Torque delivery and duty cycle — 64 N.m peak, 40 N.m continuous
The GBX0600250702F delivers a maximum output torque of 64 N.m (566.4 lbf.in) at 100 rpm and 30 °C, with a continuous output torque of 40 N.m (354.03 lbf.in) under the same conditions. The gap between peak and continuous ratings defines the duty cycle — sustained loads above 40 N.m will shorten the 30000-hour service life at rated speed. The 25:1 reduction ratio transforms input speed and torque accordingly — a 3000 rpm input motor sees 120 rpm at the output shaft, with torque multiplied by the ratio minus efficiency losses. The 94 % efficiency figure means 6 % of input power is lost as heat inside the gearbox, which must be dissipated through the 60 mm black anodized aluminium housing.
Backlash and positioning — 20 arc.min maximum torsional backlash
Maximum torsional backlash is 20 arc.min — this is the angular play between input and output when the direction of rotation reverses. For indexing or positioning applications requiring repeatability better than 0.3°, this gearbox introduces a dead band that must be accounted for in the servo loop or compensated by the controller. Straight teeth (not helical) contribute to this backlash figure; helical-cut planetary stages typically achieve lower backlash but at higher cost and axial load. Torsional rigidity is 2.5 N.m/arcmin — under a 10 N.m load, the output shaft twists approximately 4 arcmin from the theoretical position. This stiffness matters when the gearbox is part of a closed-loop axis; the compliance adds to the total system deflection.
Bearing load limits and overhung load constraints
The output shaft bearing is rated for a maximum axial force (Fa) of 450 N at 100 rpm over the 30000-hour service life, and 600 N for a 10000-hour life at the same speed and 30 °C. Maximum radial force (Fr) is 340 N at mid-shaft for 30000 hours, or 500 N for 10000 hours. These limits apply with the force applied at the midpoint of the output shaft — a pulley or sprocket mounted further out increases the bending moment on the bearing and reduces the allowable radial load. Shaft output IP54 means the seal at the output shaft resists dust ingress and splashing water, but the gearbox housing itself is not sealed — the IP rating applies only to the shaft exit point. In washdown environments, the gearbox should be mounted with the shaft pointing downward or shielded from direct spray.
Lifecycle status — obsolete, sourced through independent channels
The GBX0600250702F is listed as obsolete by Schneider Electric. No direct replacement or successor order code is recorded in the official lifecycle data. Units are available through independent surplus and broker channels; quantities are lot-specific and confirmed at the time of RFQ. The 60 mm frame size and 25:1 ratio are common in the planetary gearbox market, so a parametric cross-reference to an active series (e.g., Schneider's own BSH or Lexium gearbox ranges) may be possible — but no pin-compatible drop-in is documented. The gearbox is lubricated for life at the factory — no re-greasing interval.