MS2M03-B0FNN-KMDL1
MS2M Ultra Compact Motors
The MS2M03-B0FNN-KMDL1 is a three-phase servo motor produced by Bosch Rexroth Indramat for the MS2M Ultra Compact Motors series. Classified in the product group Ultra Compact Motor, it serves as a compact rotary actuator for high-precision industrial automation axes where limited cabinet space and low rotor inertia are required. The unit uses frame size 3 with frame length B to keep the mechanical envelope small while supporting dynamic positioning demands.
At its nominal operating point the motor supplies 0.4 kW of mechanical output, producing 1.27 Nm of continuous torque at 3000 min-1 while drawing 2.40 A from the drive inverter. A phase resistance of 1.74 Ω at 20 °C limits copper losses, and five pole pairs interact with a winding optimized for 3000 min-1 operation. When short bursts are required, the rotor can accelerate to 6000 min-1 and deliver 3.82 Nm of maximum torque. Natural convection cooling maintains these figures without auxiliary fans, and the aluminum housing is sealed to IP65 so airborne dust and water do not enter. Sound pressure stays at 65 dB(A), and power plus encoder lines terminate in M17 SPEEDCON quick-lock connectors combined inside a double metal leadwire cable. A keyed shaft without a sealing ring provides direct torque transfer.
The holding system is an electrically released brake energized at 24V DC, which secures the shaft when power is removed. Position feedback is handled by an optical 23-bit encoder that can operate in single- or multiturn mode; its electronics accept a supply range of 4.75 to 5.25 V. The motor mass is 1.7 kg, and its low rotor inertia supports acceleration cycles. A torque constant of 0.52 Nm/A(rms) helps the drive calculate current setpoints accurately. Reliable operation is specified between 0 to 40 °C, and natural cooling combined with the closed housing permits cabinet mounting without forced airflow.
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
B
Frame Size
3
Holding Brake
Electrically Released Brake
Leadwire Cable
Double Cable Metal
Mass
1.7 kg
Max Speed
6000 min-1
Max Torque
3.82 Nm
Operational Temp Range
0 to 40 Celsius
Phase Resistance (20 °c)
1.74 Ohm
Pole Pairs
5
Product Group
Ultra Compact Motor
Protection Type
IP65
Rated Current
2.40 A
Rated Power
0.4 kW
Rated Speed
3000 min-1
Rated Torque
1.27 Nm
Rotor Inertia
Low Motor Inertia
Shaft
Shaft with keyway, without sealing ring
Sound pressure level
65 dB(A)
Supply Voltage Range
4.75 to 5.25 V
Torque Constant (20 °c)
0.52 Nm/A(rms)
Winding
3000 min-1
Frequently Asked Questions
Internal Product Review
The MS2M03-B0FNN-KMDL1 from the MS2M Ultra Compact Motors series by Bosch Rexroth Indramat is an ultra-compact servo motor featuring an optical encoder with 23-bit resolution and IP65 protection. It offers a rated speed of 3000 min-1 and a rated torque of 1.27 Nm, making it suitable for precise, demanding motion applications. The combination of natural convection cooling and low motor inertia enhances reliability and response in high-performance environments.
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