Planetary gearbox with 60:1 reduction and 260 N.m continuous torque
The Schneider Electric GBX1200600552F is a planetary gearbox with straight teeth, 120 mm external diameter, and a 60:1 reduction ratio that steps motor speed down while multiplying torque by the same factor, minus efficiency losses. Continuous output torque is 260 N.m at 100 rpm and 30 °C, with a maximum output torque of 416 N.m under the same conditions — the continuous figure governs the duty cycle for most applications, while the maximum covers transient overloads. Efficiency is 94 %, meaning 6 % of input power is lost as heat in the gear train; this is typical for a single-stage planetary with straight teeth and influences the thermal load on the motor and enclosure.
Mechanical ratings that set the operating envelope
Service life is 30000 hours at 100 rpm and 30 °C — at higher speeds or temperatures the life shortens; the gearbox is lubricated for life, so no oil changes are needed within that interval. Maximum torsional backlash is 14 arc.min, which defines the lost motion between input and output when reversing direction — relevant for positioning accuracy in indexing or servo-follow applications. Maximum axial force on the output shaft is 2100 N for the 30000-hour life target, rising to 2800 N if the application accepts a 10000-hour service life; radial force limits are 1500 N and 2000 N respectively, with force applied at mid-distance from the shaft. Torsional rigidity is 12 N.m/arcmin — this stiffness figure tells you how much the gearbox twists under load; higher rigidity means less wind-up in precision motion paths.
Environmental and integration constraints
Shaft output sealing is IP54, meaning the output side is protected against dust ingress and splashing water — the gearbox body itself is black anodized aluminium, and the shaft is C45 steel.
Obsolete — sourcing through independent channels
Available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. The paperwork — including any original Schneider documentation — is sourced with the part where available, but compliance certifications (RoHS, REACH, UL, IEC) should be verified against the specific production lot.