What the 850 W and 5.39 Nm ratings mean for the machine
The BEH18MM0813CF6C is a Lexium 18 servo motor delivering 850 W nominal output power at 220 V, single-phase input, with a nominal speed of 1500 rpm and nominal torque of 5.39 Nm. That torque rating is the continuous stall torque as well — the motor holds 5.39 Nm at zero speed without overheating, so it suits positioning axes that dwell under load. Peak stall torque reaches 16.17 Nm at 220 V, enough for acceleration transients on indexing or pick-and-place moves. The holding brake adds 16.0 Nm of static holding torque — the brake locks the rotor when power is removed, so vertical axes don't drift on a power loss.
Encoder, feedback, and integration details
Feedback comes from a 23-bit optic multi-turn encoder — 23 bits per revolution gives 8,388,608 counts per turn, and multi-turn tracking keeps absolute position over multiple shaft revolutions without a home cycle after power-up. The optic encoder type is suited for applications needing high resolution and repeatability, though it lacks the shock tolerance of a magnetic encoder in high-vibration environments. The motor uses a 10-pole design, which reduces cogging torque compared to lower pole counts, giving smoother low-speed rotation for contouring or tension control. Electrical connection is via two male/female connectors — the power and feedback cables each have their own connector, simplifying swap-out on the line. IP67 rating means the motor body and connectors withstand washdown — suitable for food-and-bev lines or wet machining environments. The Asian standard flange (130 mm) and 22.0 mm shaft with parallel key and 8.0 mm key width match common mounting patterns for 850 W class servo motors in packaging and material handling equipment.
For a critical spare on an existing Lexium 18 axis, this is the exact replacement — the 23-bit encoder, holding brake, and IP67 rating match the original spec. No pin-compatible alternative exists within the same frame size; if the machine already uses this motor, the spare should be the same order code.