Introduction to tapered drill rods

Tapered drill rod effective lengths are measured from the collar to the bit end, which are usually from 0.6meter to 3.6 meters.

Parameters

Shank sizes: Hex.19mm, Hex. 22mm, Hex.25mm
Taper degrees: 7°, 11°, 12°.
Length: 400 – 8000mm.

Specifications：

Drilling duties in tunneling, construction, mining, quarrying, etc.

22mm（7/8″）Tapered drill rods	L		Taper Degree	Weight (kg)
	mm	foot/inch
H22×108 Shank	500	1′ 5/8″	7o	1.5
	800	2′7 1/2″		2.4
	1000	3′3 3/8″		3
	1200	3′11 1/4″		3.6
	1500	4′ 11″		4.5
	1800	5′10 7/8″		5.5
	2000	6′6 3/4″		6.1
	2200	7′2 5/8″		6.7
	2500	8′2 3/8″		7.6
	3000	9′10 1/8″		9.1
	3500	11′5 3/4″		10.6
	4000	13′1 1/2″		12.1
	4500	14′9 1/8″		13.6
	5000	16′4 5/8″		15.1
	6000	19′8 1/4″		18.2
	7000	22′11 5/8″		21.2
	8000	26′ 3″		24.2
H22×108 Shank	800	2′7 1/2″	12o	2.4
	1200	3′11 1/4″		3.6
	1600	5′ 3″		4.9
	2200	7′2 5/8″		6.7
	2400	7′10 1/2″		7.3
	3200	10′ 6″		9.7
H22×108 Shank	1800	5′10 7/8″	7o	5.5
	2000	6′6 3/4″		6.1
	2500	8′2 3/8″		7.6
	3000	9′10 1/8″		9.1
	3500	11′5 3/4″		10.6
	4000	13′1 1/2″		12.1
	5000	16′4 5/8″		15.1

Introduction to tapered drill rods

Taper bits, especially Tapered button bits are the most popular tapered drill bits with a wide selection of head diameters from 26mm to 48mm. With carbide buttons hot pressed on the bit skirts, tapered button bits have a good drilling performance and are excellent in longevity.

Features

• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
• Alloy buttons are hot mounted into the drill bit, ensuring the bit good accuracy and durability;
• Reliability ensured by premium drill bit materials and premium alloy button;
• Different types designed for different drilling scenarios and rock conditions;
• Cost-effective, with competitive and reasonable price, our products offer 82%-92% lifespan of their famous branded counterparts.

Specifications：

Taper drill bits are connected to taper drill rods for drilling duties, suitable for tunneling, construction, mining, quarrying, etc.

Chisel Taper Bit	Cross Taper Bit	Button Taper Bit

	Taper Chisel Bits Taper Degree: 4°46′, 6°, 7° Diameter: 26-43mm
	Taper Cross Bits Taper Degree: 4°46′, 6°, 7°, 11°, 12° Diameter: 32-46mm
	4° 46′ Taper Button Bits Taper Degree: 4°46′ Diameter: 36-43mm
	7° Taper Button Bits Taper Degree: 7° Diameter: 32-41mm
	11° Taper Button Bits Taper Degree: 11° Diameter: 32-41mm
	12° Taper Button Bits Taper Degree: 12° Diameter: 30-42mm

Fully-carburized Taper Drill Rod is to increase the surface carbon content of the drill rod through the carburization craft, level up the surface hardness and the overall strength, and increase the service life of the taper drill rod. Compared with the conventional taper drill rod, Fully-carburized Taper Drill Rod is high in strength and good in abrasive resistance. Under the same industrial and mining, the life of fully-carburized taper drill rods is times of that of the common taper drill rods.

Taper degree: 4°46’, 6°, 7°, 11°, 12°

Shank specification: Hex.19mm, Hex. 22mm, Hex.25mm

Besides the regular drill rod length, our company can customize the product length according to the needs of the client.

Selecting the Right Bit

SHANDIKE has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house. These are deigned for specific applications for all rock types, hardness’s and condition. Bit life and rate of penetration are the most important criteria in selecting the right bit for a particular application.

