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Ingersoll-Rand 231C 1/2-Inch Super-Duty Air Impact Wrench

4.6 out of 5 stars 453 customer reviews
| 47 answered questions

Price: $119.99 & FREE Shipping. Details
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  • Metal / Plastic
  • Imported
  • Exclusive impact mechanism
  • Pressure-feed lubrication
  • Adjustable power regulator
  • Easy to service two-piece construction
  • Contoured handle for comfort and control
73 new from $101.00 2 used from $111.59
$119.99 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Ingersoll-Rand 231C 1/2-Inch Super-Duty Air Impact Wrench
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  • TEKTON 4957 Impact Adapter and Reducer Set, Cr-V, 4-Piece
Total price: $141.18
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This item: Ingersoll-Rand 231C 1/2-Inch Super-Duty Air Impact Wrench
Customer Rating 4 out of 5 stars (453) 5 out of 5 stars (471) 4 out of 5 stars (42) 4 out of 5 stars (34)
Price $119.99 $120.00 $50.95 $124.99
Shipping FREE Shipping $7.04 FREE Shipping FREE Shipping
Sold By Amazon.com 3rsupply ACDelco Tools Amazon.com
Dimensions 8.8 inches x 3.4 inches x 8.2 inches 7 inches x 7.5 inches x 2.8 inches 8 inches x 2.5 inches x 7 inches 8.1 inches x 8.5 inches x 3.2 inches
Item Package Weight 6.46 pounds 5.1 pounds 6.25 pounds 6.25 pounds
Power Source air-powered air-powered air-powered air-powered
Voltage 0 Volts 0 Volts 0 Volts Information not provided
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Product Description

Product Description

Pressure-Feed lubrication System automatically greases the impact mechanism. Exclusive TwinHammer Plus impact mechanism. Pressure-feed lubrication. Adjustable power regulator. Easy to service two-piece construction. Contoured handle for comfort and control.

Amazon.com

Introduced over 25 years ago and continually refined for optimum performance, the Ingersoll Rand 231C 1/2-Inch Super-Duty Air Impact Wrench offers the sheer power you need to easily tackle even the toughest jobs. Its economy and proven durability make this wrench an industry leader and an ideal choice for heavy-duty jobs.

The Ingersoll Rand
231C Air Impact Wrench
at a Glance:
  • Delivers maximum torque of 425 ft./lbs
  • Adjustable power regulator for variable power in one direction, full power in the other
  • Equipped with an exclusive Twin Hammer Plus impact mechanism
  • Compact, lightweight design for all-day use
  • Ready to go right out of the box; arrives fully lubricated

The easy-grip handle and adjustable power regulator provide both comfort and control.
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Strong torque capability within a lightweight frame helps you tackle your work with ease.
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Twin Hammer Plus and 425 ft./lbs. of Torque Deliver Efficient Performance
Whether you're a vehicle hobbyist or professional mechanic, the 231C can help simplify jobs like rotating tires or performing basic vehicle maintenance. It comes equipped with an exclusive Twin Hammer Plus impact mechanism for 1/2-inch drive, and it boasts an average air consumption of 4.2 CFM. And whether you're removing lug nuts or stubborn bolts, pressure-feed lubrication ensures ease of use.

This compact tool delivers a maximum torque of 425 ft./lbs. and provides an impressive speed of 8,000 RPM (1,200 BPM) for fast, efficient performance.

Adjustable Power Regulator for Optimum Results
To help maintain consistent results, the 231C's adjustable power regulator provides variable power in one direction and full power in the opposite direction, which gives you the freedom to set the power independently.

Compact and Lightweight for All-Day Use
Measuring only 7.2 inches in length and weighing just 5.3 pounds, the 231C is compact and lightweight enough to minimize stress on your wrists and hands. It's also easy to take with you as you move around the shop or jobsite.

Caring for the 231C is as simple as can be thanks to the easy-to-service, two-piece construction and the contoured handle that ensures comfort and control, even during all-day jobs.

For added convenience, the 231C arrives fully lubricated and ready to go right out of the box.

Ingersoll Rand: Getting Things Done
Part of the larger Ingersoll Rand Corporation, a $13 billion global company with a 100-year tradition of technological innovation, Ingersoll Rand provides affordable products, services, and solutions that enhance energy efficiency, productivity, and operations. Its diverse and innovative products range from complete compressed air systems, tools, and pumps to material and fluid handling systems to microturbines.

What's in the Box
231C Impact Wrench and instruction manual.


