40 N.m continuous, 70 N.m peak — sizing the GBX0600400584D
The GBX0600400584D is a 60 mm-frame planetary gearbox with a 40:1 reduction ratio. The continuous output torque is 40 N.m, with a maximum peak of 70 N.m — that peak figure governs acceleration and emergency-stop loads, not the steady-state duty cycle. Torsional rigidity is 2.5 N.m/arcmin, and the rated torsional backlash is 25 arc-min. This is a standard-precision grade — suitable for positioning axes where the load reversal error budget allows about half a degree of lost motion at the output.
Straight-teeth planetary — thermal and noise profile
Straight-tooth spur planetary gearing, not helical. The efficiency is 94 %, which means 6 % of the input power dissipates as heat inside the housing — with a 40:1 ratio and 40 N.m output, the thermal loss at rated load is about 10-15 W, manageable in the black anodised aluminium body without forced cooling. Noise level is 58 dB at 1 m, no-load. Straight teeth are inherently noisier than helical at higher speeds, but at the output speeds typical of a 40:1 reduction from a servo (roughly 30-40 rpm output at 1200-1600 rpm input), the 58 dB figure holds — it's the input-stage gear mesh that dominates the acoustic signature.
Lubricated for life — 30,000 hour service interval
The gearbox is lubricated for life and rated for 30,000 hours at 100 rpm output, 30 °C ambient. No oil changes, no regreasing — the grease fill is sealed for the service life. The ambient range is -25 to 90 °C, so it works in unheated enclosures or near a motor hotspot. Shaft output seal is IP54 — splash protection, not submersion. The C45 steel output shaft handles 450 N axial force (Fa) and 340 N radial force (Fr) at the 30,000-hour rating; at the 10,000-hour rating those figures rise to 600 N axial and 500 N radial. If your load exceeds the 30k-hour limits, plan for the shorter service interval.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0600400584D as obsolete. No official successor part number is published. The gearbox is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ against your BOM line. Because this is a legacy planetary gearbox with a specific 60 mm frame, 40:1 ratio, and 40 N.m continuous rating, the closest functional replacement would need to match the mounting flange pattern, shaft diameter, and input interface — not just the ratio and torque. Confirm the input bore and keyway dimensions against your motor shaft before committing.