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Checking Your Bolt Torque

Knowing how to check bolt torque is a key ingredient in making sure fasteners don’t fail. There are several ways to determine bolt torque, including torque auditing.

Bolt Torque

As Bill Eccles of Bolt Science writes, there are three ways this can be achieved:

  1. The on-torque method – This is the most commonly used form of torque auditing, measuring the torque required to turn the bolt/nut by a small angle (usually two to 10 degrees) in the tightening direction.

  2. The off-torque method – This method involves measuring the torque needed to rotate the bolt/nut in the untightening direction (this is usually less than the tightening torque).

  3. The marked fastener method – This requires you to mark the position of the bolt and nut relative to the joint, loosening it by an angle of approximately 30 degrees, then measuring the torque needed to get the bolt back to the marked position.

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[CASE STUDY] Manufacturing Maintenance and On-Site Calibration

Maxpro has clients from a wide range of industries, from pipeline crews to wind turbine makers to mining operations. Among those clients are manufacturers who work with the U.S. military.

One of them, a firm in northern New Jersey, is a subcontractor for armored personal vehicles. This manufacturer needed to have its torque wrenches calibrated according to ISO 17025 certifications. And as we’ve pointed out in the past, it’s often impractical for companies to ship their tools to our plant for calibration, either due to cost, downtime, or both. Fortunately, our mobile calibration team could head to New Jersey to get the job done.

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Industrial Construction Trends for 2017

Maxpro has spent more than 20 years selling, renting, repairing and calibrating torque wrenches for industrial construction, which means we’ve needed to be up to date on where the industry is headed from year to year.



And we know our readers will want to make sure they’re up to date as well, which is why we’ve put together this list of industrial construction industry trends for 2017. Here are 5 things to watch out for this year:

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[CASE STUDY] Pipelines and Torque Tools

Pipeline workers need to know they have tools that are dependable and accurate.
An error in their work could mean a disruption in the energy supply, or worse, some sort of environmental disaster.

The rise of the natural gas drilling industry in Pennsylvania has provided Maxpro with the opportunity to work on various pipeline projects. Maxpro President Tom Macey says these projects typically require pneumatic torque wrenches, because there are a lot of bolting & critical torque requirements involved.

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