MS2M04-B0FNN-KMDH1
MS2M Ultra Compact Motors
The MS2M04-B0FNN-KMDH1 motor is manufactured by Bosch Rexroth Indramat and belongs to the MS2M Ultra Compact Motors series. Classified in the product group Ultra Compact Motor, it is intended for precision positioning duties in industrial automation where cabinet space is limited. A plain shaft without a sealing ring transmits motion directly into the machine, and the design relies on low rotor inertia to accelerate axes quickly while maintaining control accuracy.
Mechanically, the unit mounts on an 80 mm flange with a bolt circle diameter of 90 mm, allowing direct exchange with earlier Rexroth frames. A spigot diameter of 70 mm centers the housing, and the frame size 4, length code B, keeps the overall envelope short. Its winding supports speeds up to 3000 min⁻¹, and the motor can deliver a peak torque of 9.55 Nm for short load surges. Passive heat removal through Natural Convection eliminates the need for forced airflow, and an enclosure rated IP65 blocks dust and water jets in typical shop environments. The specified flange dimensions also keep the sound pressure level at 65 dB(A), and the assembly operates between 0 °C and 40 °C without derating.
Electrical features focus on feedback and safety. The integrated Optical Encoder (23 Bit) delivers high-resolution position data and can operate in single-turn or multiturn mode to suit different drive requirements. An electrically released brake rated at 24 V DC secures the axis whenever the controller removes torque. Power and signal exit through M17 SPEEDCON connectors that pair with a double metal leadwire cable, and the control electronics remain stable across a supply window of 4.75 to 5.25 V. The motor maintains full performance up to 1000 m altitude while a 19 mm shaft diameter with 32 mm length interfaces to standard couplings.
Technical Specifications
Bolt Circle Diameter
90 mm
Brake Voltage
24V DC
Connectors
M17; Quick lock SPEEDCON
Cooling Mode
Natural Convection
Encoder
Optical Encoder (23 Bit)
Encoder Design
Single/Multiturn
Flange Size
80 mm
Frame Length
B
Frame Size
4
Holding Brake
Electrically Released Brake
Leadwire Cable
Double Cable Metal
Maximum Operating Altitude
1000 m
Maximum Torque
9.55 Nm
Operational Temp Range
0 to 40 Celsius
Product Group
Ultra Compact Motor
Protection Type
IP65
Rotor Inertia
Low Motor Inertia
Shaft
Plain Shaft, without shaft sealing ring
Shaft Diameter
19 mm
Shaft Length
32 mm
Sound pressure level
65 dB(A)
Spigot Diameter
70 mm
Supply Voltage Range
4.75 to 5.25 V
Winding
3000 min-1
Frequently Asked Questions
Internal Product Review
The MS2M04-B0FNN-KMDH1 is an ultra compact motor from Bosch Rexroth Indramat, featuring a 23-bit optical encoder and natural convection cooling for precise motion control and efficient thermal management. The IP65 protection and low rotor inertia support reliable operation in demanding industrial settings. This motor stands out for its high torque output and versatile encoder design.
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