Torque ratings and what they mean for your load
The GBX1200080552F: The continuous output torque is 120 N.m at 100 rpm — this is the figure to size against your steady-state load, not the peak maximum of 192 N.m. The maximum output torque of 192 N.m covers occasional overloads or startup transients; sustained operation above 120 N.m will shorten the 30000-hour service life at rated conditions. Torsional rigidity is 12 N.m/arcmin — for positioning applications, this stiffness determines how much angular deflection you get under load. With 8 arcmin maximum backlash, the total positioning error is the sum of backlash and windup.
Shaft load limits — axial and radial forces
Maximum axial force Fa is 2100 N for the full 30000-hour service life at 100 rpm, or 2800 N if you accept a shorter 10000-hour life. These limits apply at 30 °C ambient. Maximum radial force Fr is 1500 N for 30000 hours, or 2000 N for 10000 hours, with the force applied at mid-distance from the output shaft. Overhung loads from pulleys or sprockets must stay within these envelopes.
Lifecycle reality — obsolete, sourced through surplus
Available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. The gearbox is lubricated for life and sealed — no field maintenance on oil changes, but the IP54 rating at the shaft output means the seal is the ingress boundary, not the housing itself.
Noise, efficiency, and thermal envelope
Noise level is 65 dB at 1 m under no-load conditions — straight-cut teeth are inherently noisier than helical; expect higher levels under load, especially at higher speeds. Efficiency is 94% — about 6% of input power is lost as heat. The black anodized aluminium housing dissipates this, but the operating ambient range of -25 to 90 °C sets the thermal boundary. The gearbox external diameter is 120 mm — confirm the mounting bore and bolt pattern against your existing bracket before committing, as no dimensional drawing is carried here.