8LSC57.ee030ff00-4 | B&R 33.0 Nm Servo Motor

B&R 8LSC57.ee030ff00-4 Three-Phase Synchronous Servo Motor

When production demands precise positioning and rapid acceleration, the 8LSC57.ee030ff00-4 from B&R delivers. This externally fan-cooled, permanent-magnet synchronous motor is built for applications requiring excellent dynamic characteristics, compact size, and reduced weight. Its high overload capacity and optimized torque ripple ensure smooth, controllable motion—critical for modern automation lines.

Key Features & Performance Metrics

• Nominal speed: 3000 rpm, with a maximum speed of 5000 rpm.
• Nominal torque: 33.0 Nm; stall torque 37.7 Nm; maximum torque 90.0 Nm.
• Nominal power: 10367 W; nominal current 20.2 A; stall current 23.1 A.
• Torque constant: 1.63 Nm/A; voltage constant 98.44 V/1000 rpm.
• Stator resistance: 0.356 Ohm; stator inductance 5.1 mH.
• Electrical time constant: 14.2 ms; thermal time constant 45 min.
• Moment of inertia: 20.9 kg·cm²; mass without brake 18.00 kg.
• Brake: holding torque 27 Nm; brake mass 3.50 kg.
• Number of pole pairs: 5.

These specifications translate into real cost benefits. The high torque density reduces the need for gearboxes, lowering initial investment and maintenance. The efficient cooling design extends component life, cutting replacement costs over time.

Applications & Use Cases

This motor excels in packaging, material handling, and machine tool applications where precise speed and position control are essential. Its compact form factor fits tight spaces, while the high overload capacity handles intermittent peak loads without oversizing. For example, in a high-speed labeling machine, the 8LSC57.ee030ff00-4 maintains accurate registration, reducing waste and rework costs.

Installation & Setup

Mounting follows EN 60034-7 standards (IM 3001, IM 3011, IM 3031). The flange conforms to DIN 42948 Form A, and the shaft end meets DIN 748 Form E. Ensure proper alignment and use the recommended ACOPOS servo drive (034X) for optimal performance. The motor supports single-cable hybrid connections, simplifying wiring and reducing installation time.

Maintenance & Reliability

With IP64 protection (IP65 with optional oil seal) and insulation class F, the motor withstands demanding environments. The externally mounted fan (IP20) provides consistent cooling, and thermal protection (KTY83-110 / AM-PTC1000) monitors winding temperature up to 155°C. Regular inspection of the fan and connectors per the manufacturer's manual ensures long service life. The robust design minimizes unplanned downtime, directly improving operational efficiency.

Compatibility & Integration

The 8LSC57.ee030ff00-4 integrates seamlessly with B&R ACOPOS servo drives. It offers feedback options including resolver and EnDat encoders, with safety-related variants for functional safety. The single-cable hybrid solution reduces cabling costs and simplifies installation. For new or retrofit systems, this motor provides a reliable, cost-effective motion solution.

Common Questions About the 8LSC57.ee030ff00-4

What is the maximum speed of the 8LSC57.ee030ff00-4?

The maximum speed is 5000 rpm, while the nominal speed is 3000 rpm.

What is the holding torque of the optional brake?

The brake provides a holding torque of 27 Nm.

Which servo drive is recommended for this motor?

B&R recommends the ACOPOS 034X series servo drive.

Does the motor support safety functions?

Yes, it can be equipped with encoders for functional safety, and STO is implemented via the ACOPOS drive.

Availability & Support

The 8LSC57.ee030ff00-4 is available through Petro Auto Tech. Contact our team to confirm stock and lead times. We provide expert support to help you integrate this motor into your automation system efficiently.