Planetary gearbox for precision motion — 5:1 reduction, 96% efficiency
The GBX0400050403D is a straight-tooth planetary gearbox from Schneider Electric's GBX series, with a 40 mm outer diameter and a 5:1 reduction ratio. It delivers a rated torque of 14 N.m and keeps torsional backlash under 30 arc.min — tight enough for indexing and positioning axes on pick-and-place or conveyor drives. Efficiency is listed at 96 %, which is strong for a single-stage planetary — less heat to manage in the enclosure and more of the motor's power reaching the load.
Load ratings and service life at 100 rpm
At 100 rpm and 30 °C ambient, the gearbox is rated for 30,000 hours service life. Maximum axial force (Fa) is 200 N for a 10,000-hour target, dropping to 160 N for the full 30,000-hour run. Radial force (Fr) follows the same pattern — 200 N at 10,000 hours, 160 N at 30,000 hours, with the force applied at mid-distance from the output shaft. Noise level is 55 dB at 1 m, no-load — quiet enough for lab or light assembly environments without additional acoustic enclosure.
Mechanical construction and integration
Housing is black anodized aluminium; the output shaft is C45 steel. The unit is lubricated for life — no oil changes, no venting. IP54 at the shaft output means it's splash-resistant but not washdown-rated; keep it out of direct spray in food or wet lines. Mounting position is any orientation, which simplifies layout in tight cabinets or vertical-axis builds. Torsional rigidity is 1 N.m/arcmin, giving predictable stiffness under load for positioning accuracy.
Sourcing — obsolete, but available through surplus channels
This gearbox is marked obsolete by Schneider Electric. There is no official successor listed in the GBX family. For BOM lines that need this exact reduction and footprint, independent surplus and broker channels are the route — quantities are lot-specific and confirmed at RFQ. If you're holding a line or filling a legacy build, send the RFQ with your target quantity and delivery window.