Pit & Quarry, November 2015
existing seams or lines It is often the tool of choice when a sharper tool is ineffective Chisel Tools The main function of these tools is to direct the breakers energy to a head that looks like a sharpened pencil point or a flat screwdriver On impact the head weakens a mass by chiseling cracks or opening seams that can be further broken down There are two categories of chisels that are commonly selected for use in aggregate operations in line and cross cut Each type is engineered to direct the breakers force in specific directional patterns 3 Avoid blank firing The most damaging action to a hydraulic breaker is blank firing Many manufacturers have improved breaker technology to include blank fire protection that employs a hydraulic cushion at the base of the cylinder bore to dampen the movement of the piston It also protects the hammer from metal to metal contact EQUIPMENT FOCUS CRUSHING SECONDARY BREAKING The combination of new technology and versatility means quarry producers have more choices to make when selecting a hydraulic breaker decreasing the likelihood of premature deterioration of the breaker and its bushings retaining pins and front guide When working in mining and aggregate applications you can significantly improve breaker life by selecting a hydraulic breaker model with standard package blank firing technology 4 Make protective housing a top priority An enclosed breaker design one in which the breaker is cradled inside a protective housing can also extend the life of a breaker attachment The housing protects the power cell from damage and reduces noise level It also prevents dust and debris from entering the bushings and disrupting the performance of the breaker The suspensions also decrease vibration for enhanced operator comfort 5 Insist on auto adjusting impact When a hammers stroke can be adjusted operators can match breaker frequency to material hardness Automatic variable speed technology senses changes in material hardness and adjusts impact energy and striking rate reducing harmful energy transferred back to the carrier Selecting a breaker with automatic variable speed technology can improve productivity and in turn profitability Following these five best practices can help you select the right breaker attachment regardless of model size and make of equipment carrier P Q Jamie Jackson is with Two Rivers Marketing and information for this article is courtesy of Montabert www montabert com www pitandquarry com November 2015 PIT QUARRY 21
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