MS2M04-A0FNN-KMDH1 Bosch Rexroth Indramat
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MPN: R911421768
The Bosch Rexroth Indramat MS2M04-A0FNN-KMDH1 is an ultra compact motor from the MS2M Ultra Compact Motors series. It features a rated power of 0.75 kW, rated speed of 3000 rpm, and rated torque of 2.39 Nm, with a maximum torque of 7.16 Nm. The motor uses an optical encoder with 23-bit resolution and offers IP65 protection with an electrically released holding brake at 24V DC.
Internal Product Review
The MS2M04-A0FNN-KMDH1 from the MS2M Ultra Compact Motors series is a low-inertia, high-precision servo motor featuring a 23-bit optical encoder with single/multiturn design. With a rated power of 0.75 kW and a rated speed of 3000 rpm, this unit delivers reliable performance for dynamic automation tasks. Its IP65 protection and natural convection cooling make it a robust solution for industrial environments.
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Product Description:
The MS2M04-A0FNN-KMDH1 belongs to the MS2M Ultra Compact Motors series produced by Bosch Rexroth Indramat. It is an ultra-compact servo unit intended for tight-footprint machinery where precise torque and velocity control are required. The motor uses natural convection for cooling, carries an IP65 housing for dust- and splash-proof installation, and is equipped with an electrically released holding brake driven from a dedicated 24 V DC circuit to secure the shaft whenever power to the drive stage is removed.
This model delivers a rated mechanical output of 0.75 kW at a synchronous speed of 3000 rpm. Under nominal conditions it provides 2.39 Nm and draws 4.1 A rms from the inverter, while the optical 23-bit encoder supplies single- or multiturn position data over a 4.75–5.25 V logic line. Phase inductance is 5.10 mH, a value that shapes current rise time and simplifies tuning, and the winding resistance measured at 20 °C is 0.57 Ω. The plain output shaft is supplied without a sealing ring, reducing drag and shortening the axial package length. Quick-lock SPEEDCON M17 connectors allow tool-free attachment of the double metal lead-through cable set, and the complete assembly is protected to IP65 for use outside of the control cabinet.
The intermittent region is defined by a ceiling torque of 7.16 Nm, allowing short acceleration bursts without thermal overload. Electrical losses remain modest thanks to a phase resistance of 0.57 Ω and a torque constant of 0.59 Nm/A rms, characteristics that follow the low-inertia rotor construction and frame size 4, length A geometry. Operation is specified within 0 to 40 °C, and the motor’s 65 dB(A) acoustic rating meets general plant-floor noise targets. An internal winding code for 3000 min⁻¹ synchronizes the electromagnetic field with the rated mechanical speed, while the optical encoder, metal-sheathed cabling, and electrically released brake form a closed package that fits naturally cooled, high-response axes.
