.

api standard 8-1/2\

Products Specification

There are rich and diverse roller bits to meet different requirements of formations and rotary speeds. The sizes of the gage diameter and the types of bit are strictly designed in accordance with the standards API Spec.7.

There are not only rubber sealed bearing bits but also metal face sealed bearing bits, and all bits are lubricated by new type of wear resistant grease that can sustain high temperature up to 250°C.
The surfaces of main or key parts are hardfaced and treated with friction reducing technology. They can enhance gage protection and prolong the life of bit.
Center nozzle is equipped for bits of larger sizes.

Technical specifications and parameters for Roller Bit (Tricone Bit)

Size

IADC Code

API Regular Pin (in)

in

mm

3 7/8

98.43

126,617

4 1/4

107.9

131,321

2 3/8

4 5/8

117.5

121,241,527

2 7/8

4 3/4

120.6

241

5 5/8

142.9

121,241,321,537

3 1/2

5 7/8

149.2

241,321,517,537,547,617,637

6

152.4

211,216,246,437,517,527,537,547,617,637

6 1/8

155.6

117,211,437,517

6 1/4

158.7

121,241,321,517,527,537,547,637

6 1/2

165.1

517

6 3/4

171.4

121,241,321

7 1/2

190.5

121,124,134,217,244,517,527,547,617

4 1/2

7 7/8

200

121,124,131,134,241,321,517,527,547,617

8 3/8

212.7

215,217,517,527,537,547,617,637

8 1/2

215.9

114,116,117,121,124,126,127,131,134,137,211,216,217 241,247,321,437,447,517,527,537,547,617,637,837

8 3/4

222.2

127,417,437,447,517,537,617

9 1/2

241.3

117,124,125,127,437,517,527,537,617,637

6 5/8

9 5/8

244.5

114,121,124,131,134,437,517,527

9 7/8

250.8

115,121,211,241,321,512,542,612,732

10

254

126

10 5/8

269.9

127,217,417,517,527

11 5/8

295.3

117,127,137,217,417,517,537,547

12

304.8

124,126,216,517,537,547,617

12 1/8

308

547

12 1/4

311.1

114,115,116,117,121,124,126,131,134,137,211,214,244,437,517,527,537,547,617,637

13 5/8

346.1

114,115,121,124,437,515,517

13 3/4

349.2

114,115,437,517

14 3/4

374.6

136,127,517,527

7 5/8

15

381

121,124,241,244

15 1/2

393.7

125,215,217,517,537

16

406.4

115,215,515,535,545

17 1/2

444.5

435,515,437,517,527,537,547

18

457.2

125~547,

18 1/2

469.9

127~ 547

19 1/4

489

115,225

20

508

125,215,437,515,525

22

558.8

125,215,437,515,525

24

609.6

124

26

660.4

114,124,134,525

36

914.4

124

Package:

1.Polywood case

2.Requested by customers

When inquiry, please specify below:

1.Bit size

2.IADC code

3.Connection

4.Port of destination if you need a CNF or CIF price

5.Ideal delivery date if you need the bits urgently

Our Services:

1.Quality products at favorable price in a right delivery

2.Customized design

3.Warranty

Comapny Profile:

Shaanxi Senwell Drilling Equipment Co., Ltd. (SENWELL) is a comprehensive corporation, of which the business scope is manufacture, trade and sale. SENWELL is located in the center of the high development district which is in the east of Xi'an, Shaanxi Province. Supported by abundant technology resources of the high development district, our company is engaged in designing, researching & developing, testing and manufacturing oilfield equipment and providing relative services.
SENWELL's main products cover 220 types and more than 1000 specifications presently. Our business covers non-magnetic products, drilling stem tools, fishing tools, jarring tools, coring tools, cementing tools, milling tools, well head tools, accessory tools, downhole tools, oil mining equipment, drill equipment, well control systems and pipes.
Today, with strong technology and profuse experience, SENWELL not only provides a comprehensive range of oilfield tools, but also provides tools for machinery industry and has decades of production experience. Main products are sand casting, investment casting, forging, centrifugal casting and machining equipment.
We have a great deal of outstanding and seasoned employees. Relying on advanced equipment and techniques, with the scientific management theory and spirit of "seriously dealing with matters relating to works", we have established long-term cooperative relationships with more than a hundred famous and large manufacturers in China. Our company creates a steady-going and reliable environment for our product research, development and sale.
We are based on the tenet of "providing consistent high quality products and the best services to meet the strict needs of our customers; to create value for our customers and provide our customers with a return on their investment" and the business philosophy of "people-oriented, customer first and reliability first". Our products have been successfully exported to Europe, America, the Middle East, South Africa and Southeast Asia. In the international market, we have acquired an excellent reputation among the clients.
We welcome new and old customers from all over the world to contact us for future business relationships and achieving mutual success! To benefit from our strong OEM/ODM capabilities and considerate services, contact us today. We believe you will be better with our support


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