Bonfiglioli RAO 50/DC 1/96.9 Gearbox
Product Overview
The Bonfiglioli RAO 50/DC 1/96.9 is an industrial right angle gearbox intended for speed reduction and torque transmission. The model reference identifies the RAO 50 size, DC configuration, and a ratio of 1 to 96.9. The high ratio makes the unit suitable for applications requiring low output speed and high torque from a standard motor input.
The gearbox is used in conveyors, mixers, processing equipment, and general industrial machinery. Correct selection depends on output torque, input speed, duty cycle, mounting position, and environment. The unit should be installed by qualified personnel and according to technical documentation.
Construction and Mechanical Design
The right angle gearbox contains a housing, gear stages, shafts, bearings, and sealing elements. The right angle arrangement transmits torque between shafts that are not in line. The housing supports the bearing arrangement and protects internal parts from contamination. Seals retain lubricant and reduce the entry of dust and moisture.
Installation requires a clean and rigid mounting surface. The gearbox should seat without distortion. Fasteners must be tightened to the specified torque and checked after initial operation. Shaft connections should be aligned carefully. Excessive overhung load can affect bearing life.
Ratio and Load Planning
The ratio 1 to 96.9 defines the relationship between input speed and output speed. The designer should confirm that the output speed and torque match the driven machine. Starting torque, peak torque, and shock loads should be considered. The high ratio means the output shaft turns slowly with high torque.
The DC configuration identifies specific mounting and interface details. The motor and driven machine connections must match the gearbox. Incorrect adaptation can cause vibration, misalignment, or damage.
Installation and Commissioning
Before installation, the gearbox should be inspected for damage and the identification details checked. The shaft and mounting surfaces should be clean. Alignment with the motor and driven machine should be verified. Guards should protect rotating parts.
Commissioning should begin with a low load run where possible. Rotation direction, noise, vibration, leakage, and temperature should be checked. The lubricant level should be confirmed according to the mounting position.
Lubrication and Thermal Conditions
Lubrication reduces friction and wear and helps remove heat from the gear mesh and bearings. The specified lubricant type and quantity must be used. The mounting position determines the correct oil level and plug arrangement. Fill, level, and drain points should remain accessible.
Operating temperature should remain within the intended range. The housing should have adequate air flow. Excessive temperature can indicate overload, incorrect lubricant, or inadequate cooling.
Operation and Monitoring
During operation, the gearbox should run smoothly within the designed speed and torque range. Operators should monitor noise, vibration, temperature, and leakage. A change in running sound can indicate wear or lubrication problems.
Load changes can affect gearbox life. Increased throughput, higher torque, frequent reversing, or shock loading should be reviewed against the original selection.
Protection and Maintenance
Reliability depends on correct mounting, suitable lubrication, and protection from contamination. Seals should be inspected for damage. The gearbox should not be exposed to water, dust, or corrosive substances beyond its intended protection level.
Maintenance should include periodic inspection of lubricant, seals, fasteners, and housing condition. Before service, the machine must be isolated and secured against rotation.
Integration and Selection Summary
The RAO 50/DC 1/96.9 gearbox can be integrated into industrial machines that require high ratio right angle speed reduction.
Selection should confirm the model RAO 50/DC, ratio 1/96.9, shaft arrangement, torque capacity, mounting position, and lubrication requirements.
