80 mm planetary gearbox — 80:1 reduction, 120 N.m continuous
The GBX0800800701F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, with an 80 mm housing diameter and an 80:1 reduction ratio. Continuous output torque is 120 N.m at 100 rpm, with a maximum of 192 N.m at the same speed — the 94% efficiency means most of the input power reaches the output shaft rather than heating the gearbox. Rated service life is 30,000 hours at 100 rpm and 30 °C ambient, with the gearbox lubricated for life — no scheduled oil changes.
Load ratings and mechanical limits for sizing
Maximum torsional backlash is 16 arc.min — this is a standard-precision planetary, not a zero-backlash servo gearbox; expect some lost motion on direction reversal. Torsional rigidity is 6.3 N.m/arcmin, giving a stiffness figure for windup calculations under load. Maximum axial force (Fa) on the output shaft is 1200 N at 100 rpm for a 10,000-hour life, derating to 900 N for the full 30,000-hour service life. Maximum radial force (Fr) applied at mid-distance on the output shaft is 950 N at 100 rpm for 10,000 hours, or 650 N for 30,000 hours — overhung loads must stay within these limits.
Construction and environmental fit
Housing is black anodized aluminium; the output shaft is C45 steel — standard for industrial gearboxes in this torque class. Shaft output seal is rated IP54, meaning the gearbox is protected against dust ingress and splashing water at the shaft exit — not suitable for washdown or submerged service. Noise level at 1 m under no-load is 60 dB — audible but not intrusive for a gearbox of this size; load-dependent noise will be higher.
Lifecycle reality — obsolete, sourced to order
No official successor or cross-reference is recorded from the manufacturer; the GBX series has been superseded by newer planetary families with different mounting dimensions. Available through independent surplus channels — quantities are lot-specific and confirmed at RFQ. This is a last-time-buy stockist scenario: once the remaining units are gone, there is no factory replenishment.