Planetary gearbox, 80 mm frame, 32:1 reduction
The GBX0800321002F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, with an 80 mm housing diameter and a 32:1 reduction ratio. It delivers 120 N.m continuous output torque at 100 rpm and 30 °C, with a maximum intermittent torque of 192 N.m under the same conditions. Efficiency is listed at 94 %, which means about 6 % of input power is lost as heat inside the gearbox — relevant for thermal management in a sealed, compact enclosure where the black anodized aluminium housing is the only heat path. Noise output is 60 dB at 1 m under no-load conditions — quiet enough for laboratory, packaging, or assembly lines where operator exposure is a concern.
Torque, life, and mounting constraints
Rated service life is 30,000 hours at 100 rpm and 30 °C with the continuous torque of 120 N.m. The gearbox is lubricated for life, so there is no maintenance interval for oil changes — fit it and forget it until the end of the service window. Maximum axial force on the output shaft is 1200 N for a 10,000-hour life at 100 rpm and 30 °C, dropping to 900 N for the full 30,000-hour rating. Radial force limits are 950 N (10,000 h) and 650 N (30,000 h), with the force applied at mid-distance from the output shaft. Shaft output protection is IP54 — splash-resistant but not washdown-rated. The housing itself is sealed, but the shaft seal is the wet-end boundary; if the application sees directed spray or hose-down cleaning, a secondary cover or IP65-rated coupling is needed. Torsional rigidity is 6.5 N.m/arcmin, and maximum torsional backlash is 14 arc.min — standard precision for indexing or conveyor drives, not for servo-grade positioning where single-arcminute repeatability is required.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX0800321002F as obsolete. For a line-down situation or a BOM that already carries this part number, the gearbox is available through independent surplus and broker channels. Quantities are lot-specific — confirmed at RFQ time, not held in stock. If the application can tolerate a different frame size or ratio, a current-production planetary gearbox from the same class may be a better long-term fit — but there is no pin-for-pin drop-in from Schneider's active catalogue. A form-fit-function review is required before substituting.