Planetary gearbox for precision motion — 40 mm frame, 8:1 reduction
The GBX0400080701F is a 40 mm diameter planetary gearbox with straight-cut teeth and an 8:1 reduction ratio, rated for 6 N.m continuous output torque at 100 rpm and 30 °C ambient. Maximum output torque reaches 10 N.m under the same conditions — the margin covers short-duration peak loads without oversizing the frame. Efficiency is listed at 94 % — typical for a single-stage planetary of this size, meaning only 6 % of input power is lost as heat. The noise level at 1 m, no-load, is 55 dB, quiet enough for lab or light industrial environments where audible gear whine matters.
Continuous torque of 6 N.m defines the thermal limit for sustained operation at 100 rpm; the 10 N.m maximum rating is the mechanical limit for infrequent overloads — plan the duty cycle so the RMS torque stays below the continuous figure. Maximum torsional backlash is 30 arc.min — this is a commercial-grade planetary, not a zero-backlash servo reducer. For position-indexing applications where repeatability matters, budget this lost motion into the closed-loop gain or consider a lower-backlash alternative. Axial force (Fa) is rated 200 N at 100 rpm for a 10,000-hour life, derating to 160 N for 30,000 hours; radial force (Fr) follows the same profile at mid-span on the output shaft. These limits govern bearing life — overhung loads from a pulley or sprocket must be checked against the Fr curve. The gearbox is lubricated for life and sealed to IP54 at the shaft output — no maintenance access required, but the IP54 rating means it is splash-resistant, not washdown-rated. Ambient operating range is -25 to 90 °C, covering most indoor machine environments.
Sourcing — obsolete, available through independent channels
Schneider Electric lists the GBX0400080701F as obsolete. The part is available through independent surplus and broker channels. Quantities are lot-specific; each unit is confirmed against the original spec at RFQ. No stock-holding claim — sourced per BOM quantity.