Lexium 18 servo motor — 1 kW with holding brake
The BEH18MF1033MF5C is a 1000 W servo motor from Schneider Electric's Lexium 18 range, delivering 3.18 N.m nominal torque at 220 V and a nominal speed of 3000 rpm. The integrated holding brake provides 3.2 N.m of holding torque, so vertical-axis loads stay put when the drive is off — no external brake resistor or mechanical lock needed. The 17-bit magnetic multi-turn encoder gives 131,072 points per turn of absolute position feedback — enough for precise positioning without a home cycle on power-up, as long as the battery-backed multi-turn count is maintained.
Fit and mounting — Asian standard flange, IP67 sealed
The motor uses an 80 mm Asian standard flange with four mounting holes, a 19 mm shaft diameter with parallel key, and a 35 mm shaft length. The overall body measures 142.1 mm wide by 80 mm tall by 89.9 mm deep — compact enough for tight machine envelopes where the motor sits close to the load. IP67 rating means the motor body and shaft seal withstand washdown — suitable for food-and-bev lines, packaging machines, or any environment where hoses and spray are part of the cleaning cycle.
Torque and current — continuous vs peak capability
Continuous stall torque is 3.18 N.m at 220 V, with a continuous stall current of 5.9 A. For short-duration moves, the peak stall torque reaches 11.13 N.m at 220 V — about 3.5× the continuous rating, which handles acceleration and deceleration without oversizing the motor for the average load. The torque constant is 0.539 N.m/A at 40 °C, and the back EMF constant is 33.9 V/krpm at the same temperature. Maximum permanent current is 21 A, and the maximum mechanical speed is 6000 rpm — though the nominal 3000 rpm is where the motor delivers its rated power.
The electrical connection uses two male/female connectors — a power connector and a feedback/brake connector. The 10-pole motor design and 3-phase winding at 220 V are standard for the Lexium 18 family, so the drive pairing is straightforward with Schneider's Lexium 28 or 32 series drives.