Industrial Air Riveter Gun Metal Assembly Systems

1. What is the Air Riveter? How many series and models are there? How do they work and operate? What are their common uses?

WYMA® now offers our two pneumatic riveter lines for wholesale distribution: the Air Rivet Nail Gun series and Air Rivet Nut Gun series.

Our Air Rivet Nail Gun offers multiple models with pulling force ranging from 2350N to 17000N. This series consists of pneumatic riveting tools designed for setting pop rivets. It uses the strong pulling force generated by compressed air to pull the mandrel of the pop rivet until it breaks, causing the rivet body to expand and deform on the back of the workpiece, thus creating a secure riveted joint. This series proves helpful in furniture manufacturing, door and window production, luggage making, automotive interior assembly, and the assembly of other industrial equipment.

The Air Rivet Nut Gun is a series of pneumatic riveting tools designed for setting rivet nuts. Our company produces two products in this series with different drive principles, specifically the pistol-grip air rivet nut gun and the hydraulic air rivet nut gun, which require separate discussion.

The Pistol-grip Air Rivet Nut Gun is a riveting tool powered directly by compressed air. It relies compressed air to drive the air cylinder, generating a longitudinal tension on the screw that pulls the rivet nut. Its working pressure is relatively low and is suitable for applications where high riveting force is not required and space is limited, such as door and window manufacturing, the decoration industry and the luggage industry. Routine maintenance requires only regular lubrication and a clean air source.

The Hydraulic Air Rivet Nut Gun is a riveting tool powered by high-pressure hydraulic oil. Operating at higher pressure than pistol-grip type, it uses compressed air to drive the hydraulic cylinder, generating instantaneous high pressure in the hydraulic oil system, which drives the screw longitudinally, pulling the rivet nut. This air-to-oil pressurization principle enables fast operation and high pressure. It is primarily used for riveting large-diameter, high-strength rivet nuts (such as SS nuts) and is suitable for high loads and continuous, high-intensity operations, such as the automobile manufacturing, shipbuilding and machinery manufacturing industries. Compared with pistol-grip type, daily maintenance also requires attention to the condition of the hydraulic oil.

2. How many types, sizes, and materials of rivets and nuts can these two product series be used with?

Our Pneumatic Pop Rivet Gun series accommodates rivet materials including copper, iron, aluminum, alloy, carbon steel and stainless steel. The compatible rivet types are Blub Tite Rivets, Multi-grip Blind Rivets, Countersink Break Mandrel Rivets, Closed Blind Rivets and Hemlok Blind Rivets. For the Pneumatic Rivet Nut Gun series, WYMA offers self-locking heads (pistol-grip type and hydraulic type) designed for rivet nuts in 7 sizes: M3, M4, M5, M6, M8, M10, M12. When paired with a rivet nut tool, enable fastening of rivet nuts of various dimensions. The compatible rivet nut materials include copper, iron, aluminum, zinc-plated, alloy, carbon steel and stainless steel, while the supported rivet nut types are Hexagon Nuts, Cored Nuts, and Countersunk Nuts.

3. How do I replace the jaws of the rivet nail guns?

The jaws of the pop rivet gun can be replaced using two methods, a traditional one and a quick one, so choose the approach that suits you.

Let us begin with the traditional method. First, use the included wrench to unscrew the outer sleeve. Next, with one hand, hold the nut at the rear end of the spring sleeve using the included wrench, while with the other hand, take another wrench to turn the front end of the clamping sleeve counterclockwise; apply reverse force with both hands to remove the clamping sleeve. After that, take out the old jaw pieces and place the new ones into the clamping sleeve one by one, making sure each piece is positioned correctly. When installing the third jaw piece, you may use tweezers and carefully check whether the jaw piece positions align. Once confirmed correct, screw the clamping sleeve with the installed jaw pieces back onto the spring sleeve, and finally reattach the outer sleeve to complete the replacement.

Now is the quick method. First, unscrew the outer sleeve, then pull the quick-change slide sleeve backward to disengage it from the groove. Next, directly unscrew the clamping sleeve, remove the old jaw pieces, and insert the new ones, again ensuring each piece is placed correctly. When installing the third jaw piece, use tweezers and observe whether the jaw piece positions match. After installation, screw the clamping sleeve back onto the spring sleeve, pull the quick-change slide sleeve backward once more, and let it click into the groove of the clamping sleeve at the most fitting position. Finally, reattach the outer sleeve to finish the replacement.

4. I encountered a situation where the rivet nut did not automatically retract. How can I solve this problem?

When using the rivet gun for the first time after purchase, before properly adjusting it, you might encounter a situation where the nut doesn't automatically retract. This is usually due to excessive stroke or the material being riveted being too thick, preventing the rivet gun from completing a effective single work. Simply reducing the stroke will solve the problem. After reducing the stroke, the rivet gun will complete the effective single work, and the nut will automatically retract.

5. I encountered the situations where the rivet gets stuck or the mandrel only breaks after multi-riveting. How can I solve these problems?

