Planetary gearbox, 8:1, 18 N.m continuous — obsolete, sourced per RFQ
The GBX0600080402D is a 60 mm-diameter planetary gearbox from Schneider Electric's GBX series, with straight teeth and a reduction ratio of 8:1. It delivers a continuous output torque of 18 N.m and a maximum output torque of 29 N.m.
Torque, backlash, and duty cycle — the numbers that govern the fit
Continuous output torque of 18 N.m is the rating for sustained operation; the maximum output torque of 29 N.m covers peak loads during acceleration or momentary overloads. The maximum torsional backlash is 20 arc.min — this is the angular play at the output shaft under reversing loads, critical for positioning accuracy in indexing or pick-and-place applications. Service life is rated at 30000 hours at 100 rpm output speed and 30 °C ambient. The gearbox is lubricated for life — no maintenance re-greasing interval. Efficiency is 96 %, typical for a single-stage planetary with straight teeth at this ratio. Noise level is 58 dB at 1 m, no-load — quiet enough for laboratory or light assembly environments.
Mounting, shaft loading, and environmental sealing
Mounting position is any position, which simplifies integration into vertical or inverted axis layouts. The housing is black anodized aluminium; the shaft material is C 45 steel. Maximum axial force Fa is 450 N at 100 rpm for the 30000-hour life rating, or 600 N for a 10000-hour duty cycle. Maximum radial force Fr is 340 N at 100 rpm (30000-hour life) or 500 N (10000-hour life), with the force applied at mid-distance from the output shaft. The shaft output seal is rated IP54. Torsional rigidity is 2.3 N.m/arcmin — this stiffness value determines the angular deflection under load and is a selection parameter for applications requiring repeatable positioning. Moment of inertia is 0.065 g.cm², low enough for servo-driven axes with rapid acceleration profiles.