Ask BA: Why do Tools Break?

Download the Atlas Copco working tools brochure for more information.

There are many reasons why hydraulic breaker working tools fail.

Very rarely is it a manufacturing fault when considering quality working tools made from nickel chromium alloy, which possesses all the important qualities needed to withstand the arduous conditions hammer tools work under.

Some reasons working tools break can be summarised by the following:

Lever breaks – tools are used at wrong angles or are used as crowbars to either free a stuck tool or help remove rock or concrete that is not broken all the way through.

Blank firing – this occurs when the tool is not engaged and the hammer is fired for long periods.

Metal welding – this results from either a lack of lubrication or incorrect tool working angle which squeezes out grease and causes the tool/bush to make contact, allowing a small crack to form due to the heat created while this contact is made.

Torsional break – where a chisel will twist & snap trying to follow the natural contour of a rock formation.

Ways to Minimise Tool Breakage

Some ways to minimise tool breakages are:

Operator training – BA Equipment Group can provide assistance to train operators
should this be required.

Using bronze bushes instead of steel – It should be noted that utilising bronze bushes will increases the frequency of bush replacements as bronze will wear quicker than steel.

Using a shorter tool rather than a long one which can reduce the lever effect during operation – BA Equipment Group can supply tools of any length to suit your application.

Please contact your local BA Equipment Group office if you need further information or assistance.