Hunan New Diamond Construction Machinery Co., Ltd.
Hunan New Diamond Construction Machinery Co., Ltd.

Hunan New Diamond Construction Machinery Co., Ltd.

Home ProductsReverse Circulation Hammer

Deep Water Well Drilling Hammer Heavy Weight With 25-40 R/Min Rotation Speed

Deep Water Well Drilling Hammer Heavy Weight With 25-40 R/Min Rotation Speed

  • Deep Water Well Drilling Hammer Heavy Weight With 25-40 R/Min Rotation Speed
Deep Water Well Drilling Hammer Heavy Weight With 25-40 R/Min Rotation Speed
Product Details:
Place of Origin: Hunan, China (Mainland)
Brand Name: New Diamond
Certification: ISO9001:2008
Model Number: Reverse Circulation Hammer
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Carton packaging and wooden box packing
Delivery Time: 5-8 work days
Payment Terms: L/C, T/T, Western Union
Supply Ability: According to order quantity
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Detailed Product Description
Type: Hammer Processing Type: Forging
Use: Ore Mining Color: Required
Machine Type: Drilling Equipment Material: Alloy Steel
High Light:

rc hammer


rock quarry tools


Down the hole rock tools (drilling tools) are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powderto a down-the-hole bit to crush rocks.

1. Based on previous experience of ordinary hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.


2. The internal structure is very simple with components of high rigidity, thus ensuring long life and easy maintenance of the hammer.


3. The collection tube adopts an integrative design and can be replaced without disassembling the hammer. With carburizing treatment, it has good abrasive resistance.


4. Equipped with bits designed with patent. Simply by replacing the drill bit, the same hammer
can drill holes of different sizes ensuring that the sample is not contaminated.


5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.


Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes,geothermal exploration hole, Well bore and other fields.



Technical Data
Length(Without Bit) NRC45 NRC55 NRC65 NRC52
1020mm 1111mm 1250mm 1208mm
Weight(Without Bit) 94.00 kg 66.50 kg 110.00kg 70.00kg
External Diameter Ø99mm Ø126mm Ø146mm Ø126mm
Bit Shank NRC45 NRC55 NRC65 PR52
Hole Range Ø114-Ø127mm Ø133-Ø15mm Ø155-Ø190mm Ø133-Ø146mm
Connection Thread Custom support Custom support Custom support Custom support
Working Pressure 1.0-3.0Mpa 1.5-3.5Mpa 1.5-3.5Mpa 1.5-3.5Mpa
Impact Rate at 17 Bar 30HZ 35HZ 28HZ 35HZ
Recommended Rotation Speed 25-40 r/min 25-40 r/min 25-40 r/min 25-40 r/min
Air Consumption 1.0Mpa:8m³/min 1.7Mpa:16m³/min 1.7Mpa:20m³/min 1.7Mpa:16m³/min
1.8Mpa:12m³/min 2.4Mpa:22m³/min 2.0Mpa:26m³/min 2.4Mpa:22m³/min
2.4Mpa:16m³/min 3.0Mpa:28m³/min 3.0Mpa:35m³/min 3.0Mpa:28m³/min

Feature Advantage

1. Price commitment: in order to ensure the high reliability of products, raw material selection are using grapefruit brand products; under the same competitive conditions,and not to reduce product technical performance on the basis of sincerity at a favorable price to customers.

2. Quality commitment: product manufacturing and testing have quality records and inspection data; the performance of the product can withstand customer inspection.


3. Customer service: in order to create new diamond brand, enhance the visibility of enterprises, establish corporate image, we serve customers with the principle of "preferential prices, good service, reliable product quality" principle.




Item Description Weight(kg)
1, Internal Ciclip 0.03 0.04 0.05 0.04
2, Air Screen 0.35 0.44 0.65 0.44
3, Top Sub 6.50 9.65 20.00 9.65
4, “O”Ring 0.01 0.02 0.02 0.02
5, Sample Tube 5.10 6.72 12.50 6.75
6, Check Valve 0.25 0.68 0.85 0.68
7, Spring 0.04 0.12 0.10 0.12
8, “O”Ring 0.01 0.02 0.02 0.02
9, Air Distributor 0.85 1.48 3.50 1.48
10, “O”Ring 0.02 0.01 0.02 0.01
11, Internal Cylinder 2.20 4.12 4.20 4.12
12, Piston 8.50 16.90 24.00 16.90
13, External Cylinder 14.50 19.50 32.00 21.50
14, Guided Sleeve 1.20 0.90 5.50 1.90
15, “O”Ring       0.02
16, Stop “O”Ring       0.01
17, Stop Ring       0.32
18, Sharout       1.86
19, Drive Chuck 3.20 5.65 6.50 4.17
20, Bit Retaining Pin 0.01 0.15 0.30  
21, Drill Bit 10.50 15.80 31.00 11.05

Contact Details
Hunan New Diamond Construction Machinery Co., Ltd.

Contact Person: Rick.liao

Tel: +8618692219720

Send your inquiry directly to us
Hunan New Diamond Construction Machinery Co., Ltd.
PinJiang Industry Park,PingJiang county,YueYang City,Hunan,China.
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