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Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits

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Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits
Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits

Large Image :  Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits

Product Details:
Place of Origin: China
Brand Name: SOLLROC
Certification: SGS
Model Number: SD8
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece
Price: negotiable
Packaging Details: Cartons + ply wood case (no plastic)
Delivery Time: 18 working days
Payment Terms: T/T,
Supply Ability: 10000 pieces/month

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits

Description
Application: Quarrying, Construction, Civil Engineering, Mining, Usage: Mining, Water Well Drilling, Geothermal Drilling
Product Name: SD8 DTH Bit Rock Formation: Granite, Limestone, Quartz, Etc
Shank: SD8 Advantage: Hign Abrasion Resistance
Color: Black Or As Request Size: 8 1/2''
Bit Diameter: 216mm Rock Hardness: Granite, Limestone, Quartz, Etc
Machine Type: Drilling Tool,Drilling Equipment,Downhole Tools,Mining Machine Parts Use: Well Drilling,Ore Mining,Coal Mining,Coal/Ore Mining,quarry
High Light:

8 1/2'' DTH Drill Bits

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Diameter 216mm DTH Drill Bits

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Concave Face dth hammer bits

Concave Face 216mm 8 1/2'' Black Color DTH Drill Bit For Mining

 

Product description

Penetraton rates with down-the-hole hammers are directly proportional to air pressure and, therefore, increasing the pressure will increase the drilling speed. Modern valveless hammers are products of precision engineering and are of a strong robustdesign with few internal parts making them economically attractive and easy to service. Air pressure is applied alternatively to both ends of the hammer piston by means of a system of ports and channels in the piston and cylinder to change the direction of the air. The valveless hammer operating cycle is described in the previous pages. DTH hammers are primarily percussion tools and penetrate more by shattering materials than by tearing it. The same air which passes through the hammer causing the piston to reciprocateand strike the bit also serves to expel cuttings from the bore hole and therefore maximumutilisation of the air is achieved.

 

SD8 216mm 8 1/2'' DTH Drill Bit overview

Bit Diameter    216mm 8 1/2''
No.* Button Dia. mm     Gauge Buttons    10*18mm
    Front Buttons      8*18mm + 6*16mm
Weight (kg)     51.2

 

SD8 series DTH bit overview

Diameter Button Configure Dia*qty. Bit design

Weight

(kg)

Metric Inch Guage button Front button
203mm 8'' 18mm*10 18mm*8+16mm*5 Concave face 40.1
216mm 8 1/2'' 18mm*10 18mm*8+16mm*6 Concave face 44.3
219mm 8 5/8'' 18mm*10 18mm*8+16mm*6 Concave face 44.8
229mm 9'' 18mm*12 16mm*12+16mm*7 Concave face 46.4
235mm

9 1/4''

18mm*12 16mm*12+16mm*7 Concave face 47.4
245mm  9 5/8'' 19mm*12 16mm*12+16mm*8 Concave face     51.5


Product Advantages

1.  1. High grade tungsten carbide inserts

2. Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
3.Multiple shank and face designs Various face and spline configurations
4.Perfect after-sales service. Free replacement is provided if there is quality problem with our products..

 

Face shape Features

Concave Face

1. Capable of drilling straighter holes in medium to hard rock which is broken or less consolidated

2. Offers high penetration rate in the above stated rock conditions

3. Has excellent air flushing characteristics

4. Predominant face style for majority of drilling conditions

Flat Face

1. Have a superior performance in hard, abrasive and broken rock conditions

2. They however have a slower penetration rate in comparison to a concave face bit

Convex Face

1. This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc

2. They are recognized for having excellent capability for drilling into moderately consolidated rock conditions

 

Structure picture

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits 0

 

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits 1

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits 2

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits 3

Product application

At present, DTH drilling tool is widely used in underground mining, quarries, hydraulic and Hydro-Power Engineering, water well drilling, Mineral exploration, anchoring hole drilling, geothermal engineering, Subway excavation, another civil engineering.

DTH is one of the most efficient ways of drilling rock, using a rapid hammer action to break the rock into sizeable chips which are then evacuated from the bore hole by the air exhausted from the DTH Hammer. The technique provides fast drilling of accurately aligned, straight and clean holes in most ground conditions.

Concave Face Diameter 216mm 8 1/2'' DTH Drill Bits 4
 

Company informaiton

1. Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.

2. We have advanced technology and equipment.

3. Our technician has more than 13 year's professional working experience.

Contact Details
Changsha Sollroc Engineering Equipments Co., Ltd

Contact Person: Serena Gong

Tel: +8613055195409

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