Bonfiglioli VF49A-28-P80-B14 Worm Gearbox
The Bonfiglioli VF49A-28-P80-B14 worm gearbox is a right angle reducer from the VF49A series configured with a P80 B14 motor interface and a 28 ratio code. The VF49A size is designed for moderate torque requirements and is suitable for conveyors, packaging machinery, and general industrial equipment. The P80 B14 interface allows a standard IEC 80 frame motor with a B14 flange to be mounted directly to the gearbox. The 28 ratio code defines the reduction relationship between input and output speed.
Product Overview
The VF series uses a worm and wheel design to achieve high reduction ratios in a single stage. A hardened and ground worm shaft drives a bronze worm wheel, producing smooth motion and low noise. The VF49A size offers a practical balance between torque capacity and compact dimensions. The 28 ratio provides a moderate speed reduction for applications that require controlled output speed and increased torque.
The P80 B14 motor interface defines the flange and mounting arrangement for the motor. Direct mounting simplifies alignment and reduces the number of separate transmission components. The gearbox housing supports the worm shaft and wheel with sufficient rigidity for stable gear mesh. Bearings support the radial and axial forces generated by the worm gear action.
Construction and Design
The worm shaft is hardened and ground for smooth contact and reduced wear. The bronze worm wheel provides favorable friction characteristics and contributes to quiet operation. The housing maintains correct alignment between the worm and wheel under load. The P80 B14 interface is machined for precise motor mounting. Seals protect the lubricant and bearings from dust and moisture.
Lubrication is contained within the housing and distributed to the gear mesh and bearings during operation. The output shaft is machined to accept couplings, pulleys, sprockets, or other driven components. The housing design supports heat dissipation, which is important in worm gearboxes because sliding contact generates heat. The unit should be selected with an appropriate service factor for the application.
Performance Characteristics
The VF49A gearbox provides smooth and quiet power transmission across a range of input speeds. The sliding contact between the worm and wheel produces gradual torque transfer, which helps reduce shock in driven equipment. The reduction ratio of the unit determines the output speed and torque multiplication. The P80 B14 motor interface allows the gearbox to be paired with a matching motor for a compact drive package.
Worm gearboxes have a self locking tendency under many load conditions. This can be useful when the load must remain in position after the motor stops. However, self locking is not guaranteed in all conditions and should be verified for the specific application. Efficiency depends on the ratio, load, speed, and lubrication. Thermal capacity should be checked for continuous duty or high ambient temperatures.
Applications
The Bonfiglioli VF49A-28-P80-B14 gearbox is suitable for belt conveyors, roller conveyors, packaging machines, labeling equipment, small mixers, and general industrial drives. The compact size allows the unit to fit into machine frames where space is limited. The right angle layout allows the motor to be positioned at 90 degrees to the driven shaft, which can save space in compact equipment.
The P80 B14 interface supports direct motor mounting, which is common in modular conveyor systems and compact drive packages. The gearbox can be paired with a matching motor for a complete drive assembly. When variable speed operation is required, the motor and gearbox should be evaluated together to confirm that the speed range and torque are suitable.
Installation Guidelines
Installation should begin with a check of the nameplate data and a visual inspection of the gearbox. 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 motor should be aligned with the P80 B14 interface so that the motor shaft engages the gearbox input correctly. The output shaft should be aligned with the driven equipment to avoid excessive loads on bearings and seals.
After installation, the gearbox should be checked for smooth rotation and correct oil level. A short run without load helps confirm that the assembly operates correctly. Any unusual noise, vibration, or temperature rise should be investigated before full service. Electrical connections to the motor should be made by qualified personnel following local regulations.
Maintenance Recommendations
Regular maintenance supports reliable performance and long service life. Oil level and oil condition should be checked at recommended intervals. The first oil change should be performed after the initial running in period, and later changes should follow the schedule for the operating conditions. Seals and bearings should be inspected periodically. Leakage, abnormal noise, or vibration should be addressed promptly.
The exterior of the gearbox should be kept clean to support heat dissipation. Adequate airflow around the housing helps maintain stable temperatures. In dusty or humid environments, additional protection may be needed to prevent contamination. 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 VF49A-28-P80-B14 gearbox, engineers should confirm the required output torque, output speed, duty cycle, and environmental conditions. The 28 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 P80 B14 interface must match the selected motor.
The gearbox mounting position should provide adequate support and allow correct lubrication. The output shaft and mounting features should match the driven equipment. For applications that rely on holding or self locking, the load conditions should be evaluated carefully. Correct selection helps ensure smooth operation, stable thermal behavior, and long service life.
Conclusion
The Bonfiglioli VF49A-28-P80-B14 worm gearbox offers a compact reduction solution with a P80 B14 motor interface and smooth worm gear operation. Its construction supports quiet torque transmission and reliable performance in conveyors, packaging machinery, and industrial equipment. With correct installation and maintenance, the gearbox provides dependable operation and long service life.
