Lexium 18 servo motor with integrated holding brake
The BEH18MR2913MF6C is a Schneider Electric Lexium 18 servo motor, a 2.9 kW unit with a nominal speed of 1500 rpm at 220 V and a nominal torque of 18.46 Nm. It is a 3-phase, 10-pole motor with an IP67-rated enclosure, making it suitable for washdown environments in food processing or packaging lines where the motor body sees direct spray. The motor includes a holding brake rated at 50 Nm, which locks the shaft when power is removed — essential for vertical-axis applications where the load must not drift under gravity during a power loss or at standstill. The brake engages automatically and releases when the drive energizes the motor.
Performance envelope and feedback resolution
Continuous stall torque is 18.46 Nm at 220 V, with a peak stall torque of 55.38 Nm for short-duration acceleration. The continuous stall current is 18.8 A, and the maximum permanent current is 56 A at 2.9 kW. The torque constant is 0.982 Nm/A at 40 °C, which lets you estimate the current draw for a given load torque. Feedback comes from a 17-bit magnetic multi-turn encoder. The 17-bit resolution (131,072 counts per revolution) provides fine position feedback for precise speed and position control loops. The multi-turn tracking keeps absolute position over multiple shaft revolutions without needing a home cycle after power-up, as long as the backup battery is maintained.
Mounting and mechanical interface
The motor uses an Asian standard flange with a 180 mm flange size and four mounting holes. The shaft is 35 mm in diameter with a 79 mm shaft length and a 10 mm parallel key per DIN 6885. The overall dimensions are 217.5 mm width, 180 mm height, and 226.5 mm depth — the depth is the body length excluding the shaft extension. Maximum radial force (Fr) is 1470 N and maximum axial force (Fa) is 490 N. These limits apply at the shaft centerline and must be respected when coupling to a load — belt drives or overhung pulleys need to stay within the radial force budget to avoid bearing damage. The electrical connection uses two male/female connectors. There is no second shaft end — the motor is single-ended. Cooling is air-cooled via the motor surface; no external blower is required for the rated duty.
Sourcing and lifecycle status
Compliance documentation includes the standard Schneider Electric declarations — RoHS and REACH compliance are typical for this series. The IP67 rating implies the motor meets IEC 60529 ingress protection requirements. For specific UL or IEC certification files, the manufacturer's documentation package is available on request.