Bit Face Shape Selection

	Drop Center For high penetration rates in soft to medium hard and fissured rock formations.Low tomedium air pressures.Maximum hole deviation control.
	Concave Face The all-round application bit face specifically for medium hard and homogenerous rockformations.Good hole deviation control and good flushing capacity.
	Convex Face For high penetration rates in soft to medium-hard with low to medium air pressures.It isthe most resistance to steel wash,and may reduce the load and wear on the gaugebuttons,but poor hole deviation control.
	Double Gauge Face This kind of face shape is suitable for fast penetration rates in medium to hard rockformations.Designed for high air pressures and good resistance to steel wash step gaugebit.
	Flat Face The Pineapple Bit can be dressed with ballistic buttons for use in soft to medium hard
	Pineapple Face The Pineapple Bit can be dressed with ballistic buttons for use in soft to medium hardformations where fractured rock can be expected,or can be supplied with spherical buttonsfor hard and abrasive formations.

Technical Date

Carbide Button Shape Selection

Round Button	Semi-Ballistic Buttons	Ballistic Button	Flat Button	Sharp Button

Product Codes

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.

Bit Shanks

Specification 

Introduction to dth hammers

The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.

In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.

As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).

Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Air Consumption / Operating Pressure

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.

Air Consumption / Operating Pressure

Specifications

Introduction to dth drill pipe

The DTH drill pipe consist of pipe and two adapters, box and pin. We use high strength and well-resistance alloy steel, inserting of high tensile seamless pipe, and according to different drilling depth, we can offer various thickness of pipe and material for customers’requirements.

DTH drill pipe Feature

• Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm

• Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm

• Thread: 2 3/8’’ API REG, 2 7/8’’ API REG, 3 1/2’’ API REG, 4 1/2’’ API REG，2 3/8″ API IF, 3 1/2″ API IF; BECO 6”, BECO 8”

• Wall thickness: 5.5mm/6.5mm/7.5mm/8.5mm/10mm

• Other spaecial size can be customized by customer’s drawing.

• Advanced heat treatment technology and friction welding mahcine.

Specifications

In case of jamming of any drilling tool in the boring process, the back hammer will assist you to solve the stuck problem by giving a backward impact power.

The back hammer may be mounted on the drill pipe joint between the borehole gripper and the swivel head, thus creating a combined effect of effective reverse impact and vibration.

The back hammer is consisted of three components and a plastic housing.

The housing acts both as an exhaust emissions guider and a muffler. With regards to the maintenance, it’s only necessary to keep it clean and the linking section we protected when the back hammer is not in use.

The reverse circulation hammer is used to collect underground rock and mineral samples quickly and efficiently using a pneumatic rotary drill. This hammer offers high speed and low cost per meter drilling. This type of drilling is considered ideal for obtaining mineral samples in the early phases of an exploration project. As all the rock cuttings in an RC hammer are recovered at the surface through the centre of the hammer and drill string, the samples collected through this method are uncontaminated. This hammer has also been designed to handle injection of water, foam, oil and polymers without any performance loss.

As all the rock cuttings in an RC hammer are recovered at the surface through the centre of the hammer and drill string, the samples collected through this method are uncontaminated. This hammer has also been designed to handle injection of water, foam, oil and polymers without any performance loss.

specifications

The Characteristics of RC hammer and bits

RC series reverse circulation DTH Hammer is the latest developed product of our company. It is mainly used for deep exploration drilling and stope ore grade control.
It has the following characteristics:
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 condition such as loose soil, hard rock and plenty of water exists, sampling can be done well.

RC 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 the 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.

Advantages of the RC system

1. No contamination

The RC 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 RC has more higher penetration rates than the conventional hammer.

3. Dry Sample

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

4. 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.

The RC bits are the tool cutting rock. Shandike RC DTH bits are made of superior quality alloy steel and T.C carbides.

