Concentric Wing System Overburden Drilling Bit Concentric Wing Bit Symmetric Wing Bit

• Customization: Available
• After-sales Service: One Year
• Warranty: One Year
• Model NO.: WOD178
• Certification: ISO 9001:2008
• Standard: AISI, ASTM
• Surface Treatment: Polishing
• Manufacturing Process: Forging
• Material: Tungsten Carbide
• Bit Shank: DHD,SD,Ql,Mission,Mach,Numa
• Suitable Hammer Model: 3"-18" Hammer
• Application Casing: Steel Pipe
• Applied: Drifting&Tunneling&Mining, Blasting
• Transport Package: Wooden Box
• Specification: 5-12mm
• Trademark: STAROCKDRILL
• Origin: China
• Production Capacity: 20000sets/Month

Product Description

Overburden System Symmetric Drilling Tools Symmetrix Casing Overburden wing Drilling System Symmetric wing bit

At Starockdrill, we believe in challenging conventional practices to deliver groundbreaking solutions. After three years of relentless dedication, we have developed a remarkable drilling tool - the concentric casing system with three jaws.

Specification

 

Features

1.Enhanced Durability: We employ strengthened surface treatment on our components, ensuring prolonged tool lifespan and exceptional wear resistance.

2.Easy Maintenance: Our product is designed for effortless disassembly, allowing convenient replacement of the winged expansion blocks.

3.Rapid and Stable Drilling: The drilling speed of our system is accelerated, while maintaining stability and minimizing the risk of jamming.

Product Introduction

Our concentric casing system with wings boasts a unique design that enables downward pressure and clockwise rotation at the start of rock chipping. This initiates the rotation of the winged expansion block along the rotational axis, facilitating casing advancement while expanding the hole. This cutting-edge system ensures synchronized drilling and casing operations, making it an ideal choice for geothermal wells, water wells, small-to-medium-sized grouting holes, micro-piling, and more.

Trusted by global drilling contractors and customers who looking for high quality drilling tools for their drilling rigs and rock drilling machines, we would be honored to have the opportunity to earn your trust and provide you with rock drilling products that meet your application needs.

Application scenarios

The versatility of our Threaded Drill Bits makes them widely applicable across various industries, including open-pit mining, underground mining, tunneling, anchoring projects, blast furnace tapping, tunnel construction, hydroelectric projects, quarrying, and various other construction projects.andling, land preparation

Technical Specifications

(Custom configurations available upon request.)

Model	Casing OD:(MM)	Casing ID:(MM)	Reamer(MM)	Casin Shoe ID(MM)	No. Wings	Hammer	Drill Rod(MM)
WOD168	168	148	180	138	2	5 INCH HAMMER	76/89
WOD178	178	158	190	148	2	5 INCH HAMMER	76/89
WOD183	183	163	195	152	2	5 INCH HAMMER	76/89
WOD194	194	174	210	160	2	6 INCH HAMMER	89/114
WOD219	219	199	237	187	2	6 INCH HAMMER	89/114
WOD245	245	225	265	211	2	8 INCH HAMMER	114
WOD273	273	253	308	236	2	8 INCH HAMMER	114/127
WOD323	323	303	360	282	3	10 INCH HAMMER	114/127
WOD406	406	387	432	365	3	12 INCH HAMMER	127/140
WOD508	508	483	530	460	3	14 INCH HAMMER	127/140
WOD610	610	584	635	560	3	18 INCH HAMMER	140

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

Packaging & Shipping

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

HENAN STAROCKDRILL EQUIPMENT CO., LTD

Welcome to Starockdrill, a specialist manufacturer of rock drilling tools. Since our establishment in 2008, Henan Starockdrill Equipment Co., Ltd. has been committed to the research, development, and production of rock drilling tools. Our mission is to provide customers with high-quality, efficient, and reliable drilling tools and solutions, helping them enhance productivity, reduce costs, and create more value.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

Threaded Drill Rods
Coupling Sleeves
Shank Adapters
Eccentric Casing System
Double Casing Drilling System

Certifications

Project Case

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.