B&R 8LSAA4.D9045S100-3 400VAC 4500RPM 2.8Nm Servo Motor EnDat Keyed Shaft

The B&R 8LSAA4.D9045S100-3 is a 400 VAC synchronous servo motor designed for compact machine axes that require multi-turn position feedback and a keyed shaft for positive torque transmission.

This 4500 rpm motor delivers 2.800 Nm nominal torque in a 70 mm square flange format. The 14 mm keyed shaft is suitable for pulley drives, couplings, timing-belt systems, and compact gearbox inputs where a secure mechanical connection is required.

The EQI 1131 FS EnDat 2.2 multi-turn encoder provides absolute position feedback across multiple motor revolutions. This configuration is suitable for machine axes where the connected servo drive must retain multi-turn position data during controlled restart procedures.

This S100 configuration does not include a holding brake. It is best suited to horizontal axes, supported rotary mechanisms, conveyor drives, and machine sections where the load does not need to be mechanically held after power removal.

Key Features

400 VAC synchronous servo motor

4500 rpm nominal speed

2.800 Nm nominal torque

3.200 Nm stall torque

EnDat 2.2 multi-turn encoder

No holding brake

Keyed 14 mm shaft

70 mm square flange

60 mm centering diameter

Self-cooled motor construction

Single-cable hybrid connection

Typical Applications

Servo-driven conveyors

Packaging machinery

Rotary indexing systems

Timing-belt positioning axes

Assembly equipment

Labeling machinery

Printing and converting systems

Industrial servo motor replacement projects

Installation Notes

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

This model has no holding brake. Do not use it for unsupported vertical loads unless the machine includes an independent mechanical holding method.

Use a compatible B&R servo drive and verify the EnDat multi-turn encoder configuration before commissioning.

FAQ

Q

Does 8LSAA4.D9045S100-3 include a holding brake

A

No this model does not include a holding brake

Q

What encoder does this motor use

A

It uses an EQI 1131 FS EnDat 2.2 multi-turn encoder

Q

Is the shaft smooth or keyed

A

It has a keyed 14 mm shaft

Q

What is the nominal torque

A

The nominal torque is 2.800 Nm

Q

What is the nominal speed

A

The nominal speed is 4500 rpm