4 1/2 Inch IADC737 TCI Tricone Roller Rock Bit

• Customized: Customized
• Standard: API
• Length: Jobber-length
• Type: Tricone Roller Bit
• Material: Tungsten Carbide
• Usage: Well Drilling
• Model NO.: 4 1/2 inch/114.3mm
• Thread Connection: 2 3/8 API Reg
• Condition: New
• Tooth Type: TCI
• Bearing: Rubber Sealed Journal Bearing
• Transport Package: Plywood Case
• Specification: 4 1/2′′
• Trademark: Miracleland
• Origin: China
• HS Code: 8207191000
• Production Capacity: 50000PCS/Year

Product Description

Product Description

Main Structure Features
1. Journal bearing. Hardfaced head bearing surface. Inner hole of cone is silver-plated. The load capacity and seizure resistance of the bearing is greatly improved.
2. O ring seal is made of the more wear resistant and high saturated buna-N with the increased seal section and precisely designed scaling flange in the cone sealing area has increased the reliability of the seal.
3. All rubber compensator is used which can limit pressure differential and prevent drilling fluid from entering the lubrication system and this provides the bearing system with good assurance of lubrication.
4. High wear resistance and excellent cutting ability of the insert bit are given full play by using carbide compacts of high strength and high toughness in combination with optimized compact numbers androws, the exposure height and special shaped compacts. For steel tooeh bit, the tooth surface is hard faced with new type of wear resistant material and thus has extended working life of the cutting structure while still maintainina hiah ROP.

 

PRODUCT SPECIFICATIONS
Product name	4 1/2 inch CR737 TCI tricone bit
Size	4 1/2 inch,114.3mm
Model number	CR737
Series	CR
Tooth type	TCI
Connection	2 7/8"  Reg pin
Bearing	rubber sealed journal bearing
Nozzle	center jet nozzles
Application	water well,oil well,HDD,exploration,etc
Weight	8kg
Certificate	,SY/T5164,ISO9001:2008
RECOMMENDED ROCK FORMATION
hard formation with high compressive strength and high abrasiveness,such as limestone,dolomite,sandstone and chert,etc.
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
Type&IADC code	417	437	447	517,527	537,547	617,627	637,647	737,837
WOB(KN/mm)	0.35~0.90	0.35~0.95	0.35~1.00	0.35~1.05	0.35~1.05	0.35~1.05	0.70~1.20	0.70~1.20
RPM(r/min)	140~70	140~60	140~60	120~50	110~40	80~40	70~40	70~40

 

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