The latest power density motor generation
The 8MS-4 Series sets a new benchmark for performance. With exceptional power density packed into a compact design, it delivers maximum torque without compromising space. Engineered for outstanding energy efficiency, this series minimizes losses and reduces operating costs, making it ideal for versatile servo applications. Standardized flange sizes ensure seamless integration with standard mechanical parts available on the market. This new motor series defines a new era in motor technology and will perfectly support all the needs of modern machines, whether in terms of energy efficiency or footprint.
All benefits at a glance
Improve competitiveness
The unmatched power density, combined by default with the integration of all the latest safety functions, makes this latest generation of B&R motors a competitive solution in terms of performance-to-price ratio.
High efficiency
With energy efficiency exceeding 95% depending on the duty cycle, machine operating costs can be significantly reduced through optimized energy usage.
High Accuracy
With an optimized motor design that minimizes cogging torque, combined with an ultra-high bandwidth encoder, B&R motors offer exceptional controllability and outstanding precision at the output shaft increasing the production quality
Function and components
Technical specifications
The 8MS-4 series is the most advanced version in terms of technology within the LS servo motor range. This new series makes no compromises on any of the key aspects expected from a servo motor: Very high power density, exceptional energy efficiency, and outstanding precision and dynamics.
Motor options:
- EnDat 3
- New compact connector
- Oil seal
- Holding brake options
- Shaft end options
| Motors | Nominal Speed (nN [rpm]) from | Nominal Speed (nN [rpm]) to | Stall torque (M0 [Nm]) from | Stall torque (M0 [Nm]) to | Flange dimensions [mm] | Centering diameter [mm] | Shaft diameter [mm] |
| 8MSA2... | 3000 | 6000 | 0,87 | 1,62 | 60 x 60 | 50h7 | 14k6 |
| 8MSA3... | 3000 | 6000 | 1,80 | 4,60 | 80 x 80 | 70h7 | 19k6 |
| 8MSA4... | 3000 | 6000 | 6,45 | 10,16 | 100 x 100 | 95h7 | 19k6 |
| 8MSA5... | 3000 | 3000 | 20,15 | 29,40 | 150 x 150 | 130h7 | 24k6 |