Product Despcription

DTH Hammer: 3"-12"

Bit Size: 76mm-605mm

Down the hole hammers and drill bits are designed together to work in perfect unison,

ADVANTAGE:

• Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of DTH hammer designed according to newest rock drilling theory.

• Smooth performance and long service life of DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.

• Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer.

• Easy to depart bit from hammer due to multihead thread connecting chuck and cylinder of hammer.

• Interchangeable with DTH bit and drill pipe. Low pressure and high pressure hammers are available in our company.

Item Description	Weight(Kg)	Part Number
1.Top Sub	6.50	MD4501
2."O" Ring of Top Sub	0.01	MD4502
3.Check Valve	0.42	MD4503
4.Spring	0.04	MD4504
5.Compression Buffer	0.04	MD4505
6.Air Distributor	2.20	MD4506
7.Internal Cylinder	2.30	MD4507
8.Piston	9.00	MD4508
9.External Cylinder	15.00	MD4509
10."O" Ring of Stop Ring	0.01	MD4510
11.Stop Ring	0.20	MD4511
12.Drive Chuck	3.50	MD4512
13.Drill Bit		MD4513





• Technical Date

Length(Less Bit)	Weight(Less Bit)	External diameter	Bit shank	Hole Range	Connection Thread
1030mm	39.00kg	ø99mm	DHD340	ø110-ø135	API2 3/8"Reg




Working Pressure	Impact Rate At 1.7Mpa	Recommended Rotation Speed	Air Consumption
1.0-2.5Mpa	28HZ	25-40r/min	145-350PSI 200-600CFM