7 1/2" IADC215 Steel Tooth Tricone Drill Bit

• Customization: Available
• Customized: Customized
• Standard: API, ISO 9001
• Model NO.: 7 1/2"
• Length: Taper-length
• Type: Core Drill Bit
• Material: High Carbon Steel
• Usage: Well Drilling
• Number of Shaft: 3
• Controlling Mode: Artificial
• Structure: Deep Hole Drilling
• Layout: Vertical
• Automatic Grade: Semiautomatic
• Precision: High Precision
• Condition: New
• Hole Diameter: 190.5mm
• Wob: 0.4-1.0kn/mm
• Transport Package: Wooden Case
• Specification: ISO9001
• Trademark: hengji
• Origin: Hebei Hejian
• HS Code: 82071990
• Production Capacity: 1000PCS/Month

Product Description

We guaranteed products at a competitive price and high quality. At present, our products have a very good sale in
Domestic and overseas market. We wish to cooperate with you to create a bright future and mutual benefit. Much appreciation for your prompt attention in advance, we are eager to look forward to hearing from you soon.

Rubber sealed sliding bearing bits are sealed by special type "O". Under the normal rotary speed conditions, they can stand high bit pressure. The bore surface of the cone has been treated with special techniaue in order to improve sliding motion of the bearing. And every performance is improved greatly.
1 O-shape seal ring with high saturation butadience acrylonitrile rubber improved the bearing sealed reliability.
2 To adapt high strength and toughness hard alloy teeth, the shock resistance has been increased and the breakage rate has been decreased.
3 The bearing contact surface, neck journal of jaw have been adapted to wear resistance alloy materials, the special craft processing has been applied in the bore surface of the cone which increases the load capability and the working life.
4 Optimized tooth number of cone and height of tungsten carbide tooth which improved the total cutting property and drilling footage.
5 High-performance lubricant grease has been applied in bearing which increased lubricating and protecting.

IADC	WOB(kN/mm)	RPM(r/min)	Formation
114\115	0.3-0.75	180-50	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,chalk,etc
116\117	0.3-0.8	150-70	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,chalk,etc
124\125	0.3-0.85	180-60	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,salt,loose stands,soft limestone,etc
126\127	0.3-0.9	150-60	Soft formation with low compressive strength and high drillability,such as  mudstone,clay,salt,loose stands,soft limestone,etc
134\135	0.35-0.95	150-50	Soft to medium formation with low compressive strength or soft with harder streaks,such as  mudstone,shale,soft limestone ,sands,etc
136\137	0.35-1.0	120-60	Soft to medium formation with low compressive strength or soft with harder streaks,such as  mudstone,shale,soft limestone ,sands,etc
214\215	0.4-0.95	150-60	medium  hard formation with high compressive strength ,such as  medium soft shale,anhydrite,medium soft limestone ,medium soft sandstone as well as thick and hard streaks,etc
216\217	0.4-1.0	100-60	medium  hard formation with low compressive strength ,such as  medium soft shale,limestone and sandstone as well as thick and hard streaks,etc
244	0.35-0.95	150-50	medium  hard formation with high compressive strength ,such as  hard shale,sands ,limestone,etc
246\247	0.4-1.0	80-50	medium  hard formation with high compressive strength ,such as  hard shale,sands ,limestone,etc
324\325	0.4-1.0	120-50	hard formation with  high strength and abrasiveness such as hard limestone,hard sands,dolomite,hard shale,etc