4 3/4′′ Steel Tooth Milled Tooth Tricone Drill Bit

• Place of Origin: Hebei, China
• Brand Name: Hj
• Machine Type: Drilling Tool
• Bits Material: Carbide
• Processing Type: Forging
• Bits Use: Well Drilling
• Colo: Blue, Red, Yellow...
• Transport Package: Wooden Case
• Specification: according requirement
• Trademark: HJ
• Origin: Hebei
• HS Code: 82071990
• Production Capacity: 1000PCS/Month

Product Description

 

HENGJI BIT SPECIFICATION
Bit Size	4 3/4''   120.7mm
IADC Code	217
Series	HR
Tooth type	Mill tooth
Connection	2 7/8 API REG PIN
Bearing	rubber sealed bearing
Rotary Speed(rpm)	100~60
Weight on Bit(KN/MM)	0.4~1.0
Application	water well,oil well,HDD,exploration,etc
Formation	Medium hard with hard streaks and low compressive strength,such as medium soft shale,limestone and sandstone as well as thick and hard streaks,etc.

Bit Size		Bit Type
in	mm
31/2	88.9	HR527
45/8	117.5	HR126	HR517
43/4	120.7	HR116
57/8	149.2	HR216	HR537	HR547	HR637
6	152.4	HR117	HR216	HR246	HR517	HR547
61/4	158.8	HR127	HR247	HR517	HR527	HR547	HR637
61/2	165.1	HR127	HR217	HR517	HR537
63/4	171.5	HR116	HR447	HR537
71/2	190.5	HR127	HR217	HR517	HR517	HR527	HR527	HR617
77/8	200	HR177	HR437	HR517	HR527	HR537	HR547	HR547	HR617	HR627	HR637
83/8	212.7	HR217	HR527	HR547
81/2	215.9	HR117	HR127	HR137	HR217	HR247	HR437	HR447	HR517	HR527	HR537
		HE547	HR617	HR627	HR637
83/4	222.3	HE116	HR437	HR517	HR537	HR627
91/2	241.3	HR117	HR127	HR417	HR437	HR517	HR527	HR537	HR547	HR617
95/8	244.5	HR117	HR127	HR137	HR217	HR437	HR517	HR527
97/8	250.8	HR117	HR127	HR137	HR217	HR417	HR437	HR517	HR527
105/8	269.9	HR127	HR217	HR437	HR517	HR547
115/8	295.3	HR117	HR127	HR137	HR217	HR147	HR517	HR537	HR547
121/4	311.2	HR117	HR127	HR137	HR417	HR437	HR517	HR527	HR537
		HR547	HR617	HR627	HR637
135/8	346.1	HR437	HR517	HR537
133/4	349.3	HR437	HR517	HR537
143/4	374.7	HR117	HR127	HR137	HR517	HR527
151/2	393.7	HR127	HR217	HR517	HR527	HR537	HR547
16	406.4	HR117	HR127	HR127	HR517	HR527	HR537	HR547
171/2	444.5	HR117	HR127	HR137	HR437	HR517	HR527	HR537	HR547
18	457.2	HR547

  
IADC

First Digit(1~8):

-1,2, and 3 designate STEEL TOOTH BITS with 1 for soft,2 for medium and 3 for hard formations.
-4,5,6,7 and 8 designate TUNGSTEN CARBIDE INSERT BITS for varying formation hardness with
4 being the softest and 8 the hardest.

Second Digit(1~4):

 
-1,2,3, and 4 are further breakdown of formation with 1 being the softest and 4 the hardest .
 

Third Digit(1~7):
This digit will classify the bit according to bearing/seal type-see information on different bearing types-and special guage wear protection as follows:

-1. Standard open bearing roller bit.
-2. Standard open bearing roller bit,air-cooled.
-3. Standard open bearing roller bit with gauge protection which is defined as carbide inserts in the heel of the cone.
-4. Sealed roller bearing bit.
-5. Sealed roller bearing bit with gauge protection on heel  of cones.
-6. Journal sealed bearing bit.
-7. Journal sealed bearing bit with gauge protection on heel of cones.

Feature Code:
The following letter codes are used in the fourth digit position to indicate additional features:

A. Air Application
R. Reinforced Welds
C. Center Jet
S. Standard Steel Tooth
D. Deviation Control 
X. Chisel Insert 
E. Extended Jet 
Y. Conical Insert 
G. Extra Gage Protection 
Z. Other Insert Shape 
J. Jet Deflection 

Company Information

 Hejian Hengji Bit Manufacture Co.,LTD  is specialized in manufacturing high quality rock bit,especially for tricone bit,PDC bit,hole opener,single cone bit and drag bit.with advanced CNC machines and R&D team and on-time delivery. We have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices .
    We ship to more than 40 different countries and serve industries such as Oil & Gas, water well , Construction,Mining,  Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.
     Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop.  Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim.  We have been always insist on"Hengji bit,focusing on quality".  
 

Main products
tricone bit(mill tooth and tungsten carbide insert tricone bit)
PDC bit(matrix body and steel body PDC bit)
hole opener(HDD rock reamer,barrel reamer,etc)
drag bit(step drag bit,PDC drag bit,chevron drag bit,etc)
accessories(single cone,bit breaker,nozzle ,etc)   

Contact us
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