Specifications
1 soft to hard formation2 raliable seal
3 cost effective
4 long life
Cutting structure
The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
Gauge structure
Multiple gauge 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 capability and bearing life.
Bearing structure
High precision journal bearing with two thrust faces.Balls lock the cone.Hardraced head bearing surface.Cone bearing inlaid with friction-reducing alloy and then silver-plated.Abrasion resistance and seizure resistance 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.
Product application
It is suitable for downhole motor and high speed application.
| bit size | API | Recommended torque for bit connection | |
| in | mm | in | KN.m |
| 7 1/2 | 190.5 | 4 1/2 | 16.3-21.7 |
| 7 7/8 | 200 | 4 1/2 | 16.3-21.7 |
| 8 1/2 | 215.9 | 4 1/2 | 16.3-21.7 |
| 8 3/4 | 222.3 | 4 1/2 | 16.3-21.7 |
| 9 1/2 | 241.3 | 6 5/8 | 37.93-43.30 |
| 9 7/8 | 250.8 | 6 5/8 | 37.93-43.30 |
| 12 1/4 | 311.2 | 6 5/8 | 37.93-43.30 |
By sea By plane , By DHL ,etc.
Usually packing is wooden box, you can put your need ,we will meet your need first.
Perfect after-sales service
Supply use and maintenance support
Welcome to visit our company and inquire any other question, We will answer your questions in detail
guarantee period:3-4 years
- Hejian Hengji Bit Manufacture Co.,Ltd is established in 2012.It is located in hejian,hebei province.It is emerging enterprises in Chinese bit industry.It is mainly engaged in the development,production and sales of all kinds of bits.
- It has developed and mass-produced products 3 to 26 inches series steel tooth bits and tricone bits,various types of PDC bits,core bits and production and processing assembly 0.6m to 3 m large diameter drill bits. We built flexble product line of bit centered by the CNC machine,perfect quality assurance system.We have gotten the quality certificate of ISO9001.
1. How to order the products?
Answer:
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding. http://hengjibit.en.china.cn/
2. About delivery time?
Answer :
The delivery time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
3.Can I expect a quality products?
Answer :
Yes. All our activities are accredited to ISO 9001:2008 , both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
Contact information:
Name:Ocean yang
TEL.:+86-317-8114222
QQ: 2197735445