Four-Wing Concave PDC Drag Bit - Drilling Bits - Chenghui...

Four-Wing Concave PDC Drag Bit

Name: Four-Wing Concave PDC Drag Bit
Brand: Chenghui Drilling Tools

Size: 75–325 mm
Application: Water Well / Anchor / Grouting / Geothermal
Formation: Soft to Medium-Hard Rock
Structure: Four-Wing Concave
PDC Cutter: 1308 / 1304 Combination
Customization: Diameter / Thread / Cutter Layout / Reinforced Design

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Description

Product Snapshot

Four-Wing Concave PDC Drag Bit for Non-Coring Drilling

Four-Wing Concave PDC Drag Bits are manufactured for non-coring drilling in water well, anchor, grouting, geothermal and construction applications. Compared with three-wing designs, the four-wing structure provides additional cutting contact and improved load distribution, helping maintain stable drilling performance and borehole direction.

The concave cutting face and optimized PDC cutter arrangement provide efficient rock breaking and reliable wear resistance in suitable formations.

Size 75–325 mm	Cutting Structure 4-Wing Concave + PDC	Formation Soft to Medium-Hard
Primary Application Water Well / Anchor / Grouting / Geothermal	Thread Options 42 / 50 / 76 / 89 Female Thread	Customization Diameter / Cutter Layout / Thread / OEM

Key Features

Higher stability, improved load distribution

Six design advantages behind the Four-Wing Concave PDC Drag Bit.

01 / 06

Four-Wing Balanced Structure

The four-wing layout provides improved load distribution and stable guidance during drilling.

02 / 06

Concave Cutting Face

The concave profile supports efficient cutting and helps maintain stable borehole direction.

03 / 06

High Cutting Stability

More cutting contact points help reduce vibration and improve drilling consistency.

04 / 06

PDC Cutter Combination

Different 1308 and 1304 cutter combinations can be selected according to bit size and formation conditions.

05 / 06

Wide Size Range

Available from 75 mm to 325 mm for different drilling requirements.

06 / 06

Custom Thread Connections

Different thread connections can be manufactured according to drill rods and drilling rigs.

Applications & Formations

Used across water well, anchor and construction drilling

This four-wing PDC drag bit is suitable for water well drilling, anchor drilling, grouting holes and geothermal drilling. Other applications include slope support drilling, foundation support, coal mine drilling, gas drainage holes and engineering construction drilling.

01 Water Well Drilling Fast penetration for efficient borehole advance in water well projects.	02 Anchor Drilling Stable guidance and balanced cutting for anchor and slope support drilling.
03 Grouting Holes Reliable hole formation for grouting and foundation support operations.	04 Geothermal Drilling Efficient penetration for geothermal borehole and energy construction projects.

Suitable Rock Formations

Suitable for soft to medium-hard and relatively intact formations. Reinforced cutter configurations are available for more demanding or moderately abrasive formations.

Red Sandstone	Mudstone	Coal Seams	Backfill	Limestone
Dolomite	Weathered Rock	Other Similar Formations

⚠️ Note: Actual drilling performance depends on rock hardness, abrasiveness, fractures, drilling parameters, cutter selection and operating conditions.

PDC Cutter Configuration

1308 and 1304 cutter combinations

Different PDC cutter combinations are available according to diameter and drilling conditions.

1308 Cutters Main Cutting Elements Used as the main cutting elements to provide efficient penetration and wear resistance.	1304 Cutters Auxiliary & Gauge Cutters Used as auxiliary or gauge-support cutters to improve edge protection and drilling stability.
Reinforced Reinforced Configuration Additional cutters or reinforced layouts can be selected for larger diameters and more demanding formations.

Technical Specifications

Standard sizes and cutter configurations

Available from 75 mm to 325 mm. Cutter quantity, cutter layout and thread connection can be customized.

Bit Size	Typical Thread Options	PDC Cutter Configuration	Approx. Weight
75 mm	42 / 50 Female Thread	8 PCS / 1308 + 2 PCS / 1304	1.8 kg
91 mm	42 / 50 Female Thread	Customized	—
113 mm	42 / 50 Female Thread	12 PCS / 1308 + 3 PCS / 1304	4.4 kg
133 mm	42 / 50 / 76 Female Thread	12 PCS / 1308 + 3 PCS / 1304	5.0 kg
153 mm	42 / 50 / 76 Female Thread	16 PCS / 1308 + 2 PCS / 1304	7.0 kg
171 mm	50 / 76 / 89 Female Thread	20 PCS / 1308 + 2 PCS / 1304	—
200 mm	50 / 76 / 89 Female Thread	20 PCS / 1308 + 3 PCS / 1304	9.2 kg
220 mm	50 / 76 / 89 Female Thread	24 PCS / 1308 + 3 PCS / 1304	11.2 kg
245 mm	76 / 89 Female Thread	28 PCS / 1308 + 3 PCS / 1304	14.6 kg
275 mm	76 / 89 Female Thread	32 PCS / 1308 + 3 PCS / 1304	16.3 kg
325 mm	76 / 89 Female Thread	Customized	Customized

Note: 91 mm and 171 mm are available with customized cutter configurations. 325 mm and larger sizes are available on a customized basis.

