Qingdao Nokunda Drilling Tools Co., Ltd.

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Qingdao Nokunda Drilling Tools Co., Ltd.  

 No. 15 Donghai Xi Road, Shinan District, Qingdao City, Shandong Province, China

Whatsapp: +86 13792983690

Wechat: +86 13792983690 

Email: [email protected]

 

 

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11" NGA745G

11" NGA745G
Product Name : 11" NGA745G
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CUTTING STRUCTURE

Conical on gage, double spherical on inner rows.
Designed for high compressive strength, hard and abrasive formations, such as granite, limestone, sandstone, dolomite.
Compressive strength: 46,000-56,000 psi/317-386 MPa

 

SHIRTTAIL PROTECTION

Hard welding and wear resistant carbide protection on shirttail lip and lug

 

PRODUCT SPECIFICATION

IADC Code:  745 (other IADC Code such as 635, 645 etc. also available).

Bearing Type: Roller-Ball-Roller-Thrust Button / Sealed Bearing

Circulation Type: Jet Air

Cutting Structure: 

Inner and Nose Rows: Double spherical

Gage Rows: Spherical

Auxiliary Carbide: Spherical

Pin Connection: 6 5/8″ API REG

Metric Bit Diameter: 279 mm

Product Weight: 167 lbs/76 kg

 

OPERATING SUGGESTIONS 

Weight on Bit: 44,000-77,000lb/20-35T

Rotary Speed: 60-90rpm

Air Back Pressure: 29-58 psi/0.2-0.4 MPa

 

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