Bonfiglioli 0.09 kW 90 Min Motorreductor BN 27 C 4

The Bonfiglioli 0.09 kW 90 minutes motorreductor BN 27 C 4 is a low power integrated drive unit that combines a small three phase motor with a matched gearbox. The BN 27 C 4 designation identifies the motor frame and configuration. The 0.09 kW rating places the unit in the low power range suitable for small machines and auxiliary functions. The gearbox reduces the motor speed to a low output speed, which makes the unit useful for slow feeding and conveying duties.

Product Overview

The BN series is a well established range of Bonfiglioli three phase motors used in industrial drive systems. The frame 27 size is compact and fits machines with limited mounting space. The motor includes a stator, rotor, shaft, bearings, terminal box, and cooling provisions. The gearbox uses a matched gear design to reduce speed and increase torque. The integrated assembly simplifies installation because the motor and gearbox are aligned at assembly.

The output speed is described in terms of minutes, which refers to the time required for one output revolution. A 90 minute output speed indicates a very slow rotation, suitable for applications that require slow, steady movement with high torque multiplication. The exact output speed depends on the motor speed and the gearbox ratio.

Construction and Design

The motor housing supports the internal components and provides mounting points. The stator windings are insulated for industrial operation. The rotor is mounted on a shaft supported by bearings selected for the expected loads. 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. The housing design supports heat dissipation and structural strength.

Performance Characteristics

The 0.09 kW motor provides low power input suitable for small machines and auxiliary drives. The gearbox reduces the motor speed to a very low output speed with high torque multiplication. The gear motor 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. Correct lubrication and installation help maintain stable performance and long service life.

Applications

The Bonfiglioli BN 27 C 4 gear motor is suitable for small conveyors, packaging machines, labeling equipment, rotary feeders, and general industrial machinery. The very low output speed makes it useful in applications that require slow, steady movement. The compact size and low power rating make the unit suitable for machines where space is limited.

The integrated design simplifies installation and reduces the number of separate transmission components. The unit can be paired with standard control devices such as contactors and overload relays. 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 gear motor. The unit should be mounted on a rigid base that can withstand the torque reaction. Mounting bolts should be tightened to the recommended torque. The output shaft should be aligned with the driven equipment to avoid excessive radial and axial loads. Couplings should be fitted according to the manufacturer recommendations and checked for alignment.

Electrical connections should be made by qualified personnel following local regulations. The supply voltage and frequency must match the motor rating. The direction of rotation should be verified before connecting the load. Proper grounding is essential for safe operation. After installation, a short run without load helps confirm that the assembly operates smoothly and without abnormal noise or vibration.

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 BN 27 C 4 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 Bonfiglioli 0.09 kW 90 minutes motorreductor BN 27 C 4 offers a compact low power drive solution with high reduction and steady torque transmission. Its integrated construction makes it suitable for small conveyors, feeders, and industrial machinery. With correct installation and maintenance, the gear motor provides dependable performance and long service life.