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MSM115-89-404-S-0KA Kollmorgen

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The Kollmorgen MSM115-89-404-S-0KA is part of the MSM Brushless Servo Motors series and has a continuous torque of 10 Newton-meters with a peak torque of 32 Newton-meters. It operates at a rated speed of 4000 RPM and a rated voltage of 460 volts, with a stall current of 10.9 amps peak. This servo motor features single-turn high resolution feedback and has a net weight of 11 kilograms.

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Product Description:

The MSM115-89-404-S-0KA is a brushless servo motor manufactured by Kollmorgen within the MSM Brushless Servo Motors series. Designed for closed-loop positioning and speed regulation, the unit connects to a compatible digital drive to move indexing tables, packaging axes, and other precision loads in automated equipment. Its permanent-magnet rotor and integrated feedback device provide tighter velocity control than open-loop induction machines, making the motor suitable for applications that require repeatable motion.

The back electromotive force constant is 123 V per 1,000 rpm, indicating the voltage generated at the terminals for every 1,000 rpm of shaft speed and the voltage margin required from the drive. With rated cooling, the motor delivers 10 Nm of continuous torque, while rapid transients require up to 38.2 A peak from the drive. The six-pole rotor provides magnetic alignment for controlled commutation, and its inertia of 0.0016 kg-m² limits acceleration demands on the drive train. A torque constant of 1.03 Nm/A relates phase current to developed torque. The peak stall current is 10.9 A, while the 12.0 mH phase inductance controls the current rise time and helps filter switching harmonics. These electrical characteristics assist with selecting a compatible drive, bus components, and motor cables.

During short-duty operation, the motor produces a peak torque of 32 Nm, provided that the shaft remains within its maximum speed of 4,000 rpm and the supply bus provides a line voltage of 460 V. Phase resistance is 2.0 ohms, helping keep copper losses moderate at continuous load. The single-turn high-resolution encoder sends absolute shaft-position information to the controller after each power cycle. An M6 × 1.0 mm shaft-end thread with a depth of 16 mm supports installation of compatible mechanical components. The housing weighs 11.0 kg, providing a stable motor body without placing excessive mass on compact gantry structures.

Back Emf Constant
123 V/KRPM
Continuous Torque
10 Nm
Feedback Type
Single-Turn High Resolution
Maximum Current
38.2 A (peak)
Net Weight
11.0 kg
Peak Torque
32 Nm
Pole Count
6
Rated Speed
4000 RPM
Rated Voltage
460 V
Rotor Inertia
0.0016 kg-m2
Shaft End Thread
M6 x 1.0 mm
Stall Current
10.9 A (peak)
Thread Depth
16 mm
Torque Constant
1.03 Nm/A
Winding Inductance
12.0 mH
Winding Resistance
2.0 Ohm

Frequently Asked Questions about MSM115-89-404-S-0KA:

Q: What is the continuous torque rating of the MSM115-89-404-S-0KA motor?

A: The MSM115-89-404-S-0KA servo motor provides a continuous torque output of 10 Nm, making it suitable for demanding motion control applications.

Q: What type of feedback does the MSM115-89-404-S-0KA motor use?

A: This model features single-turn high-resolution feedback for precise position measurement.

Q: What is the rated speed of the MSM115-89-404-S-0KA servo motor?

A: The rated speed for this motor is 4000 RPM, supporting high-speed operations.

Q: What is the peak torque capability of the MSM115-89-404-S-0KA?

A: Peak torque of the MSM115-89-404-S-0KA reaches up to 32 Nm during short bursts.

Q: What is the winding resistance value for the MSM115-89-404-S-0KA?

A: The winding resistance of this motor is specified at 2.0 Ohms.


Internal Product Review

  • ‘‘The MSM115-89-404-S-0KA is a Kollmorgen brushless servo motor with 10 Nm continuous torque and 32 Nm peak torque. Single-turn high-resolution feedback and 4000 RPM rated speed support accurate motion response in demanding servo axes. A 1.03 Nm/A torque constant highlights efficient torque production and strong drive performance.’’

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