Low air pressure DTH hammer

• Product introduction
• Product parameters

Introduction to Low air pressure DTH hammer

The DTH hammer is a component of the DTH drilling tools and belongs to the working device of the DTH drilling tools. DTH hammer is divided into low air pressure DTH hammer, medium air pressure DTH hammer and high air pressure DTH hammer, which are used for blast hole drilling and water well drilling project.

Low air pressure DTH hammer Advantage

• High quality alloy steel materials and advanced processing technology adapted.

• Piston with simple but compact design offering long using life.

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

• The top sub and the drive chuck have special thread, which can achieve an easier disassemble.

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

Specifications：

Item	76A HAMMER	90A HAMMER	110 HAMMER	130 HAMMER
Hammer length without bits:	811MM	855MM	871MM	890MM
Top sub thread:	F48*10PIN	F48*10PIN	API 2 3/8” REG BOX	API 2 3/8” REG BOX
Outside diameter：	66MM	80MM	98MM	112MM
Weight：	13.5KG	22KG	33KG	48.5KG
Bit diameter：	76MM	90-120MM	110-150MM	130-175MM
Working pressure：	4-10BAR	5-10BAR	5-10BAR	5-10BAR
Air consumption：	6-10 m³/min	7-12 m³/min	7-12 m³/min	7-12 m³/min
Bit shank:	CIR76	CIR90	CIR110	CIR110/CIR130
Item description	Part Number	Part Number	Part Number	Part Number
Top sub	76A-01	90A-01	110-01	130-01
Cap	76A-02	90A-02	110-02	130-02
Check valve	76A-03	90A-03	110-03	130-03
Spring	76A-04	90A-04	110-04	130-04
Shim	76A-05	90A-05	110-05	130-05
Rubber ring	76A-06	90A-06	110-06	130-06
Valve cap	76A-07	90A-07	110-07	130-07
Valve	76A-08	90A-08	110-08	130-08
Air distributor	76A-09	90A-09	110-09	130-09
Inner cylinder	76A-10	90A-10	110-10	130-10
Piston	76A-11	90A-11	110-11	130-11
GUide sleeve	76A-12	90A-12	110-12	130-12
Driver sub	76A-13	90A-13	110-13	130-13
Outer sleeve	76A-13	90A-14	110-14	130-14