B&R 8LSA46.DB030S300-3 400VAC 3000RPM 7.7Nm Servo Motor with 8Nm Brake

The B&R 8LSA46.DB030S300-3 is a 400 VAC synchronous servo motor designed for machine axes that need multi-turn absolute feedback, a keyed mechanical connection, and holding capability after drive power is removed.

This motor delivers 7.700 Nm nominal torque at 3000 rpm. The 19 mm keyed shaft is suitable for shaft couplings, timing-belt pulleys, gearboxes, and indexing assemblies where torque must be transferred through a positive mechanical connection.

The integrated 8.00 Nm holding brake is intended to retain a stopped axis in position during a controlled stop or power-off condition. This configuration is appropriate for vertical mechanisms, transfer axes, rotary handling units, and positioning assemblies where free movement of the load is not acceptable.

The EQI 1331 FS EnDat 2.2 multi-turn encoder provides absolute feedback across multiple motor revolutions. Before replacement, confirm the encoder type, brake requirement, shaft-key geometry, flange dimensions, centering fit, and compatibility with the installed servo drive.

This product is a synchronous servo motor. It should not be described as a gearbox, PLC, power supply, X2X Link device, internal I/O module, or servo drive.

Key Features

400 VAC synchronous servo motor

3000 rpm nominal speed

7.700 Nm nominal torque

10.000 Nm stall torque

8.00 Nm holding brake

EnDat 2.2 multi-turn encoder

Keyed 19 mm shaft

100 mm square flange

95 mm centering diameter

Self-cooled construction

Suitable for cabinet-connected servo systems

Typical Applications

Vertical positioning axes

Servo-driven transfer units

Rotary indexing systems

Packaging machinery

Assembly equipment

Material handling mechanisms

Printing and converting equipment

Industrial servo motor replacement projects

Installation Notes

Confirm the original motor model, encoder type, brake configuration, shaft-key dimensions, flange size, and centering diameter before replacement.

The holding brake is intended to hold a stationary axis. It should not be used as the main method for repeated dynamic braking.

Use a compatible servo drive and verify the EnDat multi-turn feedback settings, brake wiring, motor cable arrangement, and machine parameters before commissioning.

FAQ

Q

Does 8LSA46.DB030S300-3 include a holding brake

A

Yes it includes an 8.00 Nm holding brake

Q

What encoder does this motor use

A

It uses an EQI 1331 FS EnDat 2.2 multi-turn encoder

Q

What is the nominal speed

A

The nominal speed is 3000 rpm

Q

What is the nominal torque

A

The nominal torque is 7.700 Nm

Q

Is the shaft smooth or keyed

A

It has a keyed 19 mm shaft

Q

Can this page include 8LSA46.DB030S100-3

A

No the S100 version has no holding brake and should remain on a separate product page