MSM115-62-404-M-2KA Kollmorgen
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MPN: M.1302.1359
The Kollmorgen MSM115-62-404-M-2KA is part of the MSM Brushless Servo Motors series and operates at a rated speed of 4000 rpm with a motor voltage of 460 V. It delivers a continuous torque of 7 Nm and a peak torque of 22 Nm, with a maximum current of 26.9 A. The servo motor features a shaft made from ST-60 and a brake weight of 9.6 kg.
Internal Product Review
The MSM115-62-404-M-2KA is a Kollmorgen brushless servo motor engineered for high-response motion systems, with 7 Nm continuous torque and 22 Nm peak torque. A 460 V motor voltage and 4000 rpm rated speed support strong dynamic performance in demanding servo applications.
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Product Description:
The MSM115-62-404-M-2KA is a brushless servo motor produced by Kollmorgen within the MSM Brushless Servo Motors series. Intended for positioning and speed-regulated duties in automated cells, it converts a 460 V drive output into controlled rotary motion through its six-pole permanent-magnet rotor. An integrated spring-applied brake provides holding capability, so vertical axes or indexing stations remain fixed when power is removed. This arrangement supports applications that require controlled movement during operation and secure load retention after the drive is disabled.
During continuous operation, the shaft can deliver 7 Nm while maintaining its rated speed of 4000 rpm; these values represent the thermal operating point for a steady mechanical load. The electromagnetic design provides a torque constant of 0.99 Nm/A, meaning nearly one newton-meter is developed for every ampere of phase current. To reach peak acceleration, the amplifier may command up to 26.9 A peak. Copper loss under that demand is influenced by a phase-to-phase resistance of 3.4 Ω. A peak stall current of 7.8 A indicates the drive requirement when the rotor is locked. Mechanical coupling is provided through an ST-60 steel shaft. The motor uses M6 × 1.0 mm mounting threads with a depth of 16 mm, allowing direct attachment to a compatible gearbox or machine frame without adapters.
For short bursts, the motor can generate a peak torque of 22 Nm, allowing rapid indexing and helping the system overcome inertial loads. Dynamic response is influenced by a phase-to-phase inductance of 16.8 mH; this value governs current rise time and helps the drive regulate its current loops. The back-EMF slope has a voltage constant of 120 V/krpm, which supports commutation diagnostics and speed estimation within the drive. The rotor has an inertia of 0.00138 kg·m², which influences the acceleration and deceleration response of the connected axis. The complete motor assembly weighs 9.6 kg, a value that should be considered when sizing mounting surfaces and supporting structures.
