8LSC56.ee030ffgg-4 | B&R 8.74 kW Servo Motor

Introduction: The Evolution of Precision Motion Control

Industrial automation has evolved from simple on-off controls to sophisticated servo systems that demand exact positioning, rapid acceleration, and unwavering reliability. The 8LSC56.ee030ffgg-4 from B&R represents this evolution, delivering a blend of performance and compactness that meets modern manufacturing challenges. As a three-phase synchronous servo motor with external fan cooling, it is engineered for applications where dynamic response and precision are non-negotiable.

What Is the 8LSC56.ee030ffgg-4?

The 8LSC56.ee030ffgg-4 is a permanent-magnet, electronically commutated synchronous motor. It is part of B&R's 8LSC series, known for excellent dynamic characteristics, positioning precision, and reduced weight. This model offers a large overload capacity and optimized torque rippling, ensuring smooth and controllable operation even under demanding conditions.

Key Features & Technical Specifications

• Nominal speed: 3000 rpm, with a maximum speed of 5000 rpm.
• Nominal torque: 27.8 Nm, stall torque 32.5 Nm, and maximum torque 75.0 Nm.
• Nominal power: 8740 W (8.74 kW).
• Nominal current: 17.1 A, stall current 19.9 A, maximum current 64.6 A.
• Torque constant: 1.63 Nm/A, voltage constant 98.44 V/1000 rpm.
• Stator resistance: 0.398 Ohm, stator inductance 5.6 mH.
• Electrical time constant: 14.1 ms, thermal time constant 43 min.
• Moment of inertia: 17.9 kg·cm², mass without brake 16.50 kg.
• Holding torque of brake: 27 Nm (brake mass 3.50 kg).
• Cable cross-section: 4 mm², connector size/type 1.
• Recommended servo drive: ACOPOS 024X.

One distinctive spec is the maximum torque of 75.0 Nm, which provides a substantial overload capacity. This means the motor can handle short-term peak loads without compromising performance, a critical advantage in applications with intermittent high-demand cycles.

Applications & Use Cases

The 8LSC56.ee030ffgg-4 is suited for a wide range of industrial motion control tasks. Its compact size and high power density make it ideal for packaging machinery, material handling, and robotics. Moreover, the motor's excellent dynamic characteristics support high-speed pick-and-place operations and precise positioning in CNC machines. With a nominal speed of 3000 rpm, it also fits applications requiring rapid spindle rotation, such as in textile or woodworking equipment.

Installation & Setup

Mounting the 8LSC56.ee030ffgg-4 follows EN 60034-7 standards, with options for horizontal (IM 3001) and vertical orientations (IM 3011, IM 3031). The flange conforms to DIN 42948 Form A, and the shaft end to DIN 748 Form E, ensuring compatibility with standard couplings and pulleys. The motor includes a key per DIN 6885-1 Form A and meets runout tolerance R per DIN 42955. For wiring, the cable cross-section is 4 mm², and the connector size is type 1. Always refer to the B&R manual for detailed installation instructions.

Maintenance & Reliability

Reliability is a cornerstone of the 8LSC56.ee030ffgg-4 design. The motor is rated for continuous operation (S1) per EN 60034-1 and has insulation class F (IEC 60085). It features thermal protection via KTY83-110 or AM-PTC1000 sensors, with a maximum winding temperature of 155°C. The externally fan-cooled design (IC4A0A6) ensures efficient heat dissipation, extending bearing life. Regular inspection of the fan and cooling path is recommended to maintain performance. The motor's IP64 protection rating (IP65 with optional oil seal) guards against dust and water ingress, reducing downtime in harsh environments.

Compatibility & Integration

The 8LSC56.ee030ffgg-4 is designed to work seamlessly with B&R's ACOPOS servo drives, specifically the 024X model. This pairing ensures optimal tuning and performance. The motor supports various feedback options, including resolver and EnDat (inductive or optical), with safety-related variants available. A single-cable hybrid solution simplifies wiring, reducing installation time and cost. For functional safety, encoders are available, and STO (Safe Torque Off) is implemented via the ACOPOS drive.

Common Questions About the 8LSC56.ee030ffgg-4

Q: What is the maximum speed of the 8LSC56.ee030ffgg-4?

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

Q: Can this motor be used with a brake?

A: Yes, an optional brake is available with a holding torque of 27 Nm, adding 3.50 kg to the motor mass.

Q: What cooling method does the motor use?

A: It uses external fan cooling (IC4A0A6), with a 24 VDC or 230 VAC fan module.

Q: What is the recommended servo drive for this motor?

A: The ACOPOS 024X servo drive is recommended for optimal performance.

Q: Does the motor support functional safety?

A: Yes, encoders for functional safety are available, and STO is implemented via the ACOPOS drive.

Support & Availability

The 8LSC56.ee030ffgg-4 is available through Petro Auto Tech. Contact our team to confirm current lifecycle status and stock availability before ordering. We are committed to providing reliable industrial automation components and expert support.