If the rivet gets stuck, you need to adjust the stroke. If the mandrel cannot retract after breakage, it's because the stroke is too short. You need to move the stroke adjusting nut forward to lengthen the stroke. If the mandrel only breaks after multi-riveting, it's because the stroke is too long. You need to move the stroke nut backward to shorten the stroke.

6. When I encounter special working conditions, such as riveting operations in confined spaces, and the conventional Nail Rivet Gun cannot be used, how can I effectively solve this problem?

WYMA provides specialized extended turning anvils and extended anvils. When used together with the standard Nail Rivet Gun, they can solve the problem of being unable to perform riveting operations in confined spaces. However, they currently only fit the following models, so please note when making a purchase: WM-8221/WM-8221V/WM-8222/WM-8222V.

7. I want to rivet the extra-long rivet nuts, can I use WYMA's Air Rivet Nut Gun to do this?

Certainly! Let us take an example. When riveting a standard length rivet nut, the nut compresses very tightly. But if we want to rivet an extra-long rivet nut twice the length of a standard one, you will notice a wide gap remains in the middle and it cannot compress very tightly. The reason lies in the limited riveting stroke of the rivet nut gun, which means for rivet nuts longer than the rivet nut gun’s stroke, during single stroke riveting work, it cannot compress the extra-long nut into the effective riveting range. Given this, when riveting extended rivet nuts to ensure the nut is riveted tightly enough, the correct approach is to rivet two or even more times.

8. How many sizes of rivet gun guide nozzles are there?

The Air Nail Riveter is compatible with guide nozzles in sizes 2.4/3.0/3.2/4.0/4.8/5.0/6.4 (mm), as shown in the image below.

9. If I want to rivet hard materials rivets such as stainless steel rivets, are there any recommended models?

We highly recommend the WM-8224V, WM-8225, WM-8226, WM-8227, and WM-8228V models. These models provide stronger pulling force, which make them easier to handle rivets made of various hard materials. Besides rivets of regular materials, they can also rivet SS Hemlok Blind Rivets.

10. What are the main parameters of the air riveter? What do they reflect and represent?

The parameters differ between the two series.

The Pneumatic Nail Riveter series focuses on Pull Force, Stroke and Rivet Capacity. Pull Force is the core specification for any Air Nail Riveter, it represents the max pulling force that this riveting tool can generate, usually measured in Newtons(N). This specific value dictates the diameter and material of rivets that you can install with the device. When you work with harder materials like stainless steel or larger diameter rivets, you must use higher force to break the mandrel successfully. If the tool lacks sufficient force, it fails to break the mandrel and results in a failed installation. Stroke refers to the max distance the jaws of an Air Nail Rivet Gun can move backward during single-riveting work, which technicians measure in millimeters (mm). This metric influences work efficiency and compatible rivet lengths. A sufficient stroke ensures the tool breaks the mandrel of a standard rivet in one go. When the stroke proves too short for longer rivets, the operator must pull the trigger twice or more to complete an effective riveting, which slows down work efficiency. Rivet Capacity specifies the exact size range the tool handles. Manufacturers measure this by the rivet head diameter, such as 3.2mm, 4.0mm, or 4.8mm. This parameter gives users the most direct reference to match the tool with their daily operational needs.

In contrast, the Pneumatic Rivnut Gun series relies on just two main parameters: Rivet Range and Stroke. Rivet Range defines the spectrum of rivet nuts the tool installs, expressed through metric internal thread sizes like M3, M4, or M5. This stands as the primary factor when selecting a nut gun because it dictates the size of the internal threaded hole you create in the workpiece. Different nut sizes require that you swap the corresponding mandrels and nosepieces. Like the nail riveter, Stroke here refers to the distance the mandrel retracts during a single riveting work cycle. However, precise stroke control matters even more for nut guns as it governs the deformation amount and the final quality of the joint. Setting the stroke too short results in insufficient deformation and a loose fit, setting it too long damages the thread or breaks the nut entirely. Consequently, high-end rivet nut guns usually come with adjustable stroke settings to accommodate plates of different thicknesses and different types of rivet nuts.

11. How does WYMA guarantee product quality? Are all products in stock? Are there sufficient replacement parts? If I have customization needs, what options are available?

All our Air Riveters pass the EU MD-CE certification, offering safety, reliability and long-term durability. The models displayed on our website are all in stock. We provide ample accessories including guide nozzles(2.4/3.2/4.0/4.8/5.0/6.4 mm), matching wrenches, CNC quenched thickened alloy jaw heads, multi-standard air inlet connectors(NPT, GB, BSP), special hydraulic oil and pneumatic tool lubricating oil. We also support color customization and logo customization and you are welcome to discuss order and specific customization details with our pro service team.

12. How can I get the best quote from WYMA quickly?

You can click "Send Inquiry" on the top of the product introduction page of our website to jump to the inquiry content form to send us an inquiry. Our staff will reply to you as soon as possible to communicate the details and tell you how to place an order. Alternatively, you can contact us through the following contact information.

For 24 hours contact details as below:

Email:

sales01@wymatools.com / sales03@wymatools.com

Tel / WhatsApp / Wechat:

+86-133 6036 8438 / +86-136 2252 8472