Alltrade 940759 Powerbuilt Digital Torque Adaptor for 1/2-Inch Driver

by Alltrade

Product Description

Amazon.com Product Description

The Alltrade Powerbuilt Digital Torque Adaptor for 1/2-Inch Driver takes the guess work out of applying proper torque to a nut or bolt, without the need for an expensive torque wrench. This versatile tool lets you instantly, safely convert a half-inch drive ratchet into a digital torque wrench. The torque adapter also lets you accurately calibrate any analog or digital torque wrench--right in your own garage.

Digital Torque Adapter for 1/2-Inch Driver At a Glance: Converts any ratchet into a torque wrench Calibrates your digital and analog torque wrenches Records both peak and trace torque Five torque measurement settings Memory slots record last 50 torque value readings

Instantly converts a 1/2-inch drive ratchet to a digital torque wrench. View larger.

A convenient hard-shell storage case is included. View larger.

Turn a Standard Ratchet into a Torque Wrench

Five torque settings

To turn a standard ratchet into a torque wrench, simply power up the Digital Torque Adapter and select your desired unit of measurement--foot pounds, inch pounds, Newton meters, kilogram centimeters, or kilogram meters. Next, enter your desired torque. The number will flash for 10 seconds before displaying zero, signaling you're ready to go. Select and insert a ratchet into the square drive opening on the top of the unit. Then select and attach your desired socket into the square drive fitting on the bottom of the adapter. That's it. Your ratchet is ready for use as a torque wrench.

Calibrate Any Torque Wrench
With the Digital Torque Adapter, you can calibrate your digital or analog torque wrench to increase your tool's precision, accuracy, and safety. To calibrate your wrench, place the Powerbuilt calibration cube in a bench vice and tighten securely. Set your torque wrench for a setting for calibration (for best results, set it about halfway through the range of the wrench). Then insert the assembled wrench and adapter into the calibration cube. Apply slow and continuous pressure to the wrench until you reach your target torque setting. Adjust the wrench as needed until your wrench setting matches the digital display on the Digital Torque Adapter. When the numbers match, your wrench is accurately calibrated.

LED indicator and audial notification

Built-in Safety Features
To prevent over-torque, the Digital Torque Adapter is equipped with built-in safety features. Its LED indicator flashes green, yellow, and red as your desired torque is approached and attained. In addition, an audio alert beeps with progressive frequency and finally turns to a steady tone when your specified torque is reached. With the Powerbuilt Digital Torque Adapter, you can get the precise torque you want without snapping a nut or bolt in the process.

What's in the Box
Digital torque adapter, calibration cube, hard-shell storage case, and lithium cell CR2032 battery.

Product Description

940759 Features: -Digital torque adapter.-Selectable for five torque units of measure: lb-ft, lb-in, kg-cm, kg-m and N-m.-Display modes include Peak, which displays and stores the max torque applied, and Trace, which shows real-time torque as it is applied.-Accuracy: + /- 1pct.-Torque Range: 29-147 lb-ft. Includes: -Battery, storage case and calibration cube included AA. Dimensions: -Dimensions: 4.63'' H x 9.88'' W x 3.13'' D. Warranty: -Lifetime limited warranty.

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Product Details

• Product Dimensions: 3.1 x 9.9 x 4.6 inches
• Shipping Weight: 1.1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B0031QPJZG
• Item model number: 940759
• Average Customer Review: 4.6 out of 5 stars  See all reviews (42 customer reviews)
• Amazon Best Sellers Rank: #1,446 in Home Improvement (See Top 100 in Home Improvement)

Customer Reviews

Most Helpful Customer Reviews

91 of 92 people found the following review helpful:

5.0 out of 5 stars Really accurate, perfect for the shade tree mechanic, February 13, 2011

By 

C. Moy (Parker, Colorado) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Alltrade 940759 Powerbuilt Digital Torque Adaptor for 1/2-Inch Driver (Tools & Home Improvement)

I bought this as it came up in the "Other customers looked at" section of the torque adapters that I purchased for getting at bolts that can't be reached with the socket on the torque wrench.

History:
First off a little back ground I am in the military and one of my jobs is to test torque wrench and calibrate them. So I have access to a CDI torque tester, and work with torque wrenches as part of my job.

Reasoning:
I saw this thing and thought eh for 50 dollars how good could it be. Then I read all the reviews and people kept saying how accurate it was since they compared it to a wrench they had at home, some were new others were not. I decided eh why not buy it and see just how accurate it is. If it works then I can have a tester at home and not need to bring in all my wrenches to check from time to time. If it doesn't amazon's return policy for defective items is very good.

