Lexium 18 servo motor — 1800 W, 11.5 Nm continuous, IP67 sealed
The BEH18MM1813CA6C is a 1800 W servo motor from Schneider Electric's Lexium 18 range, delivering 11.5 Nm continuous stall torque at 220 V single-phase and 1500 rpm nominal speed. The 23-bit optic multi-turn encoder provides absolute position feedback over multiple revolutions, eliminating the need for a homing cycle after power loss in applications like rotary indexing tables or gantry axes. Rated IP67, the motor body and connector interface withstand washdown environments — suitable for food-and-beverage packaging lines or machine-tool coolant exposure without additional shrouding.
Torque and current profile — continuous vs peak
Continuous stall torque is 11.5 Nm at 12.5 A; peak stall torque reaches 34.5 Nm at 36 A maximum current — a 3:1 torque overload margin for acceleration and short-duration loads. The torque constant of 0.92 N.m/A at 40 °C means the drive's current loop directly maps to output torque; the back EMF constant of 63.35 V/krpm at 40 °C sets the voltage-speed ceiling for the drive bus.
Mechanical integration — flange, shaft, and forces
The motor uses an Asian standard flange with 130 mm flange size and four mounting holes — common for machine-tool spindle and packaging-machine axes in Asian-origin machinery. Shaft diameter is 22.0 mm with a 58.0 mm parallel key shaft end (key width 8.0 mm), rated for 686 N maximum radial force and 196 N maximum axial force — sufficient for belt-drive or direct-coupling to a ball screw. Overall dimensions are 168.6 mm width, 130 mm height, and 174.5 mm depth — the depth is the critical dimension for panel clearance behind the mounting face.
Lifecycle and compliance — active production, fully documented
The motor carries IP67 ingress protection, confirming suitability for wet environments; the 10-pole design and 3-phase connection are standard for Lexium 18 servo drives. Compliance documentation — RoHS, REACH, and CE declaration of conformity — is available from Schneider Electric; the motor meets the applicable IEC 60034 rotating machinery standards.