Product Description:

The MSM215-505-304-M-2KA is a brushless servo motor manufactured by Kollmorgen within the MSM Brushless Servo Motors series. Designed for industrial automation, it converts drive current into rotational motion with tight positional accuracy for indexing tables, packaging actuators, and pick-and-place axes. The frame includes an integral electromagnetic brake that secures the shaft at rest, allowing operation on vertical or overhung loads when the drive is disabled.

Under continuous duty, the motor can deliver 57 Nm of torque without exceeding its thermal limits. Combined with a rated speed of 3000 rpm, this continuous torque establishes the output power available for constant-velocity moves. During dynamic operation, the drive may supply up to 147.1 A peak, while the pole-pair geometry and a stall current requirement of 45.5 A peak establish the baseline current for static holding. With a torque constant of 1.39 Nm/A, the commanded current can be translated directly into expected shaft torque within the control loop. The phase windings have an inductance of 6.5 mH and a resistance of 0.24 Ω, which the servo amplifier uses to model voltage demand and tune current regulators across the six-pole electromagnetic field.

For rapid acceleration, the motor supports a peak torque of 160 Nm, and the steel rotor has a moment of inertia of 0.0205 kg-m² to support a short response time. The motor has an overall mass of 52 kg, including the holding brake, and the housing extends 453 mm from the mounting face. These values assist with machine layout and mounting support calculations. The brake coil accepts 24 VDC, enabling integration with common control power supplies. Radial shaft loading may reach 101 kg at 3000 rpm, while an M12 × 1.75 mm metric thread on the output end simplifies attachment to gearboxes or timing-pulley hubs. A back-EMF constant of 168 V/kRPM supports DC bus voltage selection so the drive can reach full speed without voltage saturation.