B&R 8MSA2S.R0-K4 | Synchronous Servo Motor

Description

Product Overview

The B&R 8MSA2S.R0-K4 is a synchronous servo motor intended for controlled rotary motion in industrial automation equipment. It belongs to B&R’s 8MSA motor family, which is designed for applications requiring coordinated motor operation, repeatable positioning, and controlled speed. In a servo system, the motor works with a compatible drive and feedback arrangement to execute motion commands from the machine controller. Its role is particularly important in applications where mechanical timing and axis coordination affect product quality or machine throughput.

The 8MSA2S family includes several motor configurations with different torque and power characteristics. Published motor data identifies a 6,000 rpm rated-speed class for the 8MSA2S variants and lists different rated torque and power values across motor sizes. These family-level figures should not be treated as confirmed specifications for the complete B&R 8MSA2S.R0-K4 part number. The suffix is important: motor selection must account for the exact winding, mechanical construction, feedback arrangement, and associated drive configuration. A motor that shares the 8MSA2S family designation may not be a direct replacement for this specific version.

For maintenance and replacement work, the B&R 8MSA2S.R0-K4 should be checked against the installed motor’s nameplate and the machine’s original electrical documentation. Confirm the rated voltage, current, torque, speed, feedback type, connector arrangement, shaft dimensions, and mounting details before installation. Also verify the servo-drive model and its supported motor data. These checks help prevent incorrect feedback interpretation, drive configuration faults, mechanical fit problems, and unexpected performance differences after commissioning.

Product Introduction (Non-Templated)

A servo motor replacement is not simply a matter of matching the frame size. Feedback compatibility, winding data, shaft dimensions, and drive parameters all affect whether the machine can return to its original motion profile. The 8MSA2S.R0-K4 belongs to B&R’s synchronous motor family, but its complete suffix should be matched before procurement.

For equipment downtime planning, compare the replacement unit’s nameplate with the removed motor and retain the original drive configuration for reference. This is especially important on machinery with tightly coordinated motion axes.

Key Technical Specifications

Procurement note: Do not use generic 8MSA2S family data as a substitute for the full motor specification. The exact suffix R0-K4 must be checked against the nameplate or original B&R motor documentation.

8MSA2S.R0-K4

Related Products

The following are related B&R motor-family references, not confirmed drop-in replacements:

• 8MSA2S – Same base motor family; verify complete ordering code.
• 8MSA2M – 8MSA2 motor-size variant with different motor data.
• 8MSA2L – Larger 8MSA2 family configuration.
• 8MSA2X – Another 8MSA2 family size designation.
• 8MSA3S – Related synchronous motor family variant.
• 8MSA3M – 8MSA3 motor-size variant.
• 8MSA3L – Larger 8MSA3 family configuration.
• 8MSA4L – Related B&R synchronous motor model.
• 8MSA5S – Related B&R synchronous motor model.

The B&R motor data documentation lists these family designations, but mechanical and electrical interchangeability must be established separately.

Frequently Asked Questions

Q1: What is the B&R 8MSA2S.R0-K4 used for?

It is a synchronous servo motor used to provide controlled rotary motion in industrial machinery. Applications can include automated production equipment and tube-making machinery. The exact machine application depends on the original system design.

Q2: Can I replace an existing 8MSA2S.R0-K4 with another 8MSA2S motor?

Not without checking the complete part number. Confirm winding data, rated torque, rated speed, feedback configuration, shaft dimensions, mounting, and connector details. Matching only the 8MSA2S family is insufficient.

Q3: Can I hot-swap this motor while the machine is powered?

No. Isolate the relevant power sources and follow the machine manufacturer’s lockout and discharge procedures before disconnecting or removing the motor. Servo systems can retain hazardous electrical energy after power is switched off.

Q4: Does the 8MSA2S.R0-K4 support firmware v3.1?

Firmware compatibility is primarily determined by the servo drive and controller, not by the motor alone. Check the installed drive’s firmware, motor database, and configuration software documentation before commissioning.

Q5: Does the replacement motor require parameter changes?

It may. If the replacement has different electrical or feedback characteristics, the drive’s motor parameters and feedback configuration must be checked. Use the exact motor data rather than copying settings from a similar-looking unit.

Q6: What should I check before purchasing this motor?

Request clear nameplate photographs and verify the complete model code, serial number, rated voltage, current, torque, speed, feedback connection, shaft dimensions, and mounting arrangement. Also confirm the unit’s condition and whether it has undergone electrical and mechanical testing.

Q7: How can I verify that a supplied unit is suitable for my machine?

Compare its nameplate and physical construction with the removed motor and the machine’s original parts documentation. Confirm that the servo drive recognizes the motor configuration and that the feedback and mechanical interfaces match before applying operating loads.

Important identification note: The available technical references support identifying 8MSA2S.R0-K4 as a B&R synchronous servo motor, not a servo drive. Exact electrical and mechanical ratings for the complete suffix remain unverified. A clear nameplate photograph would help establish the precise configuration before treating it as a replacement part.