| Customization: | Available |
|---|---|
| After-sales Service: | Provided |
| Warranty: | Provided |
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4'' COP44 / DHD 340 / QL 40 Shank Down The Hole DHT Hammer for Hard Rock Drilling
Production 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 | 6.5 | HD4501 |
| 2.O-Ring of Top Sub | 0.01 | HD4502 |
| 3.Check Valve | 0.42 | HD4503 |
| 4.Spring | 0.04 | HD4504 |
| 5.Compression Buffer | 0.04 | HD4505 |
| 6.Air Distributor | 2.2 | HD4506 |
| 7.Internal Cylinder | 2.3 | HD4507 |
| 8.Piston | 9 | HD4508 |
| 9.External Cylinder | 15 | HD4509 |
| 10.O-Ring of stop ring | 0.01 | HD4510 |
| 11.Stop Ring | 0.2 | HD4511 |
| 12.Drive Chuck | 3.5 | HD4512 |
| 13.Drill Bit | 9 | HD4513 |
| 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. | ||
|
Length |
Weight |
External Diameter |
Bit Shank |
Hole Range |
Connection Thread |
|
|
(Less bit) |
(Less bit) |
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|
1030mm |
39.0kg |
99mm |
COP44 DHD340 |
110-135mm |
API 2-3/8''REG |
|
|
Working Pressure |
Impact rate at 0.5 Mpa |
Recommended Rotation Speed |
Air Consumption |
|||
|
1.2-2.5Mpa |
27HZ |
25-40r/min |
1.0Mpa |
1.8Mpa |
2.4Mpa |
|
|
6m3/min |
10m3/min |
15m3/min |
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Service
In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.
We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.
Warranty |
Spare parts |
| Every equipment issued shall enjoy a one-year/2000 working hour warranty period, during which we will repair or replace the defective parts free of charge if material or process defects occur and spare parts are in normal working condition. |
JCDRILL is dedicated to provide our clients with genuine spare parts with the highest quality,exact fitness and appropriate function.with our global distributor network,you are guaranteed with fast deliveries and services
|
1.Q: Are you original manufacturer?
A: Yes, we JCDRILL is a official leading manufacture in drilling machinery in China and we have the whole series products you need.
2.Q: How long will the delivery time take?
A: Normally mud pump products will take about 3-15 days to produce the ordered machines. Most of the time, we can have an immediate delivery of our regular machines in 15 days.
3.Q: Which payment terms are available to us?
A: T/T term or L/C term. On T/T term, 30% down payment is required in advance, and 70% balance shall be settled before shipment. On L/C term, a 100% irrevocable L/C without "soft clauses" can be accepted.
4.Q: How about after sales service?
A: 365×24 Year-round Service
We are committed to year-round 24-hour service even during holidays, in line with our policy of always providing "a response within 15 minutes and job completion within 24 hours."
5.Q: Which Incoterms 2010 terms can we work?
A: We JCDRILL are a professional and international company, accept all Incoterms 2010 terms, normally we work on FOB, CIF, CFR, CIP.
6.Q:Spare Parts When You Need Them
A:We have spare parts centers across continents that stock specialist spare parts. We promise that spare parts will be delivered within 72 hours or no more than one week.
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