B&R 8LSA35.DB030S300-3 3000 RPM 2.1 Nm Multi-Turn Servo Motor with Keyed Shaft Brake

The B&R 8LSA35.DB030S300-3 is a compact servo motor configured for applications where the machine must retain both mechanical position and encoder position information after the axis has completed its movement. It combines a 3000 rpm operating speed with 2.10 Nm nominal torque, making it suitable for precision automation stations that require controlled rotation rather than ultra-high-speed motion.

A defining feature of this model is the EQI 1331 FS multi-turn encoder. Unlike a basic single-turn feedback system, this encoder can register the shaft position across many revolutions. This is useful for machinery with indexing sequences, feed travel, rotary tooling or repeated positioning cycles where the controller needs more complete axis-position information.

The motor is fitted with a 4.00 Nm holding brake. When power is removed, the brake helps keep the axis stationary and supports a safer machine stop condition. This configuration is often selected for vertical slides, loading modules, rotating fixtures and other axes that should not move freely during servicing or power interruption.

Its 14 mm keyed shaft provides a fixed drive connection for components such as timing pulleys, sprockets, gearboxes and keyed couplings. The keyed design is useful where the machine repeatedly accelerates and reverses, because it helps transfer torque through a positive mechanical interface instead of relying only on friction clamping.

The single-cable connection layout simplifies motor installation by reducing the number of separate cable routes required between the motor and compatible B&R drive system. For replacement projects, confirm the full motor code, encoder version, brake requirement, shaft type and connector arrangement before ordering.

Key Features

3000 rpm servo motor for stable motion control tasks

2.10 Nm nominal torque for compact industrial axes

EQI 1331 FS multi-turn encoder for extended position tracking

EnDat 2.2 interface for compatible B&R motion systems

4096-revolution multi-turn feedback capability

Integrated 4.00 Nm holding brake for stationary load retention

14 mm keyed shaft for secure drive transmission

Suitable for pulleys, sprockets, gearboxes and keyed couplings

Single-cable motor connection for cleaner machine wiring

Angled swivel connector for easier cabinet and machine routing

IP64 protection class for industrial operating environments

Compact 8LSA35 motor frame for retrofit and replacement projects

Typical Applications

Servo-driven lifting modules

Rotary assembly fixtures

Automatic pallet positioning systems

Packaging machine indexing sections

Carton handling equipment

Labeling and print registration machines

Belt-fed transfer mechanisms

Material feed systems

Rotary tables with controlled stop positions

Machine refurbishment and spare-part replacement work

FAQ

Q: What is the key difference between the DB version and DA version?
A: The DB version uses multi-turn encoder feedback. It can track the motor position across multiple revolutions, while DA versions are generally used for single-turn feedback configurations.

Q: Does this motor include a holding brake?
A: Yes. The 8LSA35.DB030S300-3 includes an integrated 4.00 Nm holding brake.

Q: Is the holding brake used for normal machine deceleration?
A: No. The holding brake is intended to keep the axis in position when power is removed. Normal deceleration should be controlled by the servo drive.

Q: What type of output shaft does this motor use?
A: It uses a 14 mm keyed shaft with a 30 mm shaft length.

Q: Is this motor suitable for vertical motion systems?
A: It can be used in properly engineered vertical applications because it includes a holding brake. Final suitability depends on load size, safety requirements and machine design.

Q: Can this motor replace another 8LSA35 servo motor?
A: It can be considered only after confirming voltage, torque, encoder type, brake configuration, shaft version, flange dimensions and drive parameter compatibility.