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MS2M04-B0FNN-KMDL1 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat MS2M04-B0FNN-KMDL1 is an ultra compact motor from the MS2M Ultra Compact Motors series featuring an optical encoder with 23-bit single or multiturn design. It has natural convection cooling and an IP65 protection type, along with a shaft equipped with a keyway. The motor operates with an electrically released holding brake rated at 3.8 Nm torque and accepts a brake voltage of 24V DC.

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Product Description:

The MS2M04-B0FNN-KMDL1 is an ultra-compact synchronous servo motor built by Bosch Rexroth Indramat for the MS2M Ultra Compact Motors series. It is intended for precision positioning and velocity regulation in industrial automation, where compact dimensions and high-resolution feedback simplify multi-axis assemblies. Its small footprint reduces the space required between adjacent motion axes and supports installation in tightly arranged machines.

The motor has frame size 4 and frame length B, which provide a 40 mm square flange and a modest body depth for restricted machine envelopes. Motion feedback comes from an optical 23-bit encoder that supports single-turn or multi-turn counting and yields more than eight million positions per revolution. Heat is removed through natural convection, so the motor does not require a cooling fan. The electrically released brake provides 3.8 Nm of holding torque and operates from 24 V DC, securing vertical axes when motor power is removed. The housing has IP65 protection against dust and water jets, while M17 SPEEDCON connectors and dual metal cable leads provide secure electrical connections under vibration. Five pole pairs and a 3000 rpm winding provide a balanced torque-to-speed profile for controlled motion.

The encoder accepts a supply voltage of 4.75 to 5.25 V, allowing it to operate with the corresponding feedback interface in the drive. The motor operates at ambient temperatures from 0 to 40 °C, supporting use in typical industrial work areas and enclosed automation equipment with adequate ventilation. Its Class 155 (F) insulation system withstands elevated winding temperatures during continuous operation. Sound pressure does not exceed 65 dB(A), which helps limit operating noise near production equipment. Low rotor inertia supports rapid acceleration and deceleration during short positioning cycles. The keyed shaft provides positive torque transfer to gearboxes, ball screws, or other coupled loads, while the absence of a shaft sealing ring reduces friction at the output interface.

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
4
Holding Brake
Electrically Released Brake
Holding Brake Torque
3.8 Nm
Leadwire Cable
Double Cable Metal
Operational Temp Range
0 to 40 Celsius
Pole Pairs
5
Product Group
Ultra Compact Motor
Protection Type
IP65
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
Thermal Class
155(F)
Winding
3000 min-1

Frequently Asked Questions about MS2M04-B0FNN-KMDL1:

Q: What type of holding brake does the MS2M04-B0FNN-KMDL1 motor use and how much torque does it provide?

A: The MS2M04-B0FNN-KMDL1 is equipped with an electrically released holding brake rated at 3.8 Nm.

Q: What kind of encoder is built into the MS2M04-B0FNN-KMDL1 and what is its resolution?

A: This motor features an optical encoder with a 23-bit resolution, supporting both single and multiturn operation.

Q: What level of environmental protection does the MS2M04-B0FNN-KMDL1 motor offer?

A: The MS2M04-B0FNN-KMDL1 has an IP65 protection rating, making it dust tight and resistant to low-pressure water jets.

Q: What are the supply and brake voltage requirements for the MS2M04-B0FNN-KMDL1?

A: This motor supports a supply voltage range of 4.75 to 5.25 V and a brake voltage of 24V DC.

Q: How is the MS2M04-B0FNN-KMDL1 motor cooled during operation?

A: The cooling mode for this model is natural convection, meaning it operates without the need for external fans or forced air cooling.


Internal Product Review

  • ‘‘The MS2M04-B0FNN-KMDL1 ultra compact motor from Bosch Rexroth Indramat features an optical encoder with 23-bit resolution and supports both single and multiturn operation. Its IP65 protection and low motor inertia design make it ideal for demanding environments and applications requiring fast dynamic response. This model stands out for its electrically released brake with 3.8 Nm holding torque, offering excellent control and safety.’’

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