Parameter

BD 531 Reverse Circulation Drill Bit & Shroud

RC3.5Y Reverse Circulation Drill Bit & Shroud

BD 004 Reverse Circulation Drill Bit & Shroud

BD 542 Reverse Circulation Drill Bit & Shroud

BD 543 Reverse Circulation Drill Bit & Shroud

BD 545 Reverse Circulation Drill Bit & Shroud

BD 040 Reverse Circulation Drill Bit & Shroud

BD 52 Reverse Circulation Drill Bit & Shroud

BD 54 Reverse Circulation Drill Bit & Shroud

Shandike GSE DHD DTH Hammers

DTH (down-the-hole) drilling involves a drilling hammer at the bottom of a drill string, the hammer is powered by compressed air transmitted via drilling rod to drive piston and produce impact power, which is then delivered into rocks for drilling and crushing. DTH drilling can be applied in mining, quarrying, water well drilling, foundation piling, etc. DTH hammer uses compressed air to produce impact power, thus to drive drill bits to crush rocks.

Features

• Premium material, fine CNC and heat-treatment manufacturing processes and optimized design;

• Good stability and reliability;

• High impact frequency;

• Lowered compressed air consumption;

• Long lifespan

Applications

Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc.

Structure

	01 – Top Sub	02 – O Ring	03 – Check Valve	04 – Spring
	05 – Steel Washer	06 – Rigid Valve	07 – O Ring	08 – Internal Cylinder
	09 – Pistion	10 – Out Tube	11 – Bit Retainer Ring	12 – O Ring
	13 – Drive Sub

GSE-DHD3.5 DTH Hammer

GSE-DHD340 DTH Hammer

GSE-DHD350 DTH Hammer

GSE-DHD360 DTH Hammer

GSE-DHD380 DTH Hammer

Eccentric overburden casing drilling systems

Casing drilling, or casing while drilling (CWD) process, is a concept that combining two time-consuming processes, drilling and casing together, performing them at the same time. During the CWD process, powered by DTH hammer, a central piloting bit drives a ring bit to drill a hole wide enough for a casing tube to slide down, drilling and casing processes are therefore performed at the same time.

Eccentric is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole. This is particularly design for shallow holes, as is often the case in water well drilling, geothermal wells and for shallow micro-piling work. Odex is ideal for short holes in consolidated overburden. The component of Eccentric system consists of Pilot bits, Reamer bits, Guide device and casing shoe.

When drilling, the reamer bit will rotate out to enlarge the hole which enough for the casing tube slide down behind the reamer. When reached required depth, the drill pipe will drill to the reverse direction and the reamer bit will retract, it is allowing the whole drilling system to pass through the casing.

Features

• Complete types of drilling tools suitable for casing tubes with various diameters;

• Good stability and reliability granted by premium alloy steel material and fine CNC manufacturing process;

• Cost-effectiveness realized by mass production.

Applications

Water well drilling, geothermal well drilling, foundation piling, geological prospecting, etc.

Structure

Structure

	01 – Drill Pipe	02 – Guide Sleeve	03 – Steel Casing
	04 – DTH Hammer	05 – Guide Device	06 – Casing Shoe
	07 – Reammer	08 – Pilot Bit	09- Guide Device
	10 – Casing Shoe	11 – Reammer	12 – Pilot bit

GSE-EDS82 Eccentric Drilling System (ODEX82)

GSE-EDS90 Eccentric Drilling System (ODEX90)

GSE-EDS115A Eccentric Drilling System (ODEX115A)

GSE-EDS115B Eccentric Drilling System (ODEX115B)

GSE-EDS140 Eccentric Drilling System (ODEX140)

GSE-EDS145 Eccentric Drilling System (ODEX145)

GSE-EDS147 Eccentric Drilling System (ODEX147)

GSE-EDS165 Eccentric Drilling System (ODEX165)

GSE-EDS180 Eccentric Drilling System (ODEX180)

GSE-EDS190 Eccentric Drilling System (ODEX190)

GSE-EDS230 Eccentric Drilling System (ODEX230)

GSE-EDS240 Eccentric Drilling System (ODEX240)

Retrac button bits are mainly used in loose rock mass with relatively broken rock. The retrac skirt design can assist in retrieving the drill tool, reduce the phenomenon of bit stuck and buried, and help improve the straightness of the borehole.

