Motore Riduttore Bonfiglioli 1.5 kW BN90LA4 Adjustable Gear Motor

The Motore Riduttore Bonfiglioli 1.5 kW BN90LA4 adjustable gear motor is an integrated drive unit that combines a frame 90 three phase motor with a matched gear reducer. The BN90LA4 designation identifies the frame 90 motor with a four pole configuration and a long stator design. The 1.5 kW rating places the motor in the medium power range suitable for general industrial duties. The adjustable configuration allows the drive to be adapted to different operating conditions when paired with a suitable control device.

Product Overview

The BN series is a well established range of Bonfiglioli three phase motors used in industrial drive systems. The frame 90 size provides a balance between compact dimensions and power capacity. The four pole configuration produces a moderate speed suitable for many general applications. The 1.5 kW rating provides enough power for conveyors, mixers, and packaging equipment. The gearbox reduces the motor speed and increases output torque.

The adjustable designation indicates that the drive can be adapted to different operating requirements through the control method or mechanical adjustment features. The exact adjustment method depends on the specific build and should be confirmed with the product documentation. The motor includes a stator, rotor, shaft, bearings, terminal box, and cooling provisions. The gearbox includes the gear stages, bearings, lubrication, and seals.

Construction and Design

The motor housing supports the stator, rotor, bearings, and shaft. The stator windings are insulated for industrial operation. The rotor is mounted on a shaft supported by bearings selected for the expected loads. The fan and fan cover provide cooling airflow over the housing. The terminal box provides a safe connection point for the electrical supply. The motor shaft connects to the gearbox input through the matching interface.

The gearbox housing supports the gear stages and bearings with sufficient rigidity for stable mesh. Lubrication is contained within the housing and distributed to the gears and bearings during operation. Seals protect the internal components from dust and moisture. The output shaft is machined to accept couplings, pulleys, sprockets, or other driven components. Correct alignment between the gear motor and driven equipment is important for long bearing and seal life.

Performance Characteristics

The BN90LA4 motor provides the input power and speed for the assembly. The four pole configuration produces a moderate speed, and the gearbox reduces this speed according to its ratio. The output torque is increased in proportion to the reduction ratio, subject to gearbox efficiency and torque limits. The 1.5 kW rating provides enough power for medium duty applications.

The integrated drive should be selected with an appropriate service factor for the duty cycle. Starting loads, shock loads, and continuous operation affect the thermal and mechanical capacity of the assembly. The motor should be protected against overload and abnormal supply conditions. The gearbox should be checked for thermal capacity when operating at high duty cycles or high ambient temperatures.

Applications

The Bonfiglioli BN90LA4 1.5 kW gear motor is suitable for belt conveyors, screw conveyors, mixers, packaging machines, labeling equipment, and general industrial machinery. The medium power rating makes the unit useful in applications that require more torque than small gear motors can provide. The adjustable configuration allows the drive to be adapted to different operating requirements.

The motor can be connected to standard industrial supply arrangements according to the nameplate rating. The geared drive can be used in applications that require frequent starting and stopping, provided that the duty cycle and thermal capacity are considered. Correct selection helps ensure reliable operation and long service life.

Installation Guidelines

Installation should begin with a check of the nameplate data and a visual inspection of the assembly. The geared motor should be mounted on a rigid base that can withstand the torque reaction. Mounting bolts should be tightened to the recommended torque. The motor should be connected according to the terminal diagram for the available supply voltage. The output shaft should be aligned with the driven equipment to avoid excessive radial and axial loads.

After installation, the assembly should be checked for smooth rotation and correct oil level in the gearbox. A short run without load helps confirm that the motor and gearbox operate correctly. The direction of rotation should be verified before connecting the load. Any unusual noise, vibration, or temperature rise should be investigated before full service.

Maintenance Recommendations

Regular maintenance supports reliable performance and long service life. The motor cooling fan and fan cover should be kept clean. The gearbox oil level and oil condition should be checked at recommended intervals. Seals and bearings should be inspected periodically. Leakage, abnormal noise, or vibration should be addressed promptly. Electrical connections should be checked for tightness and signs of overheating.

The exterior of the motor and gearbox should be kept clean to support heat dissipation. Adequate airflow around the assembly helps maintain stable temperatures. In dusty or humid environments, additional protection may be needed. Maintenance records help identify trends and support planned servicing. Following a consistent maintenance schedule reduces the risk of unexpected downtime.

Selection Considerations

When selecting the BN90LA4 1.5 kW gear motor, engineers should confirm the supply voltage, frequency, motor power, output speed, output torque, duty cycle, and environmental conditions. The gearbox ratio and motor speed determine the output speed. The available torque depends on motor power and gearbox efficiency. A service factor should be applied for starting loads, shock loads, and continuous operation.

The motor and gearbox interfaces must match. The mounting arrangement should suit the machine layout and provide adequate support. The output shaft and mounting features should match the driven equipment. Correct selection and installation help ensure smooth operation, stable thermal behavior, and long service life.

Conclusion

The Motore Riduttore Bonfiglioli 1.5 kW BN90LA4 adjustable gear motor offers a medium power integrated drive solution with reliable motor performance and smooth gear reduction. Its construction supports dependable torque transmission in conveyors, mixers, and packaging lines. With correct installation and maintenance, the assembly provides stable performance and long service life.