Bonfiglioli RAN 24/SB B3 Bevel Gearbox 1:1

The Bonfiglioli RAN 24/SB B3 Bevel Gearbox is a right angle gear unit intended for compatible industrial drive systems. It is identified by the RAN 24/SB reference, a 1:1 ratio, a B3 mounting position, and a 15/16 inch shaft diameter. The RAN series is designed for right angle transmission in synchronized drive arrangements and offers multiple shaft configurations and exact gear ratios in addition to 1:1.

The RAN 24 size is rated for approximately 80 Nm of torque. The bevel gear design provides a right angle drive with high positioning accuracy and minimal mounting space. The gearbox is intended for applications where two shafts must rotate at the same speed or in a defined relationship.

Mechanical Function

The RAN 24/SB transfers torque between the input and output shafts through its bevel gear stage. The 1:1 ratio means that input and output speeds are equal, with the direction of rotation determined by the shaft arrangement. The right angle layout allows the driven shaft to be positioned at 90 degrees to the input shaft.

The gearbox should not be exposed to loads beyond its specified torque rating. Shock loads, misalignment, and excessive overhung loads can affect bearings and seals. The machine design should provide adequate support for the gearbox and connected shafts.

Reference Verification

The RAN 24/SB reference, the 1:1 ratio, the B3 mounting position, and the 15/16 inch shaft diameter should be checked against the project requirements. The complete identification includes shaft arrangement and mounting details that must match the application.

Compatibility includes the input shaft, output shaft, mounting holes, and available space. If the gearbox is part of an existing machine, the original mounting position and shaft arrangement should be reviewed.

Mechanical Installation

The gearbox should be mounted on a rigid structure that can support the torque and load. The mounting surface should be clean and flat. Fasteners should be tightened to the specified values. The gearbox should not be distorted by uneven mounting surfaces or excessive bolt force.

Shaft alignment should be checked carefully. Couplings should be aligned within the limits allowed by the gearbox design. Belt, chain, or gear connections should follow the machine design and the product documentation.

Lubrication and Sealing

Lubrication is essential for reliable gear operation. The correct lubricant type and quantity depend on the gearbox size, mounting position, and operating conditions. The user should follow the product documentation for lubricant selection and service intervals. Some RAN sizes are supplied with long life lubrication.

Seals protect the lubricant and exclude contamination. During inspection, the user should check for leakage around shafts and joints.

Commissioning

Commissioning should begin with a mechanical inspection. Mounting bolts, couplings, and guards should be checked. The lubricant level should be confirmed. The gearbox should be run at low load where possible to observe noise, vibration, and leakage.

The direction of rotation should be confirmed at both shafts. The driven machine should be checked for smooth operation. Commissioning records should include the reference, ratio, shaft arrangement, and test results.

Diagnostics and Maintenance

If the gearbox runs noisily, the user should check alignment, mounting, lubrication, and load conditions. If it overheats, the load, duty cycle, ambient temperature, and lubrication should be reviewed.

Routine maintenance should include checking for leakage, noise, vibration, and loose fasteners. The lubricant should be inspected and changed according to the service plan.

Application Value

The RAN 24/SB B3 gearbox with 1:1 ratio supports synchronized right angle transmission in compatible machinery. It can be applied in conveyor, material handling, and other industrial drive arrangements where a bevel gear unit fits the design.

Summary

The Bonfiglioli RAN 24/SB B3 Bevel Gearbox is intended for compatible mechanical power transmission with a 1:1 ratio. Correct reference verification, mounting, shaft alignment, lubrication, commissioning, and maintenance are essential.