MS2M03-A0FNN-KMDH1
MS2M Ultra Compact Motors
The MS2M03-A0FNN-KMDH1 is a synchronous servo unit produced by Bosch Rexroth Indramat for closed-loop positioning in compact machinery. Assigned to the MS2M Ultra Compact Motors series, it belongs to the Ultra Compact Motor product group and occupies Frame Size 3 with the short Frame Length A. These dimensional codes allow designers to fit the motor into tight footprints while still delivering the torque density needed for pick-and-place axes, small gantries, or indexing tables used throughout automated assembly and material-handling cells.
An electrically released holding brake energized at 24 V DC secures the load when power is switched off and disengages automatically at start-up. Power and feedback lines connect through the M17 quick-lock SPEEDCON connectors, and the drive side is cabled with a double cable metal lead for abrasion resistance inside drag chains. Heat is removed by Natural Convection, so no external fans are required, and the aluminum housing carries an ingress rating of IP65 for dust-tight service and water-jet cleaning. Position feedback is provided by a Optical Encoder (23 Bit) that can be read in single- or multiturn mode, giving high resolution without mechanical gearboxes. Dynamic response is helped by the motor’s Low motor inertia, which shortens acceleration times on rapidly cycled axes.
The motor operates continuously within an ambient range of 0 to 40 °C, and its internal electronics accept a logic supply of 4.75 to 5.25 V delivered from the drive controller. The stator winding is optimized for speeds up to 3000 min⁻¹, allowing direct coupling to high-speed linear stages while keeping acoustic emission at 65 dB(A). A plain output shaft supplied without a shaft sealing ring minimizes friction in precision couplings, and the sound level meets workplace noise directives. These characteristics suit small packaging, semiconductor, and test rigs that cannot accommodate forced-air cooling or complex service access.
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
3
Holding Brake
Electrically Released Brake
Leadwire Cable
Double Cable Metal
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
Sound pressure level
65 dB(A)
Supply Voltage Range
4.75 to 5.25 V
Winding
3000 min-1
Frequently Asked Questions
Internal Product Review
The MS2M03-A0FNN-KMDH1 is an ultra-compact motor from Bosch Rexroth Indramat, featuring a 23-bit optical encoder with both single and multiturn capability for precise positioning. The motor operates with natural convection cooling and provides IP65 protection, making it suitable for demanding environments. Low rotor inertia and an electrically released brake ensure fast response and secure holding, making this unit a strong choice for applications requiring high accuracy and reliability.
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