air circulation for mining drilling 7 7/8'' tricone tci bit

FOB Reference Price:Get Latest Price
$1,000.00 - $1,500.00 / Piece | 1 Piece/Pieces (Min. Order)
Model Number:
Support Sea freight
Lead Time:
Quantity(Pieces) 1 - 20 >20
Est. Time(days) 15 Negotiable
Report Suspicious Activity
Quick Details
Place of Origin:
Hebei, China
Brand Name:
Drill Bit
Machine Type:
Drilling Tool
Carbon Steel
Processing Type:
Well Drilling
Metal Sealed
Pin Size:
API 4 1/2''reg
7 7/8"=200mm
Work Time:
Above 100 Hours
High Performance
soft to medium Formation
Oil & Gas ,Water Well Drilling
wooden box
Supply Ability
Supply Ability:
300 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
7 7/8'' tricone tci bit will shipped by standard export packing
Tianjin Port
Lead Time :
Quantity(Pieces) 1 - 20 >20
Est. Time(days) 15 To be negotiated
Product Description


Specifications About 7 7/8'' tricone tci bit


1. Roller bits for Mining and Rock Drilling

The strength and wear resistance of inserts are improved
1. Roller bits for Mining and Rock Drilling
The strength and wear resistance of inserts are improve by using carbide inserts with high 

strength and high wear resistance.
Surface of the high precision bearing heat treated by using advanced heat treatment process to 

improve the load capacity and service life of the bearing.
The service life of the bearing is further extended by adopting harder and mort wear resistant 

material for thrust bearing.
Preventing reflux structure has dual function, it can avoid air counterflow and dust entering into 

bearing when the air-compressor stop working accidentally, and separate air and water 

in order to avoid water entering into bearing when it works normally to prolong the life of bearing.


2. Roller bits for Oil Drilling

1. This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves 

recessed in the cone body, the size of the bearing journal is increased.
2. Thrust bearing surfaces are hardfaced and treated with friction reducing technology.
3. Ball locked cone, suitable for high rotary speed.


3.Steel teeth Tricone bits
1 This series tricone bit use Journal bearing. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the 

bearing is greatly improved.
2. O ring seal is made of the more wear resistance high saturated buna-N with the increased 

seal section and precisely designed sealing flange in the cone sealing area increased the 

reliability of the seal.
3. The bit bearing can be ball locked
4. For steel tooth bit, the tooth surface is hardfaced with new type of wear resistan
Material and thus extended working life of the cutting structure while still maintaining high ROP


Equipment Type 7 7/8'' tricone tci bit Pictures:

Packaging & Shipping

 Because of the length just can ship them by sea



Our Services


Cangzhou JW Petroleum Machinery Co.,Ltd have a sound after-sales service system, every clients bought from JW will have a file, which records every downhole motor’s model that the customer purchased from JW. And after sale we will track the use of each one, and help clients to deal with every problem, so dont worry to buy, we will give you high after-sales service.



 Are you Manufacture or Factory?
 Yes we are and from Hejian City Cangzhou city Hebei Province China.
 How about the quality and supply ability?

We can supply you with 300 pcs downhole motor for a month.
What the MOQ?
How to place an order?
1) Inform size and model

2)angle of slope

What is the Pament?
 T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance. We also can accept L/C AT SIGHT if the quantity is large.


Company Information


Cangzhou JW Petroleum Machinery Co.,Ltd is located in Hejian City, with RMB20,300,000 registered capital. Hejian city is one of locations of well know oilfield Huabei, rich resources and technical supports propelled the establishment and de-velopment of JW.

We specialize in researching and production of downhole motor, tricone bit, PDC bits, HDD rock reamer and PDC reamer. Application fields includes oil well drilling, gas well drilling, geothermal well drilling, mining, geological survey, hydrographic survey, water well drilling, HDD pipelines projects, foundation projects.


Our products and services have covered domestic large oilfields, and exported to many countries and regions like Middle East, North America, South Asia,Central Asia, Russia and so on which help the company to accumulate rich international experience and build a steady and professional sales network and service system.


With high-end equipment in the world, all of our activities are strictly complying with API specifications and ISO 9001:2008 standards, with professional technicists, we commit ourselves to provide optimized solutions for various of applications and requirements, customized solutions for specific projects is our working direction, we have same ultimate aim with customers---‘lower the cost of drilling per meters, achieve the most cost effective’.



Contact US