As a China retrac button bit supplier, we can provide you with high-quality button bit includes retrac rock drill bits, such as R25 retract button bit, R28 retract button bit, R32 retrac button bit, R35 retrac button bit, R38 retrac button bit, T38 retract drill bit, T45 retract drill bit, T51 retract drill bit, GT60 retract button bit, ST58 retrac button bit, ST68 retrac button bit, SR35 retrac drill bit and other types of rock drill bit.

R25

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	41	1 5/8″	5 × 9	2 × 8	2	1	0.78	R25-417YFP
	45	1 3/4″	6 × 9	3 × 8	1	3	1	R25-459YFP
	48	1 7/8″	6 × 10	3 × 9	1	3	1.1	R25-489YFP
	51	2″	6 × 10	3 × 9	–	3	1.35	R25-519YFP
	55	2 11/64″	6 × 11	3 × 9	1	3	1.54	R25-559YFP
	57	2 1/4″	6 × 10	3 × 10	–	3	1.6	R25-579YFP
	64	2 1/2″	8 × 11	4 × 10	1	2	2.2	R25-6412YFP

R28

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	45	1 3/4″	6 × 9	3 × 8	1	3	1	R28-459YFP
	51	2″	6 × 10	3 × 9	1	3	1.35	R28-519YFP

R32

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	45	1 3/4″	6 × 9	3 × 8	1	3	0.9	R32-459YFP
	48	1 7/8″	6 × 10	3 × 9	1	3	1.1	R32-489YFP
	51	2″	6 × 10	3 × 9	–	3	1.2	R32-519YFP
	57	2 1/4″	6 × 10	3 × 10	–	3	1.7	R32-579YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	2.2	R32-649YFP
	60	2 23/64″	8 × 10	4 × 9	1	2	1.7	R32-6012YFP
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	R32-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	R32-7612YFP
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.3	R32-7613YFA

SR35

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	51	2″	8 × 9	3 × 9	2	1	1.6	SR35-5111YFP
	54	2 1/8″	8 × 9	3 × 9	2	1	1.8	SR35-5411YFP
	54	2 1/8″	6 × 10	3 × 9	1	3	1.3	SR35-549YFA

R38

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	R38-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	R38-7612YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	1.9	R38-649YFP
	64	2 1/2″	6 × 11	3 × 10, 1 × 9	1	2	1.9	R38-6410YFA
	64	2 1/2″	8 × 10	4 × 10, 1 × 9	1	4	1.9	R38-6413YFA
	66	2 19/32″	6 × 11	3 × 10, 1 × 9	1	2	1.9	R38-6610YFA
	70	2 3/4″	8 × 10	4 × 10, 1 × 9	1	4	2.4	R38-7013YFA
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.3	R38-7613YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.3	R38-8914YFA
	89	3 1/2″	8 × 12	4 × 11, 1 × 11	1	4	5.3	R38-8913YFA

T38

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	64	2 1/2″	8 × 10	4 × 10	2	2	1.9	T38-6412YFP
	76	3″	8 × 12	4 × 11	2	2	2.2	T38-7612YFP
	64	2 1/2″	6 × 11	3 × 10	1	2	1.9	T38-649YFP
	64	2 1/2″	6 × 11	3 × 10, 1 × 9	1	2	1.9	T38-6410YFA
	64	2 1/2″	8 × 10	4 × 10, 1 × 9	1	4	1.9	T38-6413YFA
	70	2 3/4″	8 × 10	4 × 10, 1 × 9	1	4	2.4	T38-7013YFA
	65	2 9/16″	6 × 12	4 × 10	1	2	3.1	T38-6510YSP

