Motor specs that set the motion loop
The BEH18LH1533MA6C is a 1.5 kW servo motor from the Lexium 18 range, delivering 4.77 N.m nominal torque at 3000 rpm on a single-phase 220 V supply. The 17-bit magnetic multiturn encoder gives position feedback with 131,072 counts per revolution — enough resolution to hold a micron on a ball-screw axis if the drive tuning is tight.
Brake, flange, and sealing — what fits where
This variant includes a holding brake — the brake holds the load at standstill when the drive is disabled, critical for vertical axes or any application where the load must not drift after power-off. The brake is spring-applied, electrically released; the datasheet gives the holding torque and release voltage. The motor uses an Asian standard flange with a 100 mm flange size and four 9 mm mounting holes. The shaft is 24 mm diameter with a parallel key, 45 mm shaft length. IP67 rating means the motor body and the connector interface withstand washdown — suitable for food-and-bev lines or wet machining areas.
Current, torque, and thermal limits
Continuous stall torque is 4.77 N.m at 8.9 A. Peak stall torque hits 14.31 N.m — useful for acceleration bursts during rapid moves. The maximum current Irms is 26.7 A at 1.5 kW, which sets the drive's peak current requirement. Air-cooled — no fan, so the motor relies on natural convection; derate if mounted in a confined enclosure without airflow. Back EMF constant is 36.5 V/krpm at 40 °C. This limits the maximum speed at a given DC bus voltage — at 220 V bus, the motor reaches its 3000 rpm rated speed without field weakening. The 10-pole design keeps cogging torque low, which matters for smooth low-speed rotation.