.
Obsolete — sourced through independent channels
Schneider Electric has marked the GBX0800251403F as obsolete. The gearbox is sourced through independent surplus and broker channels — quantities are confirmed at RFQ, and each unit is inspected before shipment. For a BOM that already uses this gearbox, the 30,000-hour service life means a unit bought today still has a useful window before the gear train needs attention. Lubricated for life — no oil changes or regreasing intervals to track, which simplifies MRO planning.
Shaft loading and environmental limits
The output shaft is C45 steel and accepts a maximum radial force of 650 N at mid-span (30,000-hour life) or 950 N for a shorter 10,000-hour duty. Axial force is capped at 1200 N for the 10,000-hour window, dropping to 900 N for the full 30,000-hour rating. These limits govern belt tension, overhung loads, and direct coupling alignment — exceed them and the output bearing life drops fast. The shaft output seal carries an IP54 rating — protected against dust ingress and splashing water, but not submersion. Noise output is 60 dB at 1 m under no-load — roughly the level of a quiet office printer, so it won't dominate the panel acoustic profile.