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Water Well Drilling 4'' DTH Hammer Without Foot Valve With Bit Shank HD45A

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Water Well Drilling 4'' DTH Hammer Without Foot Valve With Bit Shank HD45A

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Brand Name :	SOLLROC
Model Number :	HD45A
Certification :	SGS
Price :	negotiable
Payment Terms :	T/T,
Supply Ability :	10000 pieces/month
Delivery Time :	18 working days

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Water Well Drilling 4'' DTH Hammer Without Foot Valve With Bit Shank HD45A

4'' DTH Hammer without Foot Valve for Water Well Drilling with Bit Shank HD45A

Product description:

A down-the-hole hammer provides a solution to the problem of removing hard rock barriers encountered in a bore. The DTH hammer resembles a small jack hammer. It screws onto the end of a drill string like a section of drill pipe. Like the jack hammers used above ground, it's air-powered with a high cyclic rate; unlike jack hammers above ground, it combines its fast-action hammer with a rotary, drilling action. This combined action rotates its chisel-like tip as it drives into the rock, breaking it into chips and dust. Because the DTH hammer is pneumatically powered, it has an air exhaust, which blows the chips and dust from the bore.

Product Advantages:

1. Better borehole quality and accuracy
2. High performance drilling
3. Safer drilling in sensitive formations
4. cost-efficient and environmentally friendly drilling

DTH Hammer specification:

HD45A hammer

shank	HD45A
Length(less bit)	1011mm
External diameter	92mm/99mm (optional)
Top sub thread	API 2 3/8”REG
Weight(less bit)	39kg
Hole range	110mm-130mm
Working pressure	1.0-2. 5Mpa(145-362.5psi)
Impact rate at 1.7Mpa	30Hz
Recommended rotation speed	22-35rpm

HD45A bit specification

For 4" hammer DTH bits shank	Bit Dia.		No. Air Holes	Gauge Buttons	Front Buttons	Weight (Kg)	Part No.
For 4" hammer DTH bits shank	mm	inch	No. Air Holes	Gauge Buttons	Front Buttons	Weight (Kg)	Part No.
HD45A	105	4 1/8"	2	6×φ14	5×φ13	9.0	DHD340-105
	110	4 1/4"	2	7×φ13	6×φ13	9.3	DHD340-110
	115	4 1/2"	2	7×φ14	6×φ13	10.0	DHD340-115
	120	4 3/4"	2	8×φ14	6×φ14	11.0	DHD340-120
	127	5	2	8×φ14	7×φ14	12.0	DHD340-127

Face shape Features:
Water Well Drilling 4'' DTH Hammer Without Foot Valve With Bit Shank HD45A

Concave face is suitable for all-round rock formation, especially for medium hard and homogeneous rock formations,excellent control over hole deviation.

Convex face is suitable for medium hard rock formation.Non abrasive rock formations. High peneration rate.

Flat face is suitable for hard and abrasive rock formation.High peneration rates and resistance to steel wash.

Detailed photos:

Water Well Drilling 4'' DTH Hammer Without Foot Valve With Bit Shank HD45A

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