Down-the-hole drilling tools roller cone cutters

Down-the-hole Drilling Tools roller cone cutters for core barrel pilot bit pilling drill

Our drill bit can be used for 150-300 hours.Soft formations will last longer
1.Hardfaced head bearing surface,inner hole of cone is silver-plated.Thelosd capacity and seizure resistance of the bearing is greatly improved
2.Adopt the optimum design of high strength and high toughness hard alloy tooth arrangement, tooth number, tooth opening height and unique alloy tooth shape, give full play to insert bit high wear resistance and excellent cutting ability
3.Heat treatment improves the toughness of the steel and the service life of the tooth palm
4.Use the wear-resistant and high-temperature rubber high saturated nitrile butadiene rubber, increase the section area of sealing ring reduce sealing pressure And you can customize it
5.Sliding bearings and rolling bearings are available
6.All rubber compensator is uesd which can limit pressure differential and prevent drilling fluid from entering the lubrication system and this provides the bearing system with good assurance of lubrication

Parameters		Application Formations
Drill bit type	GRT-537 8 1/2``	Compression strength 90-110 MPa, medium hard formation such as sand stone, slate, shale, limstone ect.
IADC code	537
Carbide QTY on cone	cone 1: 42pieces	Main technical feature
	cone 2: 43pieces	There are Cone 1 & cone 2 & cone3, wedge cutters design resulted a high drilling efficiency in recommend formations. The roller cone is traditional tricone bit legs, increased carbide quantity on the dorsal metacarpal can protect leg back from damage by debris efficiently.
	cone 3: 40pieces
Carbide QTY on Leg	21 pieces

Replaceable Roller cone cutters mainly used for Rock Reamers and Core barrel .

(1) Available in sizes from 9 1/2" to 54". Any sizes available upon request.

(2) HDD provides 400mm-2000mm replaceable cutter rock reamer.

(3) Replaceable Cutter rock reamer is designed for big rig and big hole drilling ,fit for all sorts of rock formation. All cutters bearing is metal sealed.

(4) Big size of cutter make it longer using time life.

(5) The cone units of Great Roller cone cutters are replaceable and each main body of the hole openers can be used many times,thus saving the cost for the customer.

Our Advangates
1. Two manufactures: New manufacture with 40,000 square meters in Hebei Province ,very near to Beijing , and build our own R&D Exchange Center in Beijing.
2. Goverment give us a High-tech Firm Authories Certification,we got API Spec7-1 Quality Control Standard. ISO9001:2008 Quality Management System. ISO14001:2004 Environment Management System.
3. DMG and Mazark machines manufacture with high precision .
4. Strong designs , engineers , production, sales and after sales service team.
5. OEM&ODM service.

Contact us if you need more details on Drilling Tools for Pilot Bit. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Drilling Tools Roller Cone Cutter、Core Pilot Bit Pilling Drill. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Roller Cone Cutters > 120 ° U-shaped Cone Cutter