Delivery Time:In stock or as order quantity
Certification:ISO,CE

High Pressure Rock Drilling DTH Hammer , Downhole Hammer with Foot Valve

5\'\' COP54 , DHD350R Shank High pressure rock drilling DTH hammer with foot valve

Introduction

It is a kind of valveless high air pressure DTH hammer with foot valve.

The rock hammer has the fellow advantages

1: Valveless air distribution. more reliable.

2. The rock impacter are simple design of the piston, long life.

3. More efficient energy transfter,faster drilling speed, lower air consumption and lower oil consumption.

4. Fewer internal parts, simple structure, long life, less failure and easier to maintain because all the parts are heat treated.

5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected multi-step thread.

Hammer shank available:
1. BR shank series: BR1, BR2, BR3;
2. Cop shank series: Cop32, Cop34, Cop44, Cop54, Cop64, Cop84;
3. DHD shank series: DHD3.5, DHD340,DHD350, DHD360, DHD380;
4. SD shank series: SD4, SD5, SD6, SD8, SD10, SD12, SD15, SD18;
5. Mission shank series: Mission40, Mission50, Mission 60, Mission 80;
6. QL shank series: QL30, QL40, QL50, QL60, QL80;
7. NUMA shank series: NUMA120, NUMA125, NUMA180, NUMA240;
Other hammer shanks can be available according to customer\'s drawing or samples.

Technical Parameters of High air pressure DTH hammer with foot valve

Specification

	Item Description	Weight	Parts No.
1.Top Sub	15	HD5501
2.O-Ring of Top Sub	0.01	HD5502
3.Check Valve	1	HD5503
4.Spring	0.04	HD5504
5.Compression Buffer	0.06	HD5505
6.Air Distributor	3.7	HD5506
7.Internal Cylinder	4.5	HD5507
8.Piston	15.5	HD5508
9.External Cylinder	30	HD5509
10.O-Ring of stop ring	0.01	HD5510
11.Stop Ring	0.3	HD5511
12.Drive Chuck	6.4	HD5512
13.Drill Bit	16	HD5513
According to customer\'s requirement,the top sub can be made into two spanners,and put protection buttons,An air controllinghole can be drilled on the check valve to provide more efficient cuttings discharge.

Technical Data
Length(Less bit)	Weight(Less bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1214mm	76.5kg	125mm	COP54   DHD350R	135-155mm	API 2-3/8\'\'REG API 3-1/2\'\'REG
Working Pressure	Impact rate at 0.5 Mpa	Recommended Rotation Speed	Air Consumption
1.2-2.5Mpa	25HZ	20-35r/min	1.0Mpa	1.8Mpa	2.4Mpa
9m3/min	15m3/min	23m3/min

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