MS2M03-A0FNN-KMDH0
MS2M Ultra Compact Motors
The MS2M03-A0FNN-KMDH0 belongs to the MS2M Ultra Compact Motors series from Bosch Rexroth Indramat. This permanently excited synchronous motor is intended for tight-space automation axes where weight and responsiveness take priority over high continuous power. Its ultra-compact frame size 3 and frame length A allow direct integration into small pick-and-place modules, and the optical encoder with 23-bit resolution supports both single-turn and multiturn feedback for precise position loops.
The motor develops a continuous stall torque of 0.64 Nm while drawing a rated phase current of 1.50 A. At the base winding speed of 3000 rpm, this yields a mechanical output of 0.2 kW, adequate for light conveyor belts or indexing tables. A torque constant of 0.42 Nm/A links current command to produced torque, simplifying current-mode control in servo drives. Natural convection is the sole cooling path, so the 0 to 40 °C operating envelope must be observed to prevent thermal saturation. The supply electronics for the optical encoder require 4.75 to 5.25 V, and low motor inertia promotes quick acceleration when paired with the specified SPEEDCON M17 power and feedback connectors.
For short duty peaks the shaft can deliver up to 1.91 Nm; this overload headroom is supported by a phase inductance of 13.90 mH and a winding resistance of 2.78 Ω, which limit current ripple and heat rise during transients. The housing carries an IP65 rating, so dust ingress and water jets do not compromise operation, even though the plain shaft is supplied without a sealing ring. Absence of a holding brake reduces mass and eliminates residual drag. A double-cable metal lead set routes both power and encoder signals, and overall sound pressure remains 65 dB(A) at nominal load. Low rotor inertia further shortens settling times, while natural convection keeps acoustic noise and maintenance needs minimal.
Technical Specifications
Connectors
M17; Quick lock SPEEDCON
Cooling Mode
Natural Convection
Encoder
Optical Encoder (23 Bit)
Encoder Design
Single/Multiturn
Frame Length
A
Frame Size
3
Holding Brake
Without Brake
Leadwire Cable
Double Cable Metal
Maximum Torque
1.91 Nm
Operational Temp Range
0 to 40 Celsius
Phase Inductance
13.90 mH
Phase Resistance (20 °c)
2.78 Ω
Product Group
Ultra Compact Motor
Protection Type
IP65
Rated Current
1.50 A
Rated Power
0.2 kW
Rated Speed
3000 rpm
Rated Torque
0.64 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)
0.42 Nm/A
Winding
3000 min-1
Frequently Asked Questions
Internal Product Review
The MS2M03-A0FNN-KMDH0 is an ultra compact motor from Bosch Rexroth Indramat's MS2M series, featuring a rated power of 0.2 kW and a rated speed of 3000 rpm. With IP65 protection and an optical encoder (23 bit) supporting both single and multiturn operation, this motor is well-suited for precision automation tasks. Its low inertia design and natural convection cooling enhance reliability in space-constrained installations.
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