MS2M04-A0FNN-KMDH1
MS2M Ultra Compact Motors
The MS2M04-A0FNN-KMDH1 is an ultra-compact servo motor produced by Bosch Rexroth Indramat within the MS2M Ultra Compact Motors series. Designed as a drive element for space-limited automation axes, the unit converts electrical energy into controlled mechanical rotation for positioning tasks in packaging, handling, and assembly lines.
At a rated speed of 3000 rpm, the motor delivers a continuous shaft output of 0.75 kW while drawing a phase current of 4.1 A rms. This operating point corresponds to a steady-state torque of 2.39 Nm, allowing consistent motion under nominal load. The housing carries an IP65 protection rating, so dust ingress and low-pressure water jets do not interrupt service. Natural convection removes winding heat, assisted by a plain shaft without a sealing ring to minimize friction. The integrated electrically released brake is energized with 24 V DC, securing the load during power-off events. Temperature operation is limited to 0–40 °C, aligning with the ultra-compact enclosure.
For short accelerations the electromagnetic design produces a maximum torque of 7.16 Nm, aided by low rotor inertia that sharpens speed response. The torque constant of 0.59 Nm/A (rms) links drive current to output torque, and combined with a phase inductance of 5.10 mH and a phase resistance of 0.57 Ω these electrical parameters permit finely tuned current loops. The integrated optical encoder offers 23-bit resolution and can be configured in single- or multiturn modes; it is supplied from a 4.75–5.25 V line through double metal leadwire cables and M17 SPEEDCON quick-lock connectors. Frame size 4 with length A keeps the unit compact, and the winding is rated for 3000 min-1 service. Overall acoustic emission remains at 65 dB(A), supporting installation near operators.
Technical Specifications
Brake Voltage
24V DC
Connectors
M17; Quick lock SPEEDCON
Cooling Mode
Natural Convection
Encoder
Optical Encoder (23 Bit)
Encoder Design
Single/Multiturn
Frame Length
A
Frame Size
4
Holding Brake
Electrically Released Brake
Leadwire Cable
Double Cable Metal
Maximum Torque
7.16 Nm
Operational Temp Range
0 to 40 Celsius
Phase Inductance
5.10 mH
Phase Resistance (20°c)
0.57 Ω
Product Group
Ultra Compact Motor
Protection Type
IP65
Rated Current (rms)
4.1 A
Rated Power
0.75 kW
Rated Speed
3000 rpm
Rated Torque
2.39 Nm
Rotor Inertia
Low Motor Inertia
Shaft
Plain Shaft, without shaft sealing ring
Sound pressure level
65 dB(A)
Supply Voltage Range
4.75 to 5.25 V
Torque Constant (20°c)
0.59 Nm/A (rms)
Winding
3000 min-1
Frequently Asked Questions
Internal Product Review
The MS2M04-A0FNN-KMDH1 from Bosch Rexroth Indramat is an ultra compact motor featuring a 23-bit optical encoder and natural convection cooling, ideal for precise motion applications. With a rated power of 0.75 kW and IP65 protection, this motor offers dependable performance in demanding environments. The quick lock SPEEDCON connectors provide fast, secure installation, making it a strong choice for modern automation systems.
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