8KSL94.ee020ff00-h B&R 305 Nm Synchronous Servo Motor

Introduction: The Evolution of Precision Motion

Industrial automation has evolved from simple relay logic to complex motion systems demanding exact torque and speed control. As machine builders push for higher throughput and energy efficiency, the need for servo motors with verified performance characteristics has never been greater. The B&R 8KSL94.ee020ff00-h answers this call. This three-phase synchronous servo motor, part of the 8KS series, combines permanent-magnet technology with optimized cooling to deliver engineering-grade precision in the most demanding applications.

Key Specifications of the 8KSL94.ee020ff00-h

Every parameter of this motor is designed for exact performance. The following table summarizes the critical electrical and mechanical data, ensuring you can match it precisely to your application.

• Nominal speed: 2000 rpm
• Nominal torque: 305 Nm
• Nominal power: 63879 W
• Nominal current: 127 A
• Maximum torque: 875 Nm
• Maximum current: 400 A
• Maximum speed: 3600 rpm
• Torque constant: 2.49 Nm/A
• Voltage constant: 171 V/1000rpm
• Stator resistance: 0.046 Ohm
• Stator inductance: 2.2 mH
• Number of pole pairs: 3
• Mass (without brake): 255 kg
• Holding torque of brake: 320 Nm
• Recommended servo drive: ACOPOS 1650

These verified values ensure seamless integration into high-performance systems. The motor's high overload capacity, with maximum torque of 875 Nm, supports demanding acceleration profiles.

Failure Mode Analysis: Ensuring Reliability

In high-torque applications, understanding potential failure modes is critical. The 8KSL94.ee020ff00-h is virtually maintenance-free, but environmental factors can impact longevity. Thermal protection via KTY84-130 sensors monitors winding temperature, with a maximum of 155°C. The insulation class F and thermal time constant of 43.9 minutes allow the motor to handle short-term overloads without damage. Bearing life is rated at 20,000 hours under specified conditions, and the IP54 rating protects against dust and water splashes. To avoid premature failure, ensure proper cooling—either via the integrated axial fan module (IC 416) or liquid cooling—and adhere to the permissible radial shaft loads. Regular inspection of the fan module and brake (if equipped) is recommended.

Applications and Integration

This motor excels in general machine manufacturing, including injection molding, metal forming, and large-scale material handling. Its high torque density makes it ideal for replacing hydraulic systems with precise electric motion. The 8KSL94.ee020ff00-h integrates seamlessly with B&R's ACOPOS servo drives, particularly the recommended 1650 model. Feedback options include resolver, EnDat 2.1, or EnDat 2.2 encoders, with functional safety support. Power connection is via a terminal box, and encoder connection uses speedtec or ITEC connectors. For fieldbus integration, an external gateway may be required; consult AutoDCSTech for precise matching.

Support and Availability

AutoDCSTech provides engineering-grade support for the 8KSL94.ee020ff00-h. Contact us with your exact requirements for precise matching and verified availability.