B&R 8LSA35.DB060S300-3 6000 RPM Servo Motor with Brake & Keyed Shaft – High-Speed Vertical Axis Solution

The B&R 8LSA35.DB060S300-3 represents the full-featured variant within the 8LSA35 6000 RPM family. It combines high-speed dynamics with both fail-safe holding and positive torque transmission, making it the most versatile choice for demanding industrial axes.

Understanding the Model Code

This model code tells you exactly what you're getting:

• DB: Multi-turn encoder with EnDat 2.2 interface – absolute position tracking across 4096 revolutions, eliminating homing routines .

• 060: 6000 RPM nominal speed – optimized for high-throughput, low-inertia motion tasks .

• S300: This suffix is the defining differentiator within the S100/S200/S300 series:

  • S100 = Keyed shaft, without brake

  • S200 = Smooth shaft, with brake

  • S300 = Keyed shaft, with brake – the comprehensive configuration .

Integrated Holding Brake for Vertical Safety

This model includes a factory-integrated 4.00 Nm holding brake with spring-applied, electrically-released operation. When power is removed, the brake engages to hold the axis stationary, preventing unintended load movement. This configuration is the recommended choice for:

• Vertical lifting axes (Z-axis)

• Tilting and swiveling units

• Robotic arms requiring position retention during power loss

• Machinery with safety-critical stop conditions

The brake adds 1.09 kg to the motor weight and 0.38 kgcm² to the rotor inertia—values that should be factored into dynamic system calculations .

Keyed Shaft for Positive Torque Transmission

Unlike the smooth shaft (S200 variant), the S300 features a 14 mm keyed shaft with a parallel key per DIN 6885 . This design ensures a positive mechanical lock between the motor and driven component, making it ideal for:

• Timing pulleys and belt drives

• Sprockets and chain drives

• Gearboxes requiring reliable torque transfer

• Keyed couplings with repeated acceleration, deceleration, and reversal

The keyed shaft eliminates reliance solely on friction clamping, providing a more robust connection for high-torque and high-vibration applications.

Absolute Positioning Confidence

The EQI 1331 FS multi-turn encoder communicates via EnDat 2.2, providing absolute position data across 4096 mechanical revolutions even after a complete power cycle. This eliminates referencing runs on machine startup, reducing downtime and improving overall equipment effectiveness .

Why Choose the 8LSA35.DB060S300-3?

• High-Speed Operation: 6000 RPM nominal speed enables faster cycle times for packaging, printing, and pick-and-place .

• Integrated Brake for Safety: 4 Nm holding brake ensures secure load retention during power-off conditions – essential for vertical axes .

• Keyed Shaft for Reliability: Positive mechanical torque transmission with 14 mm keyed shaft – no reliance on friction alone .

• Multi-Turn Absolute Feedback: EnDat 2.2 with 4096 revolution tracking eliminates homing runs .

• Single-Cable Simplicity: Hybrid cable combines power and feedback, reducing wiring complexity and cabinet space .

• 94% Energy Efficiency: Reduces operating costs and heat dissipation in control cabinets .

• B&R Ecosystem Ready: Optimized for ACOPOS 8V1045, ACOPOSmulti 8BVI0028, and ACOPOS P3 4X5X drives with pre-configured motor parameters .

• High Overload Capability: Maximum torque of 9.2 Nm (575% of nominal) for demanding acceleration tasks .

• Industry Certifications: CE, UKCA, and cURus E360421 approved .

Typical Applications

• Vertical Lifting Modules (Z-axis positioning with brake retention and keyed connection)

• Robotic Arm Joints (Axes requiring fail-safe holding and high dynamic response)

• Packaging Indexing Stations with vertical tooling and belt/pulley drives

• Print Registration Systems (High-speed, precise synchronization with positive drive)

• Rotary Indexing Tables with stop-position holding and keyed coupling

• Automated Palletizing Systems

• Carton Erectors & Case Packers

• Machine Retrofit & Replacement Projects for existing 8LSA35 installations

Frequently Asked Questions (FAQ)

Q1: What is the difference between 8LSA35.DB060S100-3, S200-3, and S300-3?

Q2: Can the holding brake be used for dynamic deceleration?
No. The 4 Nm brake is a holding brake, designed only for keeping the axis stationary when power is removed. All dynamic deceleration must be performed by the servo drive .

Q3: What drives are compatible with this motor?
B&R recommends the following drives for optimal performance :

• ACOPOS: 8V1045

• ACOPOSmulti: 8BVI0028

• ACOPOS P3: 4X5X

Q4: Is the keyed shaft suitable for high-speed applications?
Yes. The 14 mm keyed shaft is designed for speeds up to 9000 RPM maximum and provides reliable torque transmission even under high dynamic loads .

Q5: What is the maximum rotational speed of this motor?
The maximum allowable speed is 9000 RPM .

Q6: Does this motor come with an oil seal?
No. This model is supplied without an oil seal . For applications requiring shaft sealing, consider variants with the oil seal option.