All DTH hammer must be frequently disassembled and inspected for damage or wear. How
often the down the hole hammer will be inspected depends on the drilling
conditions. When used for standard dry drilling (little or no water),
an inspection every 175 hours to 200 hours will be enough. When using
the hammer in wet conditions, in holes where mud is found, in water
wells, when using water or foam injection, or when drilling in very hard
rock, an inspection should take place every 100 hours. Damaged or worn
parts must be replaced immediately. Also, a standard check of the tool
after its first day of operation is beneficial to detect any early
kind of dirt, dust or dampness can shorten the life of the parts or
interfere with the quality of the oil twice as quickly. Close attention
to the use of the hammer, its operating pressure, operating hours and
penetration rate will inform its owner of safe service intervals.
DTH Hammer Operations:
The hammer's penetration comes from air flow and air pressure in the piston case. The cleaner the air and the sharper the DTH bit, the better performance and longevity you will get from the hammer.Close attention should be kept to the hammer’s operation. It is a heavy tool, and can hurt someone or become damaged if dropped. Be sure to have a clear area when moving the hammer. Do not exceed suggested operating limitations for its use. Always use the proper tools for assembly and disassembly, don't improvise, this will ensure that your dth hammer works effectively for a long time to come.
safety precautions must be followed. Improper or negligent use of
hammers and other drilling products can result in bodily injury or death
to persons, and/or severe damage to the hammer and parts.
During maintenance, use tools specifically designed for the hammer’s
measurements. Don't adapt other tools because they are close in
measurement and temporarily convenient; the hammer can be damaged this
way, and its lifespan shortened.
Threads must be properly cleaned before they can be used. If any former thread compound is present, clean thoroughly prior to preparation with a wire brush and solvent. If any irregularities are found on the threads, such as burrs or nicks, remove them with an emery cloth for box threads and a file for pin threads. Dry with compressed air when finished.
coat threads and mating shoulders with compound of which at least 40
percent must be a powdered lead, zinc or copper. Avoid anything heavier
to coat threads that might cause a large reduction in the friction
coefficient. Do not let any of the compound find its way into other tool
parts while in use.
the DTH hammer is rotated onto drill rod, make sure thread connections
are firm and tight. If not, they may need to be rechecked for excess
compound or the shoulder refaced. If the connections seem good, tighten
them with a wrench to proper torque. Do not depend on drilling action to
tighten the threads later; make sure all are checked and tightened
prior to any use.
always is the obvious key to maintaining the life and productivity of
the hammer. Rock drill oil is an effective lubricant, and has three
grades for varying environmental conditions – grades 10 (light), 30
(medium) and 50 (heavy).
On occasion, excess oil will drain down the drill rods into the hammer when it is not in use, and may demand a cleaning of the parts. Also, when using the hammer in cold and wet conditions, place it as far into the hole as possible to take advantage of ground heat. If parts are new, use an extra quart of oil per new joint of drill pipe. Also, use higher grades when in atmospheric conditions that can affect viscosity, such as water.
Contact: Mr. Peter Chan
Phone: +86 851 8577 3056
Add：No. 128, Changling South Road, Guanshanhu District, Guiyang City, Guizhou Province, China.