Torque and efficiency for servo pairing
GBX1600161384D is a Schneider Electric planetary gearbox in the GBX 160 mm frame with a 16:1 reduction ratio — meaning one input revolution yields sixteen output revolutions at the price of multiplied output torque, the standard planetary trade-off that drives the rest of the sizing math. Continuous output torque is rated at 800 N·m and the maximum output torque reaches 1280 N·m, with 94 % efficiency so the bulk of the input power reaches the load rather than being lost to friction and churning in the lubricant. The 30000 h service life at 100 rpm and 30 °C is the figure that sets the realistic mean-time-between-replacement for a gearbox on this frame; it is a Lubricated-for-life design, so field service is limited to mounting checks rather than oil changes.
Precision-motion ratings — backlash, rigidity, inertia
Maximum torsional backlash is 10 arc.min with torsional rigidity of 41 N·m/arcmin — the backlash number caps how much wind-up shows up at the output when the motor reverses, and the rigidity figure tells you how much twist per N·m of reaction torque, both critical for position-controlled servo axes. Moment of inertia is 7.47 g·cm², a low figure that lets the gearbox sit on a high-acceleration servo without dominating the reflected load inertia — sizing rule of thumb is to keep the load inertia at roughly the motor rotor inertia, and a low gearbox inertia preserves headroom for the driven mechanism. Noise level is 70 dB at 1 m, no-load — relevant when the gearbox sits near an operator station or inside an enclosure where sound transmission amplifies; specify the no-load figure because the loaded noise floor rises with the application.
Shaft loads, IP rating, and mounting envelope
Maximum radial force Fr is 4200 N at 100 rpm over 30000 h at 30 °C, rising to 6000 N if the design life is shortened to 10000 h; maximum axial force Fa is 6000 N at 100 rpm over 30000 h, 8000 N over 10000 h — the duration figure is the one that drives the real-world rating, not the headline number.
Construction and the GBX line fit
The shaft is C 45 steel, the standard medium-carbon grade for gearbox output shafts, paired with straight teeth rather than helical — straight-cut gears are louder under load but cheaper to manufacture and introduce no axial thrust from the gear mesh itself. Compatibility code GBX confirms the part sits inside the GBX 160 mm family; the 160 mm external diameter is the mechanical frame reference for matching servo adapters and motor flanges within that series.