First impressions:
When I got the unit it is much smaller than I was expecting. It does have a very nice blow molded case and adapter to put into a vise so it can be used to check your torque wrenches. Instructions are a little vague for example it doesn't tell you the difference between peak and trace settings. Which is one holds the peak torque value the other varies as torque is applied. Obviously you want to use the peak setting for checking the calibrations of the wrench, while using trace if you are using it as the torquing device. Also I didn't see it listed on Amazon's site but the range of the unit is 29.5lb-ft to 147.6lb-ft with an stated accuracy of +/- 2%

Test:
Well I took it to work and checked it on the lab tester and it is very accurate (at least the one I received). For the whole range it was about +/- 0.5 max, off of what the lab tester measured in most cases it was less. This was also true for counter clockwise direction, which is great news for Dodge guys that have left hand fasteners. Really the accuracy is better than the +/- 2% that AllTrade states. Also it is accurate below the 29.5lb-ft, when I tested it the unit started registering at about 3.4lb-ft and it was again with +/-0.2 of the lab tester, this is true of the high end I took the unit to an even 150lb-ft and it was on still. For standard testing though we only test the max of the wrench, 60% of range, and 20% of range. I did this and found that the bottom 20% of the max happens to be the 29.5lb-ft that the unit is rated at. So AllTrade is following standards when making this product.

Catch:
I have only one thing to say about the unit, with it's usable range it really can't correctly calibrate a torque wrench. As I stated above to calibrate a torque wrench you have to check it at three points the Max, 60%, and 20%. Reason is springs are not a linear acting object. As you stretch or compress them the amount of force varies. So I have seen wrenches be good at max but fail in the mid 60% but be ok at the bottom range. All of my wrenches fall out of the range of the unit at some point. If it is my large 1/2 then it goes to 250lb-ft, if it is my smaller 3/8 it goes too low as it's bottom usable is 16lb-ft.

Still:
This though however is no reason to take anything away from this unit. For the home mechanic the ability to check at the mid range of a wrench is more than enough for the job since in the case of automobiles the torque values given are usually over a range. If one was worried they could set the unit for the exact torque then check their wrench for accuracy, but then you might as well just use the unit and torque the bolt. Unless you can't get the unit on with a breaker bar because the location of the bolt is too tight.

Conclusion:
If you do not have a torque wrench simply by this and use it as it will be more than enough for the job. It will save you a ton of money and do 90% of the torque values you would need. If you already have a lot of torque wrenches then buy this to check them. I am very impressed with this unit and it will come in very handy for checking my wrenches at home, and for taking to a friend's garage instead of taking all my wrenches I only need to bring this one item. See the pictures I have uploaded showing the readings on the unit vs the lab tester.

19 of 19 people found the following review helpful:

5.0 out of 5 stars Good as a backup and impressive accuracy, February 10, 2010

By 

Wii Wack - See all my reviews

Amazon Verified Purchase

This review is from: Alltrade 940759 Powerbuilt Digital Torque Adaptor for 1/2-Inch Driver (Tools & Home Improvement)

This won't replace my clicker or beam torque wrenches but if it's all you had or could afford, it'll do ya.

I placed it in a vise to check my click torque wrench at 80 ft-lbs several times and it beeped steady (the click was either bang on or very close) in the range of 80 to 80.4 on the LCD. The lowest range is at 29 to 30 ft-lbs. I don't know if the device loses accuracy if you test at lower than 29 ft-lbs, but what the heck, I gave it a try anyway for fun. Checked my other torque wrenches at even lower ranges but you won't get the beep or light indicator. You just have to coordinate or time the click with the readout. I did this at 8 ft-lbs (several times) and it was bang on. I tried the beam type torque wrench at the lower range too (7 ft-lbs - to minimize the readout bouncing around too much) and the readout matched where the needle was pointing.

The quality seems to be there and it comes in a nice protective case. It comes with an inspection certificate in the box with the date of inspection, serial number of the adapter and handwritten values for the torque and the percentage of error at those values. It is also stamped with the name of the inspector and quality manager.

I'm pleased with the tool!

8 of 8 people found the following review helpful:

5.0 out of 5 stars Digital torque adaptor, February 20, 2010

By 

R. Nakamura (CERRITOS, CA, US) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Alltrade 940759 Powerbuilt Digital Torque Adaptor for 1/2-Inch Driver (Tools & Home Improvement)

I bought the torque adaptor to calibrate my torque wrenches. One wrench (250 ft #) was almost new and my 150 ft # is thirty years old and was calibrated 15 years ago. Both checked out to be within a pound at mid range.