• 311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch
  • 311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch
311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch

311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch

Product Details:

Place of Origin: china
Brand Name: chuanzuan
Certification: CE, ISO
Model Number: IADC 517

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Negotiable
Packaging Details: Plywood box
Delivery Time: 1-8 days
Supply Ability: 100
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Detail Information

Size: 12 1/4 Inch Tci Tricone Bit IADC Code: 517
Connection: 6 5/8"API Reg Pin Nozzle Qty: 3NZ
Make Up Torque(KN.m): 16.3~21.7 Rotary Speed(rpm): 110~40
Bearing Type: Sealed Or Non-sealed Bearing Machine Type: Water Well Drilling
Color: As Required
High Light:

tricone drill bit


tungsten carbide insert bit

Product Description


311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch For Hard Gypsum / Marble

311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch 0 Basical Parameter
Bit Size  12 1/4"(311.1MM)
IADC Code 517
Connection 6 5/8"API reg pin
Nozzle Qty 3NZ
Make up Torque(KN.m) 16.3~21.7
Operating Parameter
Rotary Speed(rpm) 110~40
Weight on Bit(KN/MM) 0.5~1.05
Formation Low compressive strength,medium hard formation with dard abrasive interlayer,like Hard shale,anhydrite,soft limestone,sandstone,dolomite with mezzanine,etc.

Cutting Structure
The wear-resistance of the teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for the steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit

Gauge Structure
Multiple gague protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capacity and bearing life.
Bearing Structure
High precision journal bearing with two thrust faces,Balls lock the cone.Hardfaced head bearing surface.Cone bearing inlaid with friction-reducing alloy and then silver-plated.Abrasion resistance and seizure of the bearing are improved.and suitable for high rotary speed

Seal and Lubrication
The advanced metal seal package consists of two metal seals and two elastic energizers.Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force,and achieves the bearing seal.In the drilling,metal seals are relatively dynamic,and the energizers are static.This will improve the reliability and durability of bearing seal.The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch 1311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch 2311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch 3311.1MM IADC 517 TCI Tricone Bit 12 1/4 Inch 4




Our Services


1 We supply good quality goods at competitive price

2 We not only have our own design but also accept customization

3 Fast and on time delivery

4 Every bit has it's quality assurance

5 Contact us anytime if you have any question with bits.

6 24 hours on time reply


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As a manufacturer loacted in Hejian City, Hebei Province, China, we have been in this industry for more than 20 years.

We have many clients from all over the world and we serve our clients with not only reasonable price, but also reliable quality. We cherish every client and we're thankful for our clients' trust. So please believe us, we will supply you with the most genuine goods.


1 Q: Are you manufacturer?

A: Yes and we have been manufacturing drill bits for more than 20 years.

2 Q: Where are you located in?

A: We are located in Hejian City Cangzhou City Hebei China

3 Q:What's your main product?

A: Our main products include TCI tricone bit, Steel tooth tricone bit, sigle cone bit, HDD HOLE OPPENER and so on. For some products such as drag bits, we can also produce as per your demand.

4 Q: What's your MOQ?

A: Our MOQ is 5 pieces, but if you just want one sample for testing quality, it's also acceptable for us.

5 Q: What's the lead time?

A: We will delivery goods within 7 days if we have goods in stock; for other circumstances, we will negotiate with you.

6 Q: Do you sell used drill bit ?

A: Yes we do and price is very competitive. Welcome to inquire anytime.

For more information, please feel free to contact us.


Contact Us

12 1/4 311.1mm  tci tricone roller rock bit/ with factory price 6



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