Torque ratings and what they mean for your drive train
The GBX0600400703F is a 60 mm diameter planetary gearbox with a 40:1 reduction ratio. Planetary construction packs high torque density into a compact envelope — the 60 mm housing diameter keeps the assembly short on the motor shaft. Continuous output torque is 40 N.m (354.03 lbf.in) at 100 rpm and 30 °C ambient. Maximum output torque — the peak the gearbox can handle without immediate damage — is 64 N.m (566.4 lbf.in) under the same conditions. The continuous figure is the one to size against for steady-state loads; the maximum covers occasional overloads like acceleration peaks or jams. Efficiency is 94 % at rated load — about 6 % of input power is lost as heat in the gear mesh and bearings. That loss matters for thermal management in enclosed spaces and for total system power draw calculations.
Lifecycle reality — this part is obsolete
Sourcing runs through independent surplus and broker channels. Quantities are lot-specific — confirmed at RFQ. If you need a direct replacement, a parametric search within the same 60 mm planetary family is the next step; no pin-compatible drop-in exists on the OEM's current price list.
Service life, backlash, and load limits — planning the replacement interval
Rated service life is 30,000 hours at 100 rpm and 30 °C ambient. That is about 3.4 years of continuous operation. If the duty cycle is lower or the load lighter, the life extends; higher speeds or temperatures shorten it. The gearbox is lubricated for life — no maintenance re-greasing interval. Maximum torsional backlash is 20 arc.minutes. That is the lost motion between input and output when the direction reverses — relevant for positioning accuracy in indexing or pick-and-place applications. If your application needs tighter repeatability, a gearbox with lower backlash (e.g., 5–10 arc.min) would be a better fit. Axial force limit on the output shaft is 450 N for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour life. Radial force limit (applied mid-shaft) is 340 N for 30,000 hours, 500 N for 10,000 hours. Both at 100 rpm and 30 °C. These numbers govern how much belt tension or overhung load the output bearing can take before life drops. Shaft output protection is IP54 — the output seal resists dust ingress and splashing water. The gearbox body is black anodized aluminium; the shaft is C45 carbon steel.
Noise and environmental ratings
Noise level is 55 dB measured at 1 m, no-load. That puts it in the quiet range for a planetary gearbox of this size — comparable to a quiet office. For noise-sensitive environments (laboratory equipment, medical devices, or near-operator stations), this is a useful spec to confirm against the local noise limit. Ambient temperature range for operation is -25 °C to 90 °C (-13 °F to 194 °F). That covers most indoor industrial environments and some outdoor cabinets, but the torque ratings above are all quoted at 30 °C — expect derating at elevated temperatures.