Product Short Description
Product Name: B&R 8LSA46 Series Synchronous Servo Motor
Model Series: B&R 8LSA Medium Frame Servo Motor Series
Product Introduction: A medium-sized high-performance permanent magnet synchronous servo motor, matched with B&R servo drive system. It is designed for medium-load precision motion control scenarios, featuring large output torque, stable dynamic response and strong load adaptability.
Description
- Rated Power: 4.5 kW
- Frame Size: 46 mm frame
- Rated Voltage: 400 VAC three-phase industrial power supply
- Protection Class: IP65
- Insulation Class: F
- Encoder Type: Integrated multi-turn absolute encoder
- Brake Configuration: No built-in brake
- Shaft Structure: Standard keyway shaft
- Fast dynamic response, supporting frequent start-stop and forward-reverse rotation
- Absolute encoder realizes power-off position memory, no zero return after power-on
- Built-in winding temperature monitoring and overheat protection function
- Strong overload capacity, adapting to instantaneous impact load
- Optimized electromagnetic design to reduce torque ripple
- Fully compatible with B&R servo drive and automation control platform
- Rated Torque: 18 Nm
- Peak Torque: 54 Nm
- Rated Speed: 3000 rpm
- Maximum Speed: 5000 rpm
- Position Repeatability: ±0.01 mm
- Overload Capacity: 3 times peak torque instantaneous output
- MTBF: ≥ 450,000 hours
- Motor housing: Die-cast aluminum alloy with surface anti-rust treatment
- Stator core: Cold-rolled oriented silicon steel sheet
- Rotor: High-coercivity neodymium iron boron permanent magnet
- Motor shaft: Alloy structural steel with surface hardening treatment
- Internal winding: High-temperature resistant polyester imide enameled wire
- Sealing parts: Nitrile rubber oil-proof and dust-proof sealing ring
- Medium-size flange mounting structure, high structural rigidity
- Separate layout of power connector and encoder connector for convenient wiring and maintenance
- Internal fully sealed design, dust-proof and water splash-proof
- Reinforced bearing structure to adapt to large radial and axial load
- Optimized heat dissipation rib design on the housing to enhance natural heat dissipation efficiency
- Integrated internal wiring, neat layout and strong anti-interference ability
This product adopts permanent magnet synchronous servo motor control principle. The servo drive outputs adjustable frequency and voltage three-phase AC to the stator winding to generate a rotating magnetic field, which drives the permanent magnet rotor to rotate and output mechanical torque. The built-in absolute encoder collects the real-time position, speed and rotation angle of the rotor, and feeds back data to the upper servo drive to form a full closed-loop control. The control system adjusts the output electrical parameters in real time according to the operating commands, so as to complete high-precision speed regulation, positioning and torque output. The temperature sensor monitors the internal temperature in real time and triggers protection action when over temperature occurs.
- Large output torque and strong load capacity, suitable for medium-load working conditions
- Absolute encoder eliminates zeroing operation, simplifying equipment commissioning and restart
- Excellent dynamic performance, suitable for high-frequency reciprocating motion
- High structural rigidity, strong resistance to vibration and impact
- Good heat dissipation performance, supporting long-time continuous heavy-load operation
- Standard industrial interface, easy system integration and after-sales maintenance
Machine tool equipment, automated production lines, logistics handling machinery, lifting positioning equipment, rubber and plastic machinery, metal processing equipment, intelligent storage equipment
- Use standard flange for fixed installation, ensure the mounting base has sufficient rigidity
- Strictly control the coaxiality between motor shaft and load shaft to prevent additional shear force
- Install wiring in accordance with the standard phase sequence, and do not mix power line and signal line
- The surrounding environment shall be kept ventilated, and heat accumulation is prohibited
- For long-distance transmission, use shielded cables for encoder signal lines
- Long-term operation under rated load is allowed; continuous overload operation is prohibited
- Regularly inspect the sealing performance of the motor and the wear of the shaft keyway
- Avoid working in environments with high temperature, high humidity and corrosive gas for a long time
- Do not disassemble the motor body and internal encoder privately
- Cut off the power supply completely before maintenance and wiring operation
- If abnormal vibration or noise occurs during operation, stop the machine for inspection immediately






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