Four-Wing vs Three-Wing

Which PDC drag bit should you choose?

Four-wing and three-wing PDC drag bits are designed for different drilling priorities. The final design should be selected according to bit diameter, rock formation, drilling rig and required penetration rate.

Four-Wing

Four-Wing Design

Best suited for:

—	Higher drilling stability
—	Better load distribution
—	Larger bit diameters
—	Projects requiring smoother borehole guidance

Three-Wing

Three-Wing Design

Best suited for:

—	Faster penetration in suitable formations
—	Lighter drilling structure
—	General water well and anchor drilling

⚠️ Note: The final design should be selected according to bit diameter, rock formation, drilling rig and required penetration rate.

How to Select

How to select the right four-wing PDC drag bit

To recommend a suitable configuration, please provide the following information. Our engineers will respond with a factory quotation within 24 hours.

01 Required Diameter 75 / 91 / 113 / 133 / 153 / 171 / 200 / 220 / 245 / 275 / 325 mm	02 Rock Formation Sandstone / Mudstone / Limestone / Coal / Backfill	03 Drilling Application Water well / Anchor / Grouting / Geothermal / Mining
04 Thread Connection 42 / 50 / 76 / 89 or customized	05 Drilling Rig or Drill Rod Information Please provide drilling rig model or drill rod specification for thread matching.

Factory Customization

OEM & ODM customization for drilling projects

Every drilling project is different. Chenghui Drilling customizes each bit based on your project data — from cutter layout to thread connection.

Rock formation, drilling rig, drill rod and drilling parameters all affect drill bit performance. Our engineering team works with your technical data to recommend the most suitable cutter layout and thread connection.

— Diameter	— Cutter Quantity
— Cutter Layout	— Thread Connection
— OEM Logo	— Packaging

Four-wing PDC drag bit welding and assembly process

About Chenghui Drilling

Professional drilling tools manufacturer in China

Chenghui Drilling Co., Ltd. specializes in the design, production and supply of PDC drill bits, tricone drill bits, DTH drilling tools and related drilling equipment for customers worldwide.

Every drill bit is manufactured and inspected in our own factory, ensuring stable quality, competitive pricing and reliable delivery for international drilling contractors and distributors.

Supply Mode Factory Direct	Manufacturing In-House
Service OEM / ODM	Market Global Export

Chenghui Drilling Tools production workshop

Get In Touch

Need a customized Four-Wing PDC Drag Bit?

Share your drilling requirements with our engineers. We will recommend a suitable cutter layout and thread connection, and provide a factory quotation within 24 hours.

1. Required Diameter	2. Rock Formation
3. Drilling Application	4. Thread Connection

📩 Request Quote
Contact Engineer

FAQ

1
What is a Four-Wing Concave PDC Drag Bit?
+

A Four-Wing Concave PDC Drag Bit is a non-coring drill bit designed for stable drilling and efficient rock cutting. The four-wing structure improves load distribution, while the concave cutting face helps maintain borehole stability and consistent penetration.

2
What applications is this PDC drag bit suitable for?
+

It is commonly used for water well drilling, anchor drilling, grouting holes, geothermal drilling, slope support, foundation support, coal mine drilling and engineering construction.

3
What rock formations are suitable?
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This bit is suitable for soft to medium-hard and relatively intact formations, including red sandstone, mudstone, coal seams, backfill, limestone, dolomite and weathered rock. Reinforced cutter configurations can be selected for more demanding formations.

4
What sizes and thread connections are available?
+

Standard diameters range from 75 mm to 275 mm. Common thread options include 42, 50, 76 and 89 female threads, and customized connections are available according to your drill rod or drilling rig.

5
Can you customize the PDC cutter configuration?
+

Yes. We can customize bit diameter, PDC cutter quantity, cutter arrangement, concave profile, thread connection, gauge protection and reinforced structure according to your drilling application and rock formation.

Downloads

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CNC-Machining-Center.pdf	Download

Four-Wing Concave PDC Drag Bit