What this gearbox delivers on a motion axis
The GBX0400150703F is a 40 mm planetary gearbox with a 15:1 reduction ratio, sized for servo or stepper motor output stages where compact diameter and low backlash matter. Continuous output torque is 18 N.m at 100 rpm and 30 °C; peak intermittent torque reaches 29 N.m under the same conditions. Efficiency is rated at 94 %, which keeps thermal buildup low in continuous-duty cycles. Maximum torsional backlash is 28 arc.min — this is a standard-precision grade, not a zero-backlash unit. For indexing or positioning applications that need tighter repeatability, a lower-backlash planetary would be needed. The straight-tooth geometry keeps cost down but produces slightly higher noise than helical-cut gears; the listed noise level is 55 dB at 1 m, no-load.
Lifecycle reality — obsolete, sourced on demand
Schneider Electric lists the GBX0400150703F as obsolete. This part is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. If you are maintaining an existing machine that uses this gearbox, it is worth securing a spare while supply lasts. Service life is specified at 30,000 hours at 100 rpm and 30 °C, with the gearbox lubricated for life — no field re-greasing interval. The IP54 rating on the shaft output means it is splash-protected but not washdown-rated; keep it out of direct spray in food or wet environments.
Mechanical limits and mounting
Maximum radial force on the output shaft is 200 N at 100 rpm for a 10,000-hour life, or 160 N for the full 30,000-hour service life — force applied at mid-distance from the shaft. Maximum axial force follows the same derating: 200 N for 10,000 h, 160 N for 30,000 h. These limits govern the coupling and belt-drive selection; exceeding them shortens bearing life faster than the gear mesh wears. Housing is black anodized aluminium, 40 mm outer diameter. Shaft material is C45 carbon steel. Ambient operating range is -25 to 90 °C, which covers most indoor industrial cabinets but not outdoor direct-sun applications without a cover.