Reverse Circulation Drilling Tools Pr40

• Customization: Available
• After-sales Service: Yes
• Warranty: 6 Months
• Certification: ISO 9001:2015
• Standard: GB/T2828.1-2003
• Surface Treatment: Painting
• Manufacturing Process: Machining
• Material: Alloy Steel
• Length: 1252mm
• Weight: 52.00kg
• External Dimater: 107mm
• Bit Shank: Re004
• Hole Range: 111-127
• Connection Thread: 3.5"-4" Remet 4"Metzke
• Working Pressure: 1.0-3.0MPa
• Impact Rate at 1.5MPa: 30Hz
• Recommended Rotation Speed: 25-40r/Min
• Transport Package: Plywood Carton or Plywood Pallet
• Specification: RC4-E004
• Trademark: Maxdrill
• Origin: China
• HS Code: 8431432000
• Production Capacity: 10000

Product Description

Reverse Circulation Drilling Tools PR40

Product Show


Product Description
Introduction of R.C. Drilling and R.C. DTH Hammers

It has the following characteristics:
    R.C. Drilling,referred to as "Center Sample Recovery" or "Dual Wall Drilling", employs a Dual Wall Pipe where the drilling medium, normally high pressure air,is passed between the outer and inner tubes down to the face of the drilling bit where it is returned up the centre tube along with the sample cut by the drill bit.

The use and the advantages of the R.C. DTH Hammers:
    No contamination
The R.C. System collects sample through the recovery holes in the face of the drill bit immediately as the cuttings or sample is formed.The drilled sample does not have to travel the length of the hammer where contamination and loss of sample takes place. 

    Higher Production
In broken and fractured ground conditions, the R.C. will often out perform the conventional hammer in terms of penetration rates.

    Dry Sample
Even in certain water bearing stratas it is still possible to collect a dry sample because the cuttings(sample) are collected as they formed through the face of the drill bit.

    Higher Sample Recovery
Because the sample is collected through the face of the drill bit there is no loss of sample when drilling through broken or fractured ground. And since the bit matched to the chuck size,there is very little bypass of sample and recovery rates of up to 98% are generally achievable.

4" R.C.Hammers	Item Description	Weight(Kg)	Part Number
1	Circlip	0.02	RC4-E004-01
2	"O"Ring	0.02	RC4-E004-02
3	Adaptor Screen	1.06	RC4-E004-03
4	"O"Ring	0.02	RC4-E004-04
5	Top sub	7.79	RC4-E004-05
6	Plunger	0.51	RC4-E004-06
7	"Y"Ring	0.02	RC4-E004-07
8	Spring	0.06	RC4-E004-08
9	Sample tube Uper	0.74	RC4-E004-09
10	"O"Ring	0.02	RC4-E004-10
11	"O"Ring	0.02	RC4-E004-11
12	Sample tube lower	2.38	RC4-E004-12
13	Spring washers	0.17	RC4-E004-13
14	Distributor	1.75	RC4-E004-14
15	"O"Ring	0.02	RC4-E004-15
16	Linner Cylinder	2.45	RC4-E004-16
17	Piston	10.45	RC4-E004-17
18	Piston Case	17.95	RC4-E004-18
19	Bush Drive Sub	1.77	RC4-E004-19
20	Bit Retaining Ring	0.29	RC4-E004-20
21	"O"Ring	0.02	RC4-E004-21
22	Shroud	1.05	RC4-E004-22
23	Drive Sub	3.13	RC4-E004-23
24	Drill bit	11.7	RC4-E004-24

Technical Date

Length(exclusive bit)	Weight(exclusive bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1252mm	52.0kg	107mm	RE004	111-127	3.5"-4"Remet 4" Metzke
Working Pressure	Impact rate at 2.4Mpa	Recommended rotation speed	Air Consumption
			1.7Mpa	2.4Mpa	3.0Mpa
1.0-3.0Mpa	30Hz	25-40r/min	8m³/min	12m³/min	16m³/min

Production Process

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Wide Application

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FAQ

The information you may like to know before order:

1. Methods of Payment:

  T/T (Telegraphic Transfer) or Western Union or L/C at sight

2. Handling time for an order

  Based on order quantity, normally it takes 25 days for production.

  Only 2 or 3 days if we have stock on your request size.

3. Shipping way

  Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air

  Bulk order: we suggest by air or by sea.

4. Quality Control

  We have our own experienced QC.

  There will be strict inspection and testing for every order before shipping out.

5. After Services:

  a. Our sales team will response for your question within 24 hours (Holidays Excluded)

  b. Technical Support will be available in any time

  c. Free replacement will provide once the failure confirmed caused by our product quality

Contact Information
Contact Person:Ms Sherry Lee
 
Website:maxdrillrocktools.en.made-in-china.com