9:1 planetary gearbox, 210 N.m continuous — what the ratings mean
The GBX1200091002F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for servo and stepper motor output stages where a 9:1 reduction is needed. The continuous output torque is 210 N.m at 100 rpm and 30 °C; the maximum output torque reaches 336 N.m under the same conditions — that 60 % headroom handles peak loads during acceleration or reversing without oversizing the gearbox. Torsional rigidity is 13 N.m/arcmin, which means the gearbox resists windup under load — important for positioning accuracy in indexing or pick-and-place applications. The maximum torsional backlash is 12 arcmin, a standard precision grade for general automation where repeatability matters more than absolute positioning.
Lifecycle reality — obsolete, sourced through independent channels
Schneider Electric lists the GBX1200091002F as obsolete. The part is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. For a BOM that depends on this exact ratio and frame size, the sourcing path is a per-order quote against available inventory. The gearbox carries a rated service life of 30,000 hours at 100 rpm and 30 °C, lubricated for life — no maintenance schedule for grease changes. The shaft output seal is rated IP54, which keeps dust and splash out in typical machine-tool or conveyor environments.
Mechanical limits — axial and radial load capacity
Maximum axial force Fa is 2100 N at 100 rpm for the full 30,000-hour service life, or 2800 N if you accept a 10,000-hour life. Maximum radial force Fr is 1500 N at 100 rpm for 30,000 hours, 2000 N for 10,000 hours — both measured with the force applied at mid-distance from the output shaft. These numbers govern the overhung load from a belt pulley or chain sprocket; exceeding them shortens bearing life faster than the torque rating. The housing is black anodized aluminium, 120 mm external diameter, with a C45 steel output shaft.