Product Information

Technical Details

Part Number 231C
Item Weight 6.5 pounds
Product Dimensions 3.4 x 8.2 x 8.8 inches
Item model number 231C
Size 3.4 x 8.2 x 8.8 inches
Color Silver/ Black
Power Source air-powered
Item Package Quantity 1
Measurement System Inch
Batteries Included? No
Batteries Required? No
Warranty Description 1 year from date of purchase with sales receipt or invoice
National Stock Number 5130-01-594-8486

Technical Specification

Warranty [pdf ]

Additional Information

ASIN B0002SRM3I
Customer Reviews
4.6 out of 5 stars 453 customer reviews

4.6 out of 5 stars
Best Sellers Rank #4,275 in Home Improvements (See top 100)
#4 in Home Improvement > Power & Hand Tools > Power Tools > Impact Wrenches
Shipping Weight 6.5 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available October 2, 2001

Warranty & Support

Warranty, Parts:Parts
Product Warranty: For warranty information about this product, please click here [PDF ]

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By C. Montoya on February 3, 2006
That's right. Our shop uses these 231's for regular duty and tire service. These things last for years despite being dropped on the floor, not oiled regularly, and zero maintenance. Typically the power selector knobs are the first thing to go on these wrenches. If you need good performance and a tool that will last a long time then this is your wrench.
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I'm a professional diesel mechanic, and I will not buy any other impact but this one. My first one lasted me for 10 years, through drops, kicks, no oiling, etc. I only don't have it anymore because I moved and sold it to a friend who still uses it. I have put this thing head to head with impacts 3 times the price of this one, and it has always been the strongest and most powerful. Most of the people in my last shop borrowed mine because it was the most powerful in the shop, and nearly everyone at my new shop has one. Buy it, you won't be disappointed.
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Verified Purchase
The first thing I do with any new tool is to grasp a full understanding of maintenance and care before using. The many professionals who rave about the 231C are right about quality, durability and price. Here are a few things I discovered that are not mentioned. The Product Information manual is a runt. Inside the front cover is a small diagram, less than 2 inches square, showing the tool and all lubrication points using tiny icons which I found to be somewhat confusing. So I contacted IR customer service for clarification. What a surprisingly courteous and helpful reply I received. They were great and answered every question I had. I've used impact wrenches all of my life. The 231C is a prize and I wanted to treat it right. Here's what I learned. Complete lubrication of the 231C is done at the factory. Since the owner's manual also covers the 231H and the 244A, the one diagram shows the lube points for all models. There is only one grease port on the back of the 231C. Add grease after 40 hours of use. If you do not have an in-line lubricator on your pressure hose, add 3 drops of oil/air tool lubricant to the air intake port every 6 to 8 hours or daily. That's all. IR offers an Impact Wrench Care Kit and it is sold by Amazon.Com. It includes the grease gun,heavy duty impact wrench grease (105-4T) and air tool lubricant (10Z4) . If you want the best, deserve the best, buy the best.
1 Comment 58 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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****Update 1/2/2013****
I have used this impact gun a great deal since my last review, and this gun is still holding strong. I recommend you purchase the IR air tool oil. I did buy the protective boot for my gun, its red and takes regular abuse (gun occassionally gets tossed to the side un-intentionally while I'm working) and my impact gun is still looking great!

I use this gun for A LOT of different things, most recently: Busting off the bed nuts on my GMC project truck (nuts were rusted), leaf spring removal, front suspension A-Arms, Honda suspension rebuild: McPherson strut removal, sway bar, hub-bearing removal and install (this was so sweet, i bought the bearing kit on Amazon as well), I can go on and on. You wont be disappointed with this gun, for the price and performance, you cannot beat it.

Note: I grew up fixing cars with my dad, so a word of advice from someone who has been doing this a while: Don't skimp and use your regular sockets with ANY impact gun. Spend the money on real impact sockets and use impact grade U-joints and extensions. Regular sockets WILL crack because of their thin-wall design and are simply not up to the task of taking abuse from an impact gun. You cannot put a price on your safety, and ER visits because a shard of shattered socket flew in there should not be in your plans.

I still stick with my opinion that if you choose an impact gun, make sure it is serviceable (can be opened up and you can purchase a rebuild kit for it) this alone will ensure your gun will be around for years and years to come. A lot of the other guns i shopped for were of a sealed/riveted design, and wont allow servicing should you need it.

****I highly recommend this gun to others.
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Does exactly what it's supposed to do and does it well.
High torque, fast, easy on and off with sockets/extensions, and quality construction. It even *sounds* good when you use it, LOL! Considering the price and quality/performance, this is a terrific value.
It IS loud though; be smart and use some kind of noise suppression while using this fine tool.

(10 years ago I bought a Goodwrench brand air impact wrench and can't believe I put up with its terrible performance for all these years. Its inability to remove tight nuts caused me untold hours of lost time (even days) and agony. I never looked for a better quality impact wrench b/c I thought it would cost me several hundreds of dollars, which I could not justify. Finally one day recently, faced with an axel nut that would not come off, I got on the computer and started researching, never suspecting that I could buy an Ingersol Rand impact wrench for a very reasonable price. Ordered it from Amazon, and a few days later hooked it up to the same air compressor, same long length of hose, same pressure as the Goodwrench, and the same axel nut: BLAP! and it was off, no sweat. Laughably easy. This tool is a joy to use, and the feeling of having bought a great tool for a very good price gave me that rare good feeling of SATISFACTION!)
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