190MM Roller Cone Bit 7 1/2inch Roller Cone Cutter Bit With 3NZ
|Bit Size||7 1/2"(200MM)|
|Connection||4 1/2"API reg pin|
|Make up Torque(KN.m)||16.3~21.7|
|Weight on Bit(KN/MM)||0.5~1.2|
|Formation||Hard formation with high compressive strength ,such as
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
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.
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
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
Hebei Yichuan Drilling Equipment Manufacturing Co., Ltd has more than 20 years of experience in manufacturing and design.
We specialize in researching and production of TCI Tricone Bit,
Steel Tooth tricone bit, PDC bit, Drag bit, HDD hole opener,
Tricone bit cutter and Drilling Accessories. Application fields
include oil well drilling, gas well drilling, geothermal well
drilling, mining, geological survey, hydrographic survey, water
well drilling, HDD pipelinesprojects, foundation projects.
Our goal is to provide the best quality products and service to our
customers. We have professional R&D team, advanced equipment
and precision instruments. Reduce the cost, Speed the drilling,
guarantee the safety is always our aim.
Win-win cooperation is our ultimate pursuit. Contact us anytime if
you are looking for a drill bit manufacturer.
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
First of all we want you to know that we are 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
1 Q: Are you manufacturer?
A: Yes and we have been manufacturing drill bits for more than 20
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.