20:1 planetary — 260 N.m continuous, 416 N.m peak
The GBX1200200704F is a planetary gearbox with straight-cut teeth, 120 mm diameter, and a 20:1 reduction ratio. It delivers 260 N.m continuous output torque at 100 rpm (30 °C) and peaks at 416 N.m for short-duration loads — sized for servo or stepper applications where the duty cycle stays within the continuous envelope. Rated service life is 30,000 hours at 100 rpm and 30 °C ambient. The unit ships lubricated for life — no oil changes or regreasing intervals on the PM schedule.
Load ratings and overhung limits
Maximum radial force Fr is 1500 N at 100 rpm applied mid-shaft for the 30,000-hour life target. Bump that to 2000 N if you accept a 10,000-hour service window. Maximum axial force Fa follows the same pattern: 2100 N for 30,000 hours, 2800 N for 10,000 hours. These are the numbers to check when coupling to a belt drive or a pinion — overhung loads eat bearing life fast. Torsional rigidity is 13 N.m/arcmin, and maximum torsional backlash is 12 arc.min. That is a standard-precision grade — not a zero-backlash unit, so factor it into the positioning budget if the application indexes through the gear train.
Lifecycle — discontinued, sourced on request
Schneider Electric lists the GBX1200200704F as obsolete. No official successor part number is published. That means the only channel is independent surplus and new-old-stock supply — quantities are lot-specific and confirmed at RFQ time. The housing is black anodized aluminium, shaft material is C45 steel. Shaft output seal is rated IP54 — splash-resistant but not washdown. Ambient operating range is -25 to 90 °C, which covers most indoor machine builds.