MT308B1-E2D1 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen MT308B1-E2D1 is a servo motor from the MTC Servo Motors series with a rated power of 1.28 kW and a rated speed of 3000 rpm. This motor provides a peak torque of 18.73 Newton-meters and a continuous line current of 5.16 ARMS. It weighs 5.1 kilograms and operates with a maximum line voltage of 250 VRMS.
Internal Product Review
The MT308B1-E2D1 is a Kollmorgen MTC servo motor rated for 1.28 kW at 3000 rpm. From a motion-control standpoint, 18.73 N-m peak torque and 5.10 N-m stall torque at 25 C give the motor strong acceleration and dependable low-speed output. A 24.5 ARMS peak line current further highlights solid dynamic performance for demanding servo axes.
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Product Description:
The MT308B1-E2D1 motor is manufactured by Kollmorgen as part of the MTC Servo Motors series and is intended to drive midrange machine axes that require accurate velocity and position control. At 5.1 kg, the frame can be mounted on moderately sized fixtures without adding counterbalance hardware. This makes the motor practical for pick-and-place heads, indexing tables, or packaging spindles in automated cells.
Under continuous operation, the shaft reaches a rated speed of 3000 rpm while delivering 1.28 kW of mechanical power to the load. Sustained current draw is limited to 5.16 A RMS, a value set by the copper loss resulting from the winding’s 2.11 ohms of DC resistance and 22 mH of inductance. A back electromotive force constant of 57.3 V RMS/krpm indicates the voltage generated at the terminals when the rotor is driven externally, and the drive must not exceed the 250 V RMS line rating during regeneration. Stall torque is 5.10 N·m at 25 °C, falling to 4.79 N·m at 40 °C as thermal limits reduce the allowable current. With a torque sensitivity of 0.947 N·m/A RMS, linear current modulation allows controllers to resolve small force increments for precise positioning.
For short transients, the drive may supply 24.5 A RMS, allowing the motor to reach a peak torque of 18.73 N·m and accelerate inertial loads quickly. The rotor’s moment of inertia is only 0.0001749 kg·m², so speed changes occur with minimal lag, while its mechanical damping helps control resonance. Thermal behavior is governed by a case-to-ambient resistance of 0.786 °C/W and a time constant of 33 minutes; these characteristics permit intermittent overloads without a rapid temperature rise when the housing is attached to a metallic machine plate.
