TAC Digital Torque and Angle Wrench

Why Compromise?

Get Our Digital Torque and Angle Click Wrench!

The operators love the click wrench because it is simple and easy to use. 

Engineers love the speed of a click-wrench so they can meet their production goals. 

Managers want the torque value data from a digital wrench. But a digital wrench can be slower. 

How do you keep EVERYONE happy? You've found the page with the answer. The TAC wrench is fast and easy to use because it is a click wrench. More than just OK/NOK, it provides the final torque and angle values like a digital wrench because it is a digital wrench. 

No reason to compromise. Everyone gets what they want with the TAC wrench. And your CFO will be pleased with the ROI. 

If you have indexing lines in your assembly, you'll want to consider the TAC wrench paired with the TCV e2 

From the moment you lay your eyes on this tool, you realize it is different. The gorgeous powder-coated blue body stands out. It is easy to spot in a group of torque wrenches. 

The black radio case features a grey label signifying that is this a torque and angle wrench. It also has two LEDs on the case, closest to the handle. One LED is for the traditional OK/NOK indication, and it flashes Green/Red. The other LED is blue. 

When the parameter with which the tool is paired becomes active, the second LED flashes blue. When the batch is complete, the second LED turns solid blue, indicating that the batch is complete. 

What makes the TAC digital torque and angle wrench so different?  

The TAC (digital torque and angle wrench) is really two wrenches in one. First, and foremost, it is a traditional mechanical click-wrench. When the preset torque value is achieved, the internal mechanism moves, striking the side of the flattened case. That creates a distinctive sound. The operator stops pulling when the wrench clicked, the LED flashes green, and the display on the Global 400 advances the batch count and flashes green. 

Although the wrench reports like a digital wrench, it is calibrated and set like a traditional preset click wrench. It does not change torque output based on a digital input. The torque value is changed by compressing or relieving the spring, just like a preset click wrench. After all, it is a click-wrench. 

Note that there are two torque values shown on the Global 400 display. There is the "click" torque value, the point at which the wrench clicked. There is also the peak value. This is the point at which the operator stopped pulling. The display to the right also shows that the appropriate torque value was achieved 22 degrees of rotation after snug torque was achieved. 

But what if the operator continued to pull? What then? The image below shows exactly what happened. 

In this case, the wrench clicked at 9.8 Newton Meters. But the operator continued to pull until the final torque was 17.3 Newton Meters. Both the TAC and the controller display flashed red, indicating NOK. 

The operator can now self-diagnose and determine exactly what he or she did to illicit the NOK. This is both error-proofing by guidance and error-proofing by behavior modification. 

The TAC is powered by a single AAA, NiMH battery. Extensive testing shows that the rechargeable NiMH batteries from Powerex, provide the longest battery life between changes. They are also the most environmentally friendly battery choice. NiMH batteries provide the most consistent power curve.

After recharge, there is a slight drop in the power curve. After that, the power curve is very stable until the very end. At that point, the power curve drops dramatically and it is time to change the battery. There is a battery condition display on the display of the Global 400 and Global 400mp torque controllers. 

To learn more about how the TAC digital torque and angle wrench. along with the Sturtevant Richmont torque controllers can help your torque-related assembly quality, contact your local Sturtevant Richmont sales professional. 

Need model and capacity information to order? See below.

Notes:

PN 10711 - SR CONNECT.  This is a software package and wireless radio dongle interface (PN 10710) that is sold separately and is only required to communicate with the tool during wrench calibration. 

The TAC wrench must be calibrated for both torque and angle and we recommend only utilizing an ISO 17025 Accredited calibration laboratory for calibrating these tools. 

Important Battery Information:

Your TAC wrench ships with two AAA NiMH rechargeable 1,000 mAh rated batteries. Keep one battery in the charger while the other is in the tool. 

We sell "Smart Chargers" which extend battery life because they stop charging the battery when the battery has reached capacity. Our Smart Chargers will charge one battery at a time if needed. Not all chargers will do that. They will appear to charge the battery but it does not reach full capacity. If you are using chargers other than the ones we sell, please check this detail. 

PN 10740 - Four Slot Battery Charger - sold separately

PN 10741 - Eight Slot Battery Charger - sold separately

An Important Note About Batteries

Your TAC wrench ships with two NiMH AAA rechargeable NiMH batteries. The batteries we include with the TAC wrench are high-quality batteries with a 1,000 mAh rating. It is vital that you use only AAA NiMH batteries rechargeable with a minimum rating of 1,000 mAh or higher. 

The TAC is built around sophisticated electronics that need a very steady power stream. That voltage is best supplied by a NiMH battery. NiMH rechargeable batteries provide 1.2 volts. The fully charged battery has an immediate drop in current that remains steady until the point at which the battery power is exhausted. Then the power drops to zero. 

Alkaline batteries provide 1.5 volts of power. The AAA-sized lithium-Ion batteries can provide multiple voltage levels. Some AAA lithium-ion batteries can provide up to 3.7 volts. At best you can hope for inaccurate readings. But chances are good the higher voltage from a Lithium-Ion battery could damage the electronics and immediately void your warranty. 

