Centre Sample Recovery 3.5"/4" Remet Or 4"Metzke RE004 RC Hammer

Introduction of R.C. Drilling

R.C.drilling, referred to as"Centre 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 Hammer

I) 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.

2) Higher Production

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

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

4) Higher Sample Recovery
Because the sample is collected through the face of e 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.

Reverse Circulation Hammers​ Specification:

4" RC Hammer	Item Description	Weight(kg)	Part Number
	A Top sub Assy Remet 3.5"
	1 Circlip of top sub	0.03	004-R3.5-01
	2 O Ring of Adaptor Screen x3	0.02	004-R3.5-02
	3 Adaptor Screen	0.85	004-R3.5-03
	4 O Ring of Adaptor Screen x2	0.02	004-R3.5-04
	5 Top sub	8.45	004-R3.5-05
	B Top sub Assy Remet 4"
	1 Circlip of top sub	0.03	004-R4-01
	2 O Ring of Adaptor Screen x2	0.02	004-R4-02
	3 Adaptor Screen	1.05	004-R4-03
	4 O Ring of Adaptor Screen x2	0.02	004-R4-04
	5 Top sub	7.80	004-R4-05
	C Top sub Assy Metzke 4"
	1 Circlip of top sub	0.03	004-M4-01
	2 Adaptor Screen	0.85	004-M4-02
	3 O Ring of Adaptor Screen x2	0.02	004-M4-03
	4 Top sub	7.60	004-M4-04
	Parts List
	6 Plunger	0.55	004--05
	7 Y Ring of Plunger x1	0.02	004--06
	8 Spring	0.06	004--07
	9 Sample Tube Upper	1.10	004--08
	10 O Ring of Sample Tube x2	0.02	004--09
	11 O Ring of Sample Tube x1	0.02	004--10
	12 Sample Tube	2.65	004--11
	13 Compressoin buffer	0.20	004--12
	14 Air Distributor	1.85	004--13
	15 O Ring of Air Distributor x1	0.02	004--14
	16 Inner Cylinder	2.45	004--15
	17 Piston	10.45	004--16
	18 Piston case	17.85	004--17
	19 Bush drive sub	1.75	004--18
	20 Bit retaining ring	0.30	004--19
	21 O Ring of Bit retaining ring X1	0.02	004--20
	22 Shroud	1.02	004--22
	23 Drive sub	3.05	004--23
	24 Drill bit		004--24

RE004 RC Hammer Technical Parameters

Applications

1. Mine and quarry
2. Road construction for the drilling and blasting work
3. Water well drilling
4. Slope protection

working principle

Pictures

KSQ Technologies (Beijing) Co. Ltd. has significant experience and know-how in the supply of materials, components, finished goods, specially designed/engineered equipment, and services from China. The company caters to medium to large scale clients who are doing projects and capital expansion, as well as to firms who require support with consumable products, maintenance, and repair operations.