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What Is An Air Impact Wrench, Its Uses & Types?


An air impact wrench is a pneumatic tool that harnesses the power of compressed air to generate a series of rapid, high-torque rotational impacts. We take pride in manufacturing a wide range of high-quality air impact wrenches that cater to various industries.

How Does an Air Impact Wrench Work?

At the heart of an air impact wrench lies a robust motor powered by compressed air. This motor drives a rotating mass, commonly known as a hammer or anvil, which is connected to the wrench's output shaft. As the hammer rotates, it repeatedly strikes a set of dog clutches or pins, creating a series of rapid impacts that translate into rotational force.

The key advantage of an air impact wrench lies in its ability to generate substantially more torque than a standard wrench or ratchet. This torque is achieved through the rapid, hammering action of the internal components, which effectively "impacts" or hammers the fastener loose or tight.

Uses of Air Impact Wrenches

Automotive Repair

In the automotive industry, air impact wrenches are indispensable tools for mechanics and technicians. They are commonly used for tasks such as removing and installing lug nuts on wheels, dismantling and reassembling engine components, and loosening or tightening stubborn bolts and fasteners.

Construction and Heavy Equipment

Construction sites and heavy equipment maintenance facilities rely heavily on air impact wrenches. These tools are essential for assembling and disassembling large machinery, vehicles, and structures, where high torque is required to loosen or tighten heavy-duty fasteners.

Manufacturing and Assembly Lines

In manufacturing plants and assembly lines, air impact wrenches are used for tasks such as assembling and disassembling machinery, equipment, and components. Their high torque output and speed make them ideal for production environments where efficiency and productivity are paramount.

Maintenance and Repair

Air impact wrenches are useful tools for maintenance and repair professionals across various industries, including HVAC, plumbing, and industrial machinery repair. They are used to loosen and tighten fasteners in confined spaces, on large equipment, or in situations where manual tools are simply not powerful enough.

Types of Air Impact Wrenches

Pistol Grip Air Impact Wrenches

Pistol grip air impact wrenches are among the most popular and widely used types. They feature a ergonomic, pistol-like handle that provides a comfortable and secure grip, allowing for better control and maneuverability. These wrenches are available in various sizes and torque ratings, making them suitable for a wide range of applications.

Inline Air Impact Wrenches

Inline air impact wrenches, also known as straight wrenches, are designed for working in tight spaces and confined areas. Their compact and slender design allows them to access hard-to-reach fasteners, making them ideal for automotive repair, machinery maintenance, and other applications where space is limited.

Angle Air Impact Wrenches

Angle air impact wrenches feature a head that is angled relative to the handle, allowing for better access to fasteners in awkward or hard-to-reach locations. These wrenches are commonly used in automotive repair, construction, and maintenance applications where maneuverability and access are crucial.

Heavy-Duty Air Impact Wrenches

For heavy-duty applications that require tremendous torque output, we offer a range of heavy-duty air impact wrenches. These robust and powerful tools are designed to handle the toughest fasteners encountered in industries such as mining, construction, and heavy equipment maintenance.

Compact Air Impact Wrenches

Compact air impact wrenches are lightweight and compact, making them easy to maneuver and operate in tight spaces. Despite their small size, these wrenches pack a powerful punch, delivering high torque output for their size. They are ideal for automotive repair, maintenance, and light industrial applications.


For most automotive and mechanical jobs, you just can't go wrong having a good RONGPENG R901 1/2 inch impact wrench in your toolbox.

The twin hammer impact mechanism generates up to 1000 ft-lbs of bolt-busting torque while weighing only 4.4 lbs. One hand forward/reverse switch with three position speed control. Equipped with advance process, it ensures longer service life for use and there is no special need of maintaining.

For vehicle repair, construction sites and Industrial factory with sockets. R901 is deal for any automotive application, whether removing wheel nuts or performing maintenance on suspension components, motor or gear boxes.


Model No:R901

Square Drive:1/2"

Capacity Bolt Size:5/8”(16mm)

Free Speed: 7000Rpm

Working Torque:1000Ft-Lb(1356 N.m)

Air Inlet :1/4"

Air Hose(Id):3/8"

Avg.Air Consumption: 6.5cfm,183.9 l/Min

Sug.air Comp: 3HP

Net Weight: 4.4Lbs(2.0kg)

Overall Length: 185mm

Recommended Air Pressure: 90PSI (6.3bar)

RONGPENG has quickly risen to become an unrivaled global producer of air-powered devices including air tools, air spray gun, air nailer, airless paint sprayer, and etc.

RONGPENG seeks independent sales agent to represent and market our industry-leading pneumatic tools. We support OEM, ODM, OBM customization, small order quantity is acceptable and samples are available.

Make any cooperation possible. Any services related to the product, inquire with us now! Rongpeng@Rongpeng.Com