8 1\2'TCI tricone bit

8 1\2'TCI tricone bit

Product description:

Quick Details

  • Place of Origin: Hebei, China (Mainland)
  • Brand Name: Fistbit
  • Model Number: HJ127
  • Type: Twist Drill Bit
  • Material: Tungsten Carbide
  • Use: Masonry Drilling
  • Color: Various
  • Qualty: High
  • Processing type: Forging
  • Certification: API&ISO

Packaging & Delivery

Packaging Details: wooden box, steel box or depend on your demand
Delivery Detail: within 7-15 work days


1 mining tricone bit for drilling
2 sealing: metal sealed
3 IADC: HJ127
4 adequate stocks
5 high quality

Hejian Fist Petroleum Equipment Co., Ltd we have been in line with the principle of faith-based, quality of survival and mutual benefit, provides the highest quality products and attentive service for our customers'. We are looking forward to establishing relationships with you in the near future

TCI tricone bit; TCI tricone bit with sealed bearing ; tricone bit; TCI tricone rock bit

1. Cutting Structure

The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

2. Gauge Structure

Multiple gauge protection with gauge trimmers on 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.

3. Bearing Structure

High precision bearing with two thrust faces. Balls lock the cone. Hardface heard 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.

4. Seal and Lubrication

The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal 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.

1. Description of this Product


8 1/2''



IADC CodeHJ127
Types of bearingsliding bearing
Types of sealingmetal sealed
Application formation

Medium soft with low compressive strength and harder abrasive

stringers; such as hard shale; hard gypsolyte; soft limestone; sandtone

and dolomite with stringer, etc

Main characteristics of bit (cutting structure)

Offset crested scoop compacts in inner row, wedge compacts in outer

row and inequable spaced compacts arrangement

Normal WOB KN/ mm (bit dia.)


Rotary speed (rpm)


2. Other Products You maybe Interested in




TCI Tricone Bit

3 7/8 ; 5 1/2; 6 1/2

7 7/88 1/28 3/4

10 5/812 1/4

13 3/4, 17 1/2.

22, 2426

417 427 437

517 527 537

617 637 737

Steel Tooth Tricone Bit

3 7/8 ; 5 1/2; 6 1/2

7 7/88 1/28 3/4

10 5/812 1/4

13 3/4, 17 1/2.

22, 2426

115 116 117 215 216 217 315 316 317 325 327


(3 blades, 4 blades.

5 blades, 6 blades)

5 1/2, 6 1/2

7 7/88 1/28 3/4

10 5/812 1/4

13 3/4, 17 1/2.

22, 2426

M223, M322, M316.

M222; M416; M122

Products Picture

• These types of bits have some common features, as follows

1. Force balanced, resist impact to the blade during high-speed drilling, to make bit work stable.

2. Plus wear knot section, reduce collion in the hugh-speed rotational vibration.

3. Patented matrix formulation, extended bit life.

4. Optimal hydraulic desigh, easy to move out the drill cuttings and cooling.

5. Equipped with back reaming teeth.

6. The cutter is high performance to increase the ability of anti-impact and anti-abrasive.

3. Certification

4. Packing Information

5. FAQ (Frequently Asked Questions)

(1) . How to order the products?
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.
(2) . About lead time and shipping time?
Answer :
The lead 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.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.

(3) .Can I expect a quality products?
Answer :
Yes. All our activities are accredited to ISO 9001: 2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.

6. Payment terms

T/ T and L/ C are acceptable. (30% advanced payment after sign the contranct , then 70% payment after see the B/ L)

7. Plz add these informations in you inquiry

1, bits size

2, bits IADC CODE

3, layer information

4, bits quantity

8. Other Series

9. Contact Person