T45

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	76	3″	8 × 12	4 × 11	2	2	2.2	T45-7612YFP
	89	3 1/2″	8 × 13	5 × 12	2	2	5.2	T45-8913YFP
	102	4″	9 × 12	6 × 12	–	3	6.5	T45-10215YFP
	115	4 1/2″	9 × 14	7 × 13	–	3	10	T45-11516YFP
	115	4 1/2″	9 × 14	6 × 13	–	3	10	T45-11515YFP
	76	3″	8 × 11	4 × 11, 1 × 11	–	4	3.2	T45-7613YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.4	T45-8914YFA
	102	4″	8 × 12	4 × 12, 3 × 12	–	4	7.8	T45-10215YFA
	102	4″	8 × 13	4 × 12, 4 × 12	–	4	7.8	T45-10216YFA
	115	4 1/2″	8 × 14	4 × 13, 3 × 12	–	4	7.8	T45-11515YFA
	76	3″	8 × 13	4 × 11, 1 × 11	1	4	3.5	T45-7613YSA
	89	3 1/2″	8 × 12	4 × 12, 1 × 12	1	4	4.7	T45-8913YSA

T51

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	89	3 1/2″	8 × 13	5 × 12	2	2	4.6	T51-8913YFP
	102	4″	8 × 14	7 × 12	1	2	7.1	T51-10215YFP
	102	4″	9 × 12	6 × 12	–	3	7.1	T51-10215YFP1
	115	4 1/2″	9 × 14	7 × 13	–	3	10	T51-11516YFP
	115	4 1/2″	9 × 14	6 × 13	–	3	10	T51-11515YFP
	127	5″	9 × 14	7 × 13	–	3	13	T51-12716YFP
	89	3 1/2″	8 × 12	4 × 11, 1 × 11	1	4	5.3	T51-8913YFA
	89	3 1/2″	8 × 12	4 × 12, 2 × 10	1	4	5.4	T51-8914YFA
	102	4″	8 × 12	4 × 12, 3 × 12	–	4	7.8	T51-10215YFA
	102	4″	8 × 13	4 × 12, 4 × 12	–	4	7.8	T51-10216YFA
	115	4 1/2″	8 × 14	4 × 13, 3 × 12	–	4	7.8	T51-11515YFA
	115	4 1/2″	8 × 14	4 × 14, 3 × 12	–	4	7.8	T51-11515YFA1
	115	4 1/2″	8 × 14	4 × 14, 4 × 12	–	4	10	T51-11516YFA
	89	3 1/2″	9 × 11	3 × 11, 2 × 10	1	3	4.8	T51-8914YFA2
	102	4″	9 × 12	3 × 12, 3 × 11	1	3	6.9	T51-10215YFA1
	110	4 21/64″	9 × 14	6 × 12, 2 × 11	–	3	10	T51-11017YFA
	127	5″	8 × 16	4 × 14, 4 × 14	–	4	13.5	T51-12716YFA
	102	4″	8 × 14	4 × 13, 1 × 13	–	2	10.1	T51-10213YSA
	115	4 1/2″	9 × 14	6 × 12, 4 × 12	–	3	9.45	T51-11519YSA

GT60

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	92	3 5/8″	9 × 12	9 × 12	–	2	5.1	GT60-9218YSP
	96	3 25/32″	9 × 12	9 × 12	–	2	6.5	GT60-9618YSP
	102	4″	9 × 13	10 × 12	–	2	8.5	GT60-10219YSP
	115	4 1/2″	9 × 14	10 × 12	–	3	10.8	GT60-11519YSP
	127	5″	9 × 16	10 × 14	–	3	15	GT60-12719YSP
	140	5 1/2″	9 × 16	10 × 14	–	3	15	GT60-14019YSP
	152	6″	9 × 16	12 × 16	–	3	20	GT60-15221YSP
	115	4 1/2″	9 × 16	6 × 13	–	3	15	GT60-11515YSP

ST58

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	89	3 1/2″	10 × 12	4 × 12, 2 × 12	–	4	5	ST58-8916YSA
	115	4 1/2″	10 × 14	4 × 14, 4 × 14	–	4	10	ST58-11518YSA

