MSM115-34-404-E2-0KA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
MPN: M.1302.1161
The Kollmorgen MSM115-34-404-E2-0KA is part of the MSM Brushless Servo Motors series and has a flange size of 105 mm with a bolt circle of 95 mm. This servo motor delivers a continuous torque of 3.8 Nm and a peak torque of 12 Nm, with a shaft diameter of 19 mm and a shaft extension of 40 mm. It features a winding resistance of 8.4 ohms and weighs 6.6 kg.
Internal Product Review
The MSM115-34-404-E2-0KA is a Kollmorgen brushless servo motor with 3.8 Nm continuous torque and 12 Nm peak torque. A 0.95 Nm/A torque constant and 0.00057 kg-m² rotor inertia support responsive, well-controlled motion in servo axes. Strong electromagnetic design and stable torque delivery make this unit an excellent choice for precise industrial positioning.
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Product Description:
The MSM115-34-404-E2-0KA is a brushless servo motor manufactured by Kollmorgen for the MSM Brushless Servo Motors series. Designed for precision motion tasks in automated machinery, the unit converts drive commands into accurate shaft rotation that can follow position, speed, or torque profiles. Its flange allows direct coupling to gearboxes, timing pulleys, or load shafts while keeping inertia low for responsive control. The motor drives packaging lines, electronics assembly stations, and material-handling axes that demand consistent acceleration with little maintenance.
Mechanical integration begins with the 105 mm square flange, which mounts to frames through a 95 mm bolt circle. M6 × 1.0 threaded holes accept standard fasteners, and a 19 mm shaft delivers torque through keys or clamp couplings. Under rated conditions, the motor supplies 3.8 Nm of continuous torque, yet it can rise momentarily to 12 Nm for rapid acceleration. These torque levels correspond to a current envelope that reaches 15.6 A peak during transients, while holding the rotor stationary draws only 4.5 A peak. With a torque constant of 0.95 Nm/A, the drive can estimate output directly from phase current. The 40 mm shaft extension provides clearance for couplings, and the balanced assembly minimizes vibration during operation.
Electrical constants determine how the motor pairs with servo amplifiers. A back-EMF coefficient of 115 V/KRPM links speed to generated voltage, so drives running on 300 VDC buses can operate the unit safely up to its top speed. Stator behavior is modeled by a phase inductance of 32.0 mH and a phase resistance of 8.4 Ω; together, they limit ripple current and heat at switching frequencies. The six-pole rotor has an inertia of only 0.00057 kg·m², enabling fast reversals without overshoot. The motor has a net mass of 6.6 kg, supporting heat dissipation while keeping loads on linear slides moderate.