Good operational procedures call for using our NiMH AAA rechargeable batteries. Having tested multiple brands, we have found that Powerex NiMH batteries are a good match for our electronic requirements. The PowerEx batteries outperformed other batteries that were more than twice the price of the AAA PowerEx batteries.

Please be sure to use the recommended NiMH batteries. 

TAC Features

• You get the speed and agility of a click-wrench because it is a click-wrench.
• Audible/tactile pulse when preset torque is achieved.
• You can keep up with the shortest of takt times. 
• You get the accuracy and reporting capabilities of a digital wrench because it is a digital wrench. 
• Fully compatible with the Global 400, Global 400mp, and the TCV e2 torque controllers. 
• Works with the Patented Holding Tool when used with the Global 400 or Global 400mp. 
• Access to over 200 interchangeable heads that all fit on the end of the Pin and Spring Dovetail.
• Heads "Lock On" to the Dovetail when the head is centered on the wrench.
• Powered by one AAA NiMH rechargeable battery.
• Using any battery other than a AAA NiMH immediately voids the warranty. 
• Good battery life. Use a recharged battery at the beginning of a shift. 
• Ships with two NiMH rechargeable batteries. The charger is sold separately.
• Accuracy of +/- 4% of the indicated value between 20% and 100% of the rated torque capacity.
• Is equipped with two LEDs. One LED is the traditional Green/Red for OK/NOK. The other LED is a blue LED that pulses when the tool becomes active and is ready for use. LED holds solid blue upon batch completion. 
• Pulsing blue LED timing can be adjusted in the controller to help operators identify the active tool if there are multiple TAC wrenches in a work cell. 
• Requires a special tool to set torque value. This prevents inadvertent changes to the torque output.  
• Comes with ISO 17025 Calibration Certificate if we set the torque value at the factory. 
• Our calibration lab is accredited in both torque and angle. 
• Torque modes of operation include Click and Peak. Click reads the torque value at which the wrench clicked. Peak reads the highest applied torque value. 
• Operates in Torque and Angle Monitoring (TAM). Modes of operation are set in the controller and can be changed on a parameter-by-parameter basis. 
• Torque value must be changed by adjusting spring tension. 

SR CONNECT

If you are calibrating the TAC wrench, you will need the software and wireless radio interface to calibrate the tool. This package is sold separately. To get the calibration kit, order part number 10711. In addition to SR CONNECT, you'll need spacers that are placed inside the wrench when it is disassembled during the calibration process. We recommend that calibration technicians be trained at our factory prior to attempting to calibrate the TAC wrench. 

SR CONNECT is the wireless radio interface that allows the software to talk with the tool. Prior to calibration, the wrench must be released from the controller. Since there is no physical access port on the tool, the calibration table must be loaded into the tool via the wireless radio interface. The SR CONNECT wireless interface facilitates that. 

We are producing videos on how to use the SR CONNECT wireless interface. They will be posted on a separate page on our website. 

Use of Extension Handle With the TAC Wrench

If you need extra length, you can use the 853601 Extension Handle. Like our other tools, the use of the extension handle requires recalibration. For the TAC wrench, recalibration with the Extension Handle in place should be done at the factory. 

Interchangeable Heads

By building the TAC digital torque and angle preset click wrench with our traditional pin & spring dovetail, you can use well over 200 interchangeable heads that maintain a common centerline. You can learn about the common centerline and our selection of well over 200 interchangeable heads for torque wrenches by visiting our web pages.

The TAC digital torque and angle click wrench is designed with the Sturtevant Richmont flattened case.

When we invented the preset click wrench back in 1945, we designed it with a flattened case. Why hasn't that changed after all these years? The answer is simple. The flattened base makes the wrench more durable and much harder to sideload.

Let's look at durability. Why does the flattened case make the Sturtevant Richmont torque wrenches more durable? In the photo to the left, you see the click mechanism supported by steel ball bearings. Those ball bearings guide the mechanism and reduce wear. That makes the wrench last significantly longer than those tools make with a tube case. 

A tube case places more stress on all the components of the internal workings of the torque wrench. Those stressors can cause more rapid wear as well as impact repeatability. Repeatability is impacted by other factors as well. 

The prescribed angle of a wrench to a fastener for the most accurate torque application is 90 degrees. Sideloading is bending a wrench away from the 90-degree mandate. That delivers inaccurate torque application. Sideloading the wrench by differing degrees ruins repeatability. The whole reason for using a torque wrench is to create accurate and repeatable torque application results. Sideloading the wrench defeats the purpose of using a torque wrench. 

Some companies put a "flex head" on their torque wrenches. That makes sideloading the wrench easier, not harder. Torque must be applied at 90 degrees to the fastener. Deviations from the 90-degree plane change torque output. That adds a variable. The more you vary from 90 degrees, the bigger the impact on torque application. That is one of the reasons why Sturtevant Richmont will NEVER build a torque wrench with a "flex head". Torque wrenches were designed to eliminate variables, not introduce them. 

Want more information? Ready to buy? Contact your local Sturtevant Richmont torque wrench sales professional. 

TAC digital torque and angle wrenches are made in Carol Stream, Illinois by highly experienced and capable hands.