ST68

Appearance	Diameter		Buttons		Flushing Hole		Weight	Model No.
	[mm]	[in]	Gauge [No.] × [mm]	Front [No.] × [mm]	Side [No.]	Front [No.]	[kg]
	102	4″	10 × 12	4 × 12, 4 × 12	–	4	9.3	ST68-10218YSA
	115	4 1/2″	10 × 14	4 × 14, 4 × 14	–	4	10	ST68-11518YSA

Y018 hand held pneumatic Jack Hammer Air Leg concrete rock drill

Hand-held Rock Drill is widely used for dry drilling in the medium-hard and hard rock. It is widely used in metallurgy, coal,railway, transportation, water conservancy construction and national defense stone works, etc. It is suitable for drilling andblasting under various of rocks at any direction angles.

Yo18 Hand held rock drill

Advantage

1. Higher efficiency and reliability.
2. Lower noise and Lighter weight.
3. Stronger impact frequency.
4. Longer life of wearing parts.
5. Environment protection.
6. Wet drilling and easy cleaning air/ water holes.
7. Safe and easy to operate.

Yo18 Hand held rock drill Tapered drill rod

Tapered drill rod,another name called taper rod, tapered drill steels, This provides a hexagonal chuck section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain the proper shank striking face position in the rock drill, and a tapered bit end. Tapered steel lengths available from 0.6 mto 3.6 m in length—are measured from the collar to the bit end 

Specifications

YT28（Air-leg）rock drill product features

1、The height of the machine is moderate and the range of the stroke is large, so it can drill the anchor holes which are perpendicular to the roof surface, which solves the problem that the anchor holes in the roadway are not perpendicular to the surface of the roof for a long time, which guarantees the quality and progress of the project, saves the construction cost and improves the efficiency.
2、Good comprehensive rock drilling performance, not only for medium hard rock drilling, but also for rock drilling with f≤6, which can be applied to both rock roadway and quasi roadway.
3、Simple structure and more durable, easy to maintain, lower maintenance cost
4、Flexible start, air and water linkage, air leg fast return, air pressure adjustment and other institutions.
5、The control handle is concentrated with the shank body, the mechanism is novel and convenient to operate with the muffler cover can effectively reduce the noise and change the direction of the row of visits at will to improve the site The operation conditions of the field
6、YT28 rock drill is suitable for wet rock drilling of medium hard or hard rock.

Application

Tunneling and support in mining, transportation, water conservancy, hydropower and other projects. It is mainly used for quarries – dividing rocks.

Specifications

YN27C INTERNAL COMBUSTION ROCK DRILL

YN27C type internal combustion rock drill is widely used in mining, road construction, quarrying, national defense engineering, etc., with various functions of splitting, crushing, tamping and chipping for mining, cement road surface and asphalt road surface.

Handheld YN27C internal combustion rock drill Save time and effort and chisel fast

YN27C internal combustion rock drill has the functions of drilling, splitting, crushing, ramming, shoveling and so on. It can drill holesin rock vertically down, horizontally down to less than 45° and vertically down to the deepest 6 meters. YN27C is widely used in mining, road construction, quarrying, national defense engineering, etc.

• The machine is easy to operate, more time saving, labor savinS, with fast chisel speed, high efficiency.
• At present, the machine naseached the first-class level of similar products, and the parts ointernational similar products can be completely inter chang eable.
• The machine is portable, with anti-skid handle, make the work more safe and efficient.

Specifications

Introduction to yt24 air leg rock drill machine

1.YT24 is suitable for drilling horizontal or tiptilted blasthole in solid hard rocks as well as vertical bolt holes on the roof.

2.YT24 can be used with the air leg FT140B, FT140BD. It is also installed on drill rig or drill frame; meanwhile, we provide a transparent lubricator FY200B to observe the oil level and adjust the oil quantity in order to make sure a favorable lubrication.

3. It is the indispensable tool in mining, railway, transportation, water conservancy construction and earthwork projects.

Specifications

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