Bonfiglioli C 12 2 P 20.6 P90 B3 Gearbox C122P20.6P90-B3 201410395

The Bonfiglioli C 12 2 P 20.6 P90 B3 gearbox is a planetary gear reducer designed for applications that require high torque density and precise motion control in a compact package. The model designation indicates a C12 planetary unit with a two stage configuration, a 20.6:1 reduction ratio, a P90 input flange, and B3 foot mounting. The part number 201410395 identifies the specific configuration. This gearbox is well suited to industrial automation, material handling, and positioning systems where space is limited but performance requirements are high.

Product Overview

The C series from Bonfiglioli is a range of planetary gearboxes that use multiple planet gears to share the load and deliver high torque in a compact envelope. The C12 model is a mid sized unit within this series, and the two stage configuration allows it to achieve a 20.6:1 ratio while maintaining high efficiency. The P90 input flange provides a standard interface for mounting a motor, and the B3 foot mounting allows the gearbox to be secured to a machine frame or base.

Planetary gearboxes are known for their high power density and torsional rigidity. Because the load is distributed across multiple planet gears, the C12 can transmit high torque without excessive size or weight. This makes it a practical choice for applications where a worm gearbox or parallel shaft gearbox would be too large or too heavy for the available space.

Key Features

• Planetary gear design for high torque density and compact size

• 20.6:1 reduction ratio for precise speed control

• Two stage configuration for balanced efficiency and ratio

• P90 input flange for standard motor mounting

• B3 foot mounting for secure installation on machine frames

• High torsional rigidity for accurate positioning

• Smooth operation with low backlash characteristics

• Suitable for continuous industrial duty

Technical Specifications

• Model: C 12 2 P 20.6 P90 B3

• Part number: 201410395

• Gearbox type: Planetary

• Number of stages: Two

• Reduction ratio: 20.6:1

• Input flange: P90

• Mounting: B3 foot mounting

• Housing material: High strength cast iron or steel depending on configuration

• Lubrication: Grease or oil depending on configuration

• Duty: Continuous industrial duty

Performance and Efficiency

The planetary configuration of the C12 gearbox provides several performance advantages. Because multiple planet gears share the load, the stress on each gear tooth is reduced, which contributes to long gear life and quiet operation. The two stage design allows the gearbox to achieve a 20.6:1 ratio with high efficiency, typically higher than comparable worm gearboxes. This efficiency translates into lower energy consumption and less heat generation during operation.

The high torsional rigidity of the planetary design makes the C12 well suited to applications that require accurate positioning. When the gearbox is coupled to a servo motor or a precision control system, the low backlash characteristics help maintain positioning accuracy. The compact size of the unit also reduces the inertia of the drive system, which can improve dynamic response in automated machinery.

Applications

The Bonfiglioli C12 2P 20.6 P90 B3 gearbox is suitable for a wide range of industrial applications. It is commonly used in automated assembly systems, material handling equipment, packaging machinery, robotics, and positioning tables. The 20.6:1 ratio is particularly useful in applications where a moderate speed reduction is needed while maintaining high torque output. The B3 foot mounting makes it easy to install on machine frames and bases.

The P90 input flange allows the gearbox to be paired with a variety of motors, including servo motors and standard three phase motors. This flexibility makes the C12 a versatile choice for machine builders who need a compact and efficient reduction solution. The gearbox can also be used in applications that require frequent starting and stopping, provided that the duty cycle and thermal capacity are properly considered.

Installation Guidelines

Installation of the C12 gearbox should begin with a careful review of the mounting dimensions and the alignment requirements. The B3 foot mounting should be secured to a rigid base that can withstand the torque reaction during operation. The input motor should be aligned with the P90 flange to ensure proper engagement and to avoid excessive loads on the input bearings. Couplings and shaft connections should be fitted according to the manufacturer recommendations.

After installation, the gearbox should be checked for smooth rotation and proper lubrication. A brief run in period without load helps confirm that the assembly operates correctly. Any unusual noise, vibration, or temperature rise should be investigated before the equipment is placed into full service. Electrical connections to the motor and control system should be made by qualified personnel following local regulations.

Maintenance Recommendations

Regular maintenance helps ensure the long term reliability of the C12 gearbox. Lubrication should be checked and replenished according to the recommended schedule. The condition of the lubricant should be inspected for signs of contamination or breakdown, and the lubricant should be replaced if necessary. Seals and bearings should be checked periodically, and any signs of leakage or abnormal noise should be addressed promptly.

The exterior of the gearbox should be kept clean to support heat dissipation. In environments with dust or moisture, additional protection measures may be needed to prevent contamination. Following a consistent maintenance schedule helps avoid unexpected downtime and extends the operating life of the gearbox. Proper record keeping of maintenance activities also helps identify trends that may require attention.

Selection Considerations

When selecting the C12 2P 20.6 P90 B3 gearbox, engineers should consider the required output torque, the input speed, the duty cycle, and the environmental conditions. The 20.6:1 ratio is fixed, so the output speed is determined by dividing the motor speed by 20.6. The available torque depends on the motor power and the efficiency of the gearbox. A service factor should be applied to account for shock loads and starting conditions.

The P90 input flange and B3 foot mounting are standard interfaces that simplify integration into many machine designs. However, the specific motor and mounting arrangement should be checked to ensure compatibility. For applications that require very low backlash or high positioning accuracy, the gearbox should be selected with appropriate precision grade and verified against the application requirements.

Conclusion

The Bonfiglioli C12 2P 20.6 P90 B3 gearbox offers a compact and efficient planetary reduction solution with a 20.6:1 ratio, P90 input flange, and B3 foot mounting. Its high torque density, low backlash characteristics, and two stage design make it suitable for industrial automation, material handling, and positioning systems. With proper installation and maintenance, this gearbox provides reliable performance and long service life.