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Precision Tools For the Mining & Refining Industry

Mining & Refining

Maximizing safety and minimizing down-time are critical in mining and the subsequent mineral refining processes, making Norbar’s primary role in the mining and refining industry, the provision of safe and secure bolting of assemblies, invaluable. Norbar’s involvement does not stop at bolting, however.  Any job requiring the application of continuous high torque, such as valve actuation and valve grinding, can be completed with Norbar’s pneumatic tools.

 

 

Product Selector

Finding the correct torque tool for your specific application is essential to ensure torque is applied accurately and with maximum ease.

Use our Product Selector to find exactly the right Norbar tool for the job.

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Find a Distributor

There are Norbar companies in the UK, North America, Australia, New Zealand, Singapore, China and India, together with a network of specialist distributors in most countries.

Select any region on our world map for contact details.

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Download Catalogue

Details of Norbar’s extensive range of torque wrenches, multipliers and equipment for measurement and calibration can be downloaded in our comprehensive online product catalogue.

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Norbar Videos

Norbar’s collection of training videos.

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Norbar News & Updates

Read about Norbar’s news and developments in the UK and across our international network for the latest updates on the fascinating and fast-moving world of precision torque engineering.

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Download Our Apps

Norbar apps are available free for download on Android and iPhone and are invaluable tools for engineers.

Our Torque Unit Converter provides instant conversion across Metric, SI and Imperial units.

The Torque Extension app calculates the exact torque wrench setting value for required level of torque to be applied.

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FAQ

Precision torque engineering is a wide and complex field which is critical to many sectors of industry and poses many questions to those seeking information about its features and practical applications.

Here are some of the key queries we regularly encounter.

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Use Our Calculators

Norbar has devised easy-to-use online calculators that support the correct application of torque in three key areas:

  1. Unit conversion to assist international measurement definitions.
  2. Torque extension for setting correct values
  3. Torque tension to identify precise levels of torque to be applied for individual applications.

Mobile Fleet

Mobile FleetNorbar plays an invaluable part in getting the off road fleet of equipment going – and keeping it going.  Norbar wrenches are commonly used in the factories of the major equipment manufacturers and then again when the equipment arrives at the site for final assembly.

The most common applications are wheel bolting, track bolting and dozer wear plate bolting. All of these can be completed with ease and accuracy using Norbar’s PneuTorque® pneumatic torque wrenches.  Often, special nose extensions or reaction arms are required and these can be purpose designed where a specific application has not been covered before.

Static Equipment


Any mining or mineral refining site will have abundant need for accurate torque control.  Applications where equipment failure can result in down-time costing hundreds of thousands of dollars per day drive home the need to bolt correctly every time.

A classic example of this is mill liner bolting.  Traditionally used impact wrenches lack the required torque control to reliably attach the mill liners, and have serious health and safety implications for operators due to extended periods of exposure to noise and vibration.  Norbar PneuTorques provide smooth, continuous and controllable torque with low noise and exceptionally low vibration levels and are now a popular choice for mill liner bolting.

Due to the extremely demanding nature of the environment in which the mill liner bolt functions, a further stage of validation is often employed.  Using ultrasound, Norbar’s USM-3 can accurately establish the tension in the bolt by measuring the bolt extension due to the tightening process.  The USM-3 has been laboratory and field proven to be the most accurate, reliable and cost effective solution to bolting failures which could place workers at risk, lead to lost production and cause damage to capital equipment.

Flange bolting is another application where PneuTorques can demonstrate their outstanding combination of accurate torque control and low noise and vibration.  However, for low height applications hydraulic torque wrenches will often be the preferred method of bolting.  Norbar offers both Square Drive Series “NSD” and Hex Link Series “NHCL” hydraulic wrenches, specifically designed for extremely low height access applications.  Our robust and lightweight aluminium body completely encloses the drive train keeping the crucial lubricant inside the tool while significantly reducing the opportunity for contamination from the outside elements.

Hydraulic Ram Benches


Hydraulic Ram BenchesKeeping hydraulic equipment maintained in good working order is fundamental to the smooth running of any mine site.  PneuTorque® pneumatic wrenches have proved outstanding in the application of releasing and re-tightening the gland nut on the rod assembly of hydraulic cylinders.  On the largest equipment, the gland nut release torque is sometimes in excess of 100,000 N•m and this fact has resulted in the development of Norbar’s largest PneuTorque®, the 300,000 N•m output PT18.

Valve Actuation


Valve ActuationThe combination of speed, lightness, low noise, reduced vibration and torque control makes PneuTorque® wrenches ideal for many non-bolting applications.  Of these applications, it is in the field of valve actuation and valve grinding in the alumina refining industry that PneuTorques have so far had the biggest impact.  Two speed tools have proved the most popular as they provide rapid opening and closing of the valve together with high torque for grinding the caustic deposit that accumulates on the valve seat.  However, it is not just in the alumina refining industry that PneuTorques are used for valve actuation.  The actuation of water valves and gas valves are now common applications.

Engineer To Order Product Service


The diverse needs of the mining and mineral refining industry mean that Norbar’s standard products are not always suitable.  This is particularly true with regard to difficult to reach bolts; for example, deeply recessed wheel bolts.  Very often, specially designed reaction arms or nose extensions are essential.  Norbar therefore offers an Engineer to Order service that spans a range from modified reaction arms through to one off tools or measurement systems.

If you have a unique or bespoke requirement that cannot be catered for using standard Norbar product then please enquire about the Engineer to Order service to discuss your requirements:

E. sales@norbar.com T. 01295 753 600

SALES LITERATURE
 

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Mining & Refining Industry Sales Leaflet

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Norbar Torque Tools. 45-47 Raglan Avenue, Edwardstown, SA 5039, Australia