4 Inch HM4A DTH Hammer Drill With Drilling Machine.

SIZE:1-12 inch drill hammer with many model and style, if you like them, plz contact me at once. Welcome you visit our company and web,.

Drilling hammer style

1. low air pressure DTH hammers

2.middle air pressure DTH hammers

3. high air pressure with foot valve DTH hammers 

4.high air pressure without foot valve DTH hammers

5.big hole high air pressure DTH hammers

6.reverse circulation hammers 

Application

We can offer the size of widely range with 1-12inch drill hammer .It is widely used in industries relating to energy,tranportation,metallurgy,building,water well station ,orl mining engineering and coal mining and road,railway sturction and rock drilling etc.

 Advantage

DTH  hammer is one of our main products.It is durable for being produced with advanced craftwork and good material.

It also has the following feartures:

1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption

2. Smooth performance and long service life

3. Low problem rate and easy to maintenance

4. Easy to depart bit from hammer

5. Interchangeable with dth bit and drill pipe.

Specification 

Main structure description

Trouble shooting

1.Fault: wear or scoring caused by inadequate or no lubrication.

Cause: Oil does not reach the impact structure of the DTH hammer.

2.Fault:Impact the lubrication device,Increase oil if necessary,Or increase oil dosage.

Cause:a> Air way is throttled or blocked.

 b>Too much clearance between the piston and the internal cylinder,or between the piston and the external cylinder,or between the piston and the air distributor.

c> The DTH hammer is dogged by impurities.

d>Piston failure or foot valve failure.

3.Fault:Lost drill bit  and driver chuck.

Cause:Impact mechanism was operated with out right-hand rotation.

About us 

Qingdao Ligaoxin Machinery Co., Ltd. is a sales and aftersales service as one of the main scientific and technological company, has long been committed to the air compressor industry and the development of drilling industry. And with many famous brand enterprises to establish a good and stable partnership, forming a cooperative mechanism with strong vitality, interdependence and common development.

Corporate culture: innovation, cooperation, win-win.

 Business philosophy: in good faith principle, industry and technology oriented , to win through good service.

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