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Down the Hole Hammer 

 

VKP 95-1

  

 




 


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Summary of Contents for VKP 95-1

Page 1: ...Down the Hole Hammer VKP 95 1 O P E R A T I O N M A N U A L...

Page 2: ...ntents Preface 3 Principles of Operation 3 Specifications 3 Parts List 4 Safety Precautions 4 Preparation for Drilling and Drilling 5 Lubrication 6 Weight on Bit 7 Rotation Speed 7 Suggested Operating...

Page 3: ...ve in a wide range of rock types ranging from unconsolidated limestones to the hardest granite and quartz formations Since the hammer force is applied directly to the drill bit power transmission loss...

Page 4: ...UCK IR3 5 OPTIONAL 2 273109 O RING 55X2 3 2361120 SPLIT RING VKP 95 1 3 2361510 SPLIT RING IR3 5 OPTIONAL 4 4342580 CYLINDER 5 5009200 PISTON COMPL 6 722090 PISTON VALVE 7 5100060 BACKHEAD ASSEMBLY 8...

Page 5: ...lling conditions If the drilling formation is known proper precautions can be taken to avoid potential danger Respect the equipment Do not operate the hammer at excessive pressures or speeds Follow th...

Page 6: ...tend to blow the hole apart After a few feet of drilling increase the total weight on the bit until the hammer runs smoothly The air pressure will rise slowly then stabilise Caution Always apply the...

Page 7: ...sive formations Do not use high rotary speed Using too high of a rotary speed leads to scuffing or breakage of the carbide inserts on the drill bit Adjust the rotation to obtain the best drilling rate...

Page 8: ...ill bit carbides always sharp to keep the maximum penetration rate avoid bit breakage and reduce hammer overload Important Do not reverse rotate the drill pipe due to the danger of unscrewing either t...

Page 9: ...mer into service With the hammer assembled and immediately before returning to service pour for some rock drill oil into the hammer Fill the level of the backhead then release the check valve allowing...

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