1 kW, 3.18 Nm at 3000 rpm — Lexium 18 servo motor with brake
The BEH18LH1033MA6C is a 1000 W servo motor from the Schneider Electric Lexium 18 range, delivering 3.18 Nm nominal torque at 3000 rpm on single-phase 220 V supply. The 17-bit magnetic multi-turn encoder provides absolute position feedback without a battery backup — the motor knows its shaft position at power-up, which eliminates the homing cycle on a machine that was powered down mid-cycle. The holding brake (included per the order code suffix) holds the vertical axis load when power is removed — critical for Z-axis or gravity-loaded applications where a coasting motor would drop the payload. The brake is spring-applied, power-released; it engages on power loss or E-stop.
IP67 sealed enclosure, Asian standard flange
Rated IP67, the motor body and connector interface withstand washdown — suitable for food-and-bev lines, washdown stations, or outdoor conveyor sections where hose-directed cleaning is routine. The sealing relies on the connector O-ring being properly seated at the mating half; the motor itself is sealed at the shaft lip. Mounting uses the Asian standard flange (100 mm square, 4 holes at 9 mm diameter) common on compact servo applications in packaging and material handling. The 24 mm shaft with parallel key and 45 mm shaft length fits standard coupling and pulley bores. Maximum radial force is 686 N, axial force 196 N — stay within these limits to avoid bearing overload.
Torque constant, back EMF, and drive sizing
The torque constant is 0.51 N.m/A at 40 °C — each amp of current from the drive produces 0.51 N.m of shaft torque. Continuous stall current is 6.25 A, so the drive must supply at least that continuously to hold the rated torque at zero speed. Peak stall torque is 9.54 N.m, requiring 18.75 A from the drive for short-duration acceleration or overload events. Back EMF constant is 34 V/krpm at 40 °C — at 3000 rpm the motor generates 102 V back EMF. The drive's DC bus voltage must exceed this plus the voltage drop across the winding resistance to deliver rated current. With a 220 V single-phase input, a typical drive rectifies to ~310 VDC bus, leaving adequate headroom.