Product Description
8MSA4L.R0-31 is a high-performance permanent magnet synchronous AC servo motor of B&R 8MSA series manufactured in Austria, compatible with ACOPOS servo drive system. R0 means no integrated holding brake; 31 denotes encoder and shaft configuration. It features smooth plain shaft (without keyway) and rotatable angled circular connectors. This 4-pole motor is equipped with high-resolution absolute encoder, delivering fast dynamic response and high torque density with IP65 protection for dusty and oily harsh industrial environments. Commissioning is supported by Automation Studio software. It is widely adopted for motion control of high-end machinery and commonly used as original spare part for automation equipment.
Specifications
| Item | Specification |
|---|---|
| Model | 8MSA4L.R0-31 |
| Product Type | Permanent Magnet Synchronous AC Servo Motor |
| Brand | B&R (Bernecker + Rainer, part of ABB) |
| Frame Size | 40mm frame, 4 poles |
| Rated Voltage | 400V 3-phase AC |
| Nominal Speed | 6000 rpm |
| Continuous Stall Torque | 0.6 N·m |
| Shaft Type | Plain smooth shaft, no keyway |
| Brake | No integrated holding brake (R0) |
| Encoder | High-resolution absolute encoder |
| Connector | Angled rotatable circular power & encoder connectors |
| Cooling | Natural air cooling |
| Protection Class | IP65 |
| Insulation Class | Class F |
| Operating Temperature | 0℃ ~ +55℃ |
| Certifications | CE, UL |
| Country of Origin | Austria |
| Compatible Drives | B&R ACOPOS servo drives |
Application
- Packaging & printing machinery: High-speed cutting, web winding, electronic cam synchronous positioning.
- Machine tools & laser processing equipment: High-precision positioning and rapid reciprocating motion for feed axes.
- Food & pharmaceutical automation lines: Material handling, robotic manipulators and rotary indexing tables.
- Plastic extrusion and textile machinery: Tension control and multi-axis synchronized motion.
- Retrofit & maintenance: Spare part replacement for legacy B&R 8MSA servo systems.
Series Models
- 8MSA4L.R0-41: Same frame, different encoder variant, no brake
- 8MSA4L.B0-31: Same frame version with integrated holding brake
- 8MSA4M.R0-31: Same frame, higher torque rating
- 8MSA4S.R0-31: Lower torque variant within same series
- 8MSA4L.E0-31: Variant with E0 encoder configuration
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