Digital Torque Wrenches

Posted on 29 September 2016

A lot of people who purchase a digital torque wrench believe that they are self-calibrating and that the calibration of the wrench doesn't need to be checked.

Nothing could be further from the truth. 

When you turn on your digital torque wrench, it does a "self-check" (much like a late model motor vehicle when you start it up) to make sure the transducer and internal circuitry are ok, but it doesn't calibrate itself.

Digital Torque Wrench CalibrationDigital Torque Wrench Calibration


So digital torque wrenches need to have their calibration checked just like you would do with any other style of torque wrench (i.e. click type torque wrenches). This is the only way to tell if your digital torque wrench is compliant and to ensure that the torque value shown on the LCD display of the torque wrench is what the torque wrench is actually "pulling".

Digital torque wrenches do go out of calibration and are extremely sensitive to knocks and drops.

Don't be fooled by salesperson tech talk mumbo jumbo and remember that it doesn't matter if it is digital, the wrench still needs to be checked.

 

Cost V's Quality

Posted on 12 May 2016

Some of the most frequently asked questions that I get are:

What is a good Torque wrench?
Is this Torque wrench any good?
What Torque Wrench do you recommend?
How much does a decent Torque Wrench cost?

Torque Wrench Cost vs Quality

A torque wrench is no different to any other product.  There are always cheap brands available and then there are the ones that cost a lot more.  Cheap torque wrenches generally have no spare parts available.  If something goes wrong, the wrench becomes a throw away item, whereas manufacturers of more expensive torque wrenches generally have a vast amount of spare parts available to help keep your torque wrench operating like new, without the need for replacement.

I am a firm believer that "you get what you pay for".  Expensive torque wrenches have far more superior operating mechanisms, ratchet assemblies and are made from top quality materials.  As well as this, extensive research and development and testing will ensure a product that will meet all expectations.

A torque wrench is used for critical torque applications - "rough enough is good enough" just doesn't cut it. 

If you are looking for a good quality torque wrench that will give you years of trouble free use, as well as the confidence in knowing that the correct torque of fasteners is being achieved time after time, look no further than the Norbar product range.  Norbar have torque wrenches that will cover every application you require. 

My advice simply is to  take the guess work out of it and invest in confidence.  Upgrade before it is too late.

Torque to Tom for a great price on all Norbar products.

 

Checking Preload

Posted on 18 February 2016

Need to check the starting preload of a gearbox or differential?

TWCS recommends that this critical application is best performed with a digital, dial or beam style wrench that is within calibration standards. Out of calibration torque wrenches can cause numerous problems, including premature bearing failure.  Although these wrenches are generally more expensive, they provide a definitive reading, taking the guess work out of the job and ensuring a high level of repair.

Snap on Digital Torque Wrench Checking Preload Dial Torque Wrench - Checking Preload Beam Style Torque Wrench - Checking Preload
Digital Dial Beam Style

 

 

Dealing with Voltage

Posted on 9 January 2016

In today's society, Occupational Health and Safety is paramount with businesses constantly looking for safer work practices.  If your business deals with voltage, TWCS recommends the use of an insulated torque wrench.  Don't put yourself at risk in any voltage applications, whether it be a 12v battery, the ever-expanding high voltage hybrid vehicle market, electrical switchboard or power generation applications, using a non-insulated wrench can lead to a short circuit resulting in serious injury or even death.  Insulated torque wrenches provide protection and peace of mind when working with up to 1000 Volts.

The photo shows an example of a "near miss".  This wrench was shorted on a battery pack.  It has since been replaced with an insulated type torque wrench, providing staff with a safer work practice.

Torque Wrench Calibration Services

Insulated Torque Wrenches

 

Production Style Torque Wrenches

Posted on 17 November 2015

Has your business ever considered using a Production Style Torque Wrench?

What is a Production Style Torque Wrench? Good question!

A Production Style Torque Wrench is used for applications in a large range of industries from production & assembly to aviation.
Production Style Torque Wrenches come pre-set to a torque value that is required for the particular application.  However, if the torque value requires amendment, the pre-set can be changed; it is not set for life!
Production style Torque Wrenches have no scale or increments as well as a different internal operating mechanism compared to an adjustable type torque wrench.  As such they are considerably cheaper.
By having a production or pre-set type Torque Wrench, it eliminates the possibility of the operator selecting the incorrect scale, i.e. 20Nm instead of 20ft. lbs, and ensures correct tension of fasteners every time. 
These wrenches, like every torque wrench, still require regular calibration testing to ensure that the wrench is operating within the standards (AS 4115 1993, ISO 6789).

Production Style Torque Wrench
So if you think that a production style wrench would suit your industry sector, call Tom @ TWCS to discuss your needs and see which production style wrench would suit your application.

 
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