How To Oil An Impact Wrench

by Joost Nusselder | Updated on:  March 12, 2022
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Having an impact wrench can save a lot of time and energy in any of your mechanical work. Most of the impact wrench is powered by electricity or air. When you buy an electric impact wrench, there will be no moving parts as the motor is sealed inside. But an air impact wrench has moving parts that need oiling to lessen friction and smooth rotation. If you find your air impact wrench not performing as well as before, you must think of lubricating the moving parts in the impact wrench.
In this article, we will articulate the whole process of how to oil impact wrench so that you can ensure durability and smooth performance of your tool.

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Parts Of The Impact Wrench That Need To Be Lubricated

Before we tell you the step by step process of lubricating your impact wrench, you must know which parts of the wrench you need to oil. In an air impact wrench, there are only two moving components that need to be lubricated. Those two moving parts are: Now, most of you know what a motor is. It basically converts air energy to mechanical force in linear or rotatory motion. In an air impact wrench, it gives power to the impact mechanism or the rotating hammer so that it can rotate the anvil for tightening or loosening the bolts.

Types Of Oil You Need For Lubricating The Impact Wrench

Both the motor and rotating hammer mechanism work independently and require separate lubrication. For oiling the motor, you must put any airline lubricator or air tool oil. To apply the oil, you must have an air tool that you will find in any impact gun manufacturer. However, to lubricate the impact mechanism, motor oil is definitely an ideal option.

How To Oil Impact Wrench- The Process

Dismount The Impact Wrench

Before you oil your impact wrench, it’s highly important for you to clean the wrench first. Because an impact wrench comes lubricated when you buy it. And after using it for some time, dust and other metal particles will get stuck with the moving parts that need to be cleaned up. If you apply oil without cleaning up the accumulated dust, you won’t see any results of oiling the gun. Therefore you must disassemble the impact wrench. The process you must follow is:

Clean the Disassembled Components

After separating all the parts, now it’s time for cleaning. With a brush dipped in spirit, rub off all the metal rust and dust from each component and especially from the moving parts. Don’t forget about cleaning the motor vane.

Assemble all the Components

When cleaning is done, you must assemble all the components together back in place. For assembling, you must be very careful about the position of each part and the chronology. That’s why be very careful while detaching the components so that you can maintain the order when you will require to assemble it again.

Lubricating the Wrench

Oiling the impact wrench is the easiest part of the whole process. As we have said there are two parts that require lubrication. You will find an oil inlet port on the side of the wrench to start off. That’s All! You are done with oiling your impact wrench for smooth and precise operation.

Things You Must Remember

Basically, there are two types of impact mechanisms; the oil impact mechanism and the grease impact mechanism. Read the manual of your impact wrench that was provided by the manufacturer to find out which impact mechanism your impact wrench has. If it is a grease impact mechanism supported wrench, squirt grease only into the contact point of hammer and anvil. Don’t put the grease all over the machine. If it’s an oil system-supported tool, you are good to go with our suggested lubrication process. You must lubricate the impact wrench after a definite time period. Otherwise, there is a higher possibility of getting damaged by clogged dust and metal rust. For the grease impact mechanism, you are recommended to do regular replenishing. Because, due to the friction, the grease vapor real quick. Therefore, it requires frequent lubrication.

Frequently Asked Questions (FAQs)

When should I oil my impact wrench?

There is no such definite time period for lubrication. It basically depends on the frequency of using the tool. The more you use it, the more oiling is necessary for smooth operation.

Why is the lubrication of the impact wrench necessary?

Basically, lubrication is needed for lessening the friction at the contact point of the hammer and anvil to ensure the motor’s and machine’s durability.

Bottom Line

To get a perfect and balanced output all the time from the impact wrench, lubrication is a must. It also prolongs the durability and effectiveness of the tool. Therefore, whether you are a professional or a hobbyist who uses an impact wrench for different purposes, you need to maintain a lubrication calendar. Thus they can ensure perfect timing for oiling the wrench and enjoy the ultimate performance from the tool. Hope all the processes articulated in the article on oiling your impact wrench will be enough for you to start the lubrication.
Joost Nusselder, the founder of Tools Doctor is a content marketer, dad and loves trying out new equipment, and together with his team he's been creating in-depth blog articles since 2016 to help loyal readers with tools & crafting tips.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on at the time of purchase will apply to the purchase of this product.