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8MSA4X.R0-44 B & R Automation

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The B & R Automation 8MSA4X.R0-44 is part of the 8MS Three Phase Synchronous Motors series and features self-cooling and IP64 protection. This motor has a nominal rated speed of 6000 rpm and delivers extra large relative rated torque. It comes equipped with a resolver encoder technology and an 8 Nm holding brake.

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Product Description:

The 8MSA4X.R0-44 is a permanent-magnet servo motor from B&R Automation's 8MS Three Phase Synchronous Motors series. It converts regulated current from a drive into controlled torque and speed for coordinated machine motion. That operating role makes it suitable for automated cells that require repeatable positioning, steady acceleration, and responsive speed control. It fits automation duties such as indexing tables, packaging modules, and synchronized transfer mechanisms where servo response is necessary during frequent starts and stops.

Cooling is handled by self-cooling, so the housing sheds heat without forced external airflow. A nominal speed of 6000 rpm supports fast indexing and short production cycles when the axis must accelerate quickly. The integrated holding brake supplies 8 Nm of static torque, helping keep a load in place whenever electrical power is removed.

The enclosure carries an IP64 rating, which helps the motor resist dust and water spray in typical industrial areas. Feedback comes from a Resolver, and the BRX design holds non-linearity to ±1 angular minute with precision within ±10 minutes. Electrical behavior includes 4.1 mH inductance, while length code X and frame size 4 define the motor's proportions.

Power and feedback cables exit on the A side, which can simplify routing in compact machine layouts. The motor uses a smooth shaft end and is built without an oil seal, favoring low-friction coupling in clean environments. Wake Industrial offers a 1-year warranty, can arrange same-day shipping, and provides the chat tool available on the website for questions about type codes or fault codes.

Connection Direction
A Side
Cooling System
Self-cooling
Encoder Technology
Resolver
Holding Brake Equipped
Yes
Holding Brake Torque
8 Nm
Motor Length
X
Motor Size
4
Oil Seal Equipped
No
Product Type
8MS Three Phase Synchronous Motors
Protection Class
IP64
Rated Speed Nominal
6000 rpm
Relative Rated Torque
Extra large
Resolver Non-linearity
±1 angular minute
Resolver Precision
±10 angular minutes
Resolver Type
BRX
Shaft End Type
Smooth
Stator Inductance
4.1 mH

Frequently Asked Questions about 8MSA4X.R0-44:

Q: Is a holding brake included on the 8MSA4X.R0-44, and what is its torque?

A: This motor is equipped with a holding brake that provides 8 Nm of holding torque.

Q: What is the rated nominal speed of the 8MSA4X.R0-44 motor?

A: The 8MSA4X.R0-44 has a nominal rated speed of 6000 rpm.

Q: What type of encoder technology is featured on the 8MSA4X.R0-44?

A: The 8MSA4X.R0-44 uses a resolver for encoder technology, specifically the BRX type.

Q: What protection rating does the 8MSA4X.R0-44 motor have?

A: This model has a protection class of IP64, providing dust-tight construction and resistance to water spray.

Q: Which type of cooling system is used for the 8MSA4X.R0-44?

A: The cooling system used is self-cooling, so the motor operates without external cooling accessories.


Internal Product Review

  • ‘‘The 8MSA4X.R0-44 is a three-phase synchronous motor from B & R Automation, featuring self-cooling capability and a rated nominal speed of 6000 rpm. Equipped with a resolver (type BRX) for feedback and an 8 Nm holding brake, this motor ensures precise positioning and reliable holding force. With IP64 protection and extra large rated torque, it is well-suited for demanding industrial applications.’’

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