How Does An Air Rivet Gun Work?

An air rivet gun, also known as a pneumatic pop rivet gun or an air-powered pop rivet gun, is a specialised handheld tool used to install rivets in various applications. They utilise compressed air as their power source to drive the rivet-setting process efficiently. Here is how it works:

• Rivet Insertion: Insert the mandrel part of a rivet into the tool’s nosepiece. Then, insert the rivet body into the pre-drilled hole of the materials you want to join.
• Trigger Activation: When the operator pulls the trigger, compressed air is released into the tool. This creates a high-pressure environment.
• Rivet Setting: High-pressure air pushes a piston in the gun. This piston presses against the hydraulic oil*, creating pressure in a chamber. The pressure then activates the jaw mechanism. This pulls the rivet mandrel, expanding the rivet body and clamping the materials together.
• Mandrel Extraction: Some rivet pneumatic guns are made to collect the used mandrel. They then eject it into a removable container for easy disposal.

*Most air-powered rivet guns nowadays are air-hydraulic type. A few air tools are air-powered only, such as the FAR RAC83 Air Rivet Gun.

Advantages of Air Hydraulic Rivet Guns

• Speedy Installation: Air rivet guns excel in speed. They efficiently expel spent mandrels into a detachable container, reducing downtime and boosting productivity.
• Superior Traction Power: Air rivet guns often offer greater traction power than cordless rivet guns. This makes them ideal for installing large-diameter rivets, ensuring a secure connection.
• One-Handed Operation: Some air tools use air suction to hold rivets in the nose. This allows for easy one-handed operation. This feature simplifies the process and enhances efficiency.
• Ease of Use: Unlike manual rivet tools that require a lot of effort, air tools are easy to use and less tiring. They streamline the installation process, reducing operator fatigue.
• Continuous Operation: With air rivet guns, there’s no need to worry about battery life or replacement. These tools rely on continuous compressed air for consistent operation.

Considerations When Using a Pneumatic Rivet Gun

To ensure the safe and effective use of your air tool, consider the following:

• Correct Nosepiece Selection: Always choose the right-sized nosepiece to match your rivets, ensuring a secure fit.
• Secure Nosepiece: Before use, tightly secure the nosepiece with a spanner to prevent mishaps during operation.
• Proper Air Pressure: Adjust air pressure using an air regulator according to the tool’s specifications. Overpressurisation can damage the tool, so adhere to the manufacturer’s guidelines.
• Safety First: Safety is paramount. Equip the tool with a mandrel collector before operation, and empty it regularly to prevent jams. Wear eye protection and follow all manufacturer safety instructions.
• Test Run: Conduct a test run before high-production tasks.

Maintaining Your Air Riveter for Peak Performance

For best results and longevity, follow these maintenance tips:

• Regular Lubrication: Keep the tool lubricated by adding a few drops of air tool oil into the air inlet.
• Hydraulic Oil Maintenance: Follow the manufacturer’s instructions for maintaining the hydraulic oil level. Signs of low oil include difficulty installing rivets in one stroke or incomplete rivet insertion.
• Frequent Cleaning: Regularly clean the jaws and nose area. This helps prevent rivet swarf buildup and keeps the jaw mechanism working well.

Please read the Mastering Air Rivet Guns: Tips and Maintenance blog for more information on air rivet guns.