Planetary gearbox with 20:1 reduction and 260 N.m continuous torque
The GBX1200200703F is a Schneider Electric planetary gearbox with straight teeth, a 120 mm outer diameter, and a 20:1 reduction ratio. It delivers 260 N.m continuous output torque at 100 rpm and 30 °C, with a maximum of 416 N.m under the same conditions. Rated efficiency is 94 %, and the gearbox is lubricated for life — no scheduled oil changes over its 30,000-hour service life at rated load.
The 260 N.m continuous torque at 100 rpm sets the thermal limit for steady-state positioning or conveying loads. The 416 N.m peak covers acceleration transients and occasional overloads, but sustained operation above the continuous figure shortens the 30,000-hour service life. Maximum torsional backlash is 12 arc.min — this is the lost motion at the output under reversing load. For applications needing tighter positioning repeatability, a lower-backlash gearbox (e.g., 3–5 arc.min) would be required. Torsional rigidity of 13 N.m/arcmin means the output shaft twists 1 arc-minute per 13 N.m of applied torque; this stiffness figure governs the windup under load in servo-driven indexing.
Mounting, sealing, and environmental limits
The shaft output seal is rated IP54 — splash-proof from the output side, but the gearbox body is not sealed for washdown. Ambient operating range is -25 to 90 °C; the lubricant is factory-filled and sealed for life, so no field greasing is needed. Shaft material is C45 carbon steel. Maximum axial force (Fa) is 2100 N at 100 rpm for the 30,000-hour life target, or 2800 N if you accept a 10,000-hour service interval. Maximum radial force (Fr) applied at mid-span on the output shaft is 1500 N for 30,000 hours, 2000 N for 10,000 hours. Noise level is 65 dB at 1 m, no-load — typical for a straight-tooth planetary of this size. The black anodized aluminium housing dissipates heat through the 120 mm diameter shell; no external cooling is required at the rated duty.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX1200200703F as obsolete.