A clevis joint is a simple mechanical connection used to attach a rod or linkage to another component while allowing limited angular movement.

Clevis joints are commonly used in hydraulic cylinders, control linkages, agricultural machinery and industrial equipment where a secure but flexible connection is required.

In this article, we’ll consider what clevis joints are, how they work, and where they are used.

What Is A Clevis Joint?

A clevis joint is a simple yet highly versatile type of coupling in which the mating component – which could be a rod or other linkage - snugly fits between the forks, where it is held in place by a clevis pin, spring pin, or clips. A clevis joint can be used to connect a rod to an eye, a rod end, or a ball joint.

Clevis joints are designed to provide a flexible yet secure connection between two components. They are used in various applications, but their primary purpose is to fasten loads to construction equipment, pickup trucks, trailers, and agricultural machinery. Whether they are used to secure a plough to a tractor or link a control rod in a manufacturing machine, clevis joints offer a reliable and durable solution.

Parts of a Clevis Joint

A clevis joint consists of several simple components that work together to create a secure yet flexible mechanical connection.

Typical clevis assemblies include the following parts:

Clevis Fork

The clevis fork is the main body of the joint and features two parallel prongs with aligned holes. The connected component fits between these prongs and is secured using a clevis pin.

Clevis Pin

The clevis pin passes through the aligned holes in the fork and the connected component. This pin carries the load in shear while allowing the joint to pivot or rotate slightly.

Retaining Clip or Cotter Pin

To prevent the clevis pin from sliding out during operation, a retaining clip, cotter pin, or spring clip is typically used to secure it in position.

Threaded Shank or Rod Connection

Many clevis joints include a threaded shank that allows them to be attached to rods, linkages, or hydraulic cylinder ends.

What Are The Advantages Of Clevis Joints?

The main advantage of using clevis joints is the way that they transmit loads.  A clevis joint works by passing a clevis pin through aligned holes in the forked clevis and the connected component. The pin carries the load in shear while allowing limited pivoting movement. . This design allows for a smoother transfer of dynamic loads. When machinery or equipment is subjected to different or fluctuating forces, clevis joints help to prevent sudden shocks and jolts, enhancing overall stability and safety.

Furthermore, clevis joints offer additional benefits for a variety of industries and applications:

• Versatility: Clevis pins are highly versatile and can be used in a variety of applications, from agricultural machinery to industrial equipment.

• Ease of installation: Clevis pins are simple to install and require minimal tools or expertise, making them a convenient choice for quick assembly and disassembly.

• Secure connection: Because they provide a secure and reliable connection between two components, clevis pins reduce the risk of accidental disconnection or failure, thereby safeguarding equipment, goods, and people.

• Adjustability: Clevis pins are adjustable, allowing connections or linkages to be fine-tuned, which is essential in many applications.

• Cost-effective: Clevis pins are a cost-effective solution as they are inexpensive to purchase yet deliver exceptional and durable performance, making them an economical choice for connecting and securing parts in a variety of industries.

Common Applications of Clevis Joints

Clevis joints are widely used in machinery where a secure pivoting connection is required.

Typical applications include:

• Hydraulic cylinders in agricultural and construction machinery
• Control linkages in industrial equipment
• Brake and clutch linkages in automotive systems
• Trailer and towing mechanisms
• General mechanical linkage systems

Clevis Joint vs Rod End

Clevis joints and rod end bearings are both used to connect mechanical linkages, but they serve slightly different purposes.

Clevis joints provide a simple forked connection secured with a pin, making them ideal for applications where movement occurs in a single plane.

Rod end bearings, by contrast, incorporate a spherical bearing that allows angular misalignment and multi-directional movement.

Because of this, rod ends are often used in precision linkages and dynamic systems where greater flexibility is required.

Find Out More

For expert advice on how BTL-UK can help your business, please download our free guide ‘The Manufacturer’s Guide to Overcoming Distribution Problems’ or give us a call on 01233 663340.