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Drilling Reamer

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product description

The roller stabilizer (drilling reamer) is used for all kinds of reaming stabilization in drilling operation, especially the function of stabilization in drilling of the abrasive formation. It is a very popular tool for hole size from 4 5/8 to 26″. Additionally, it can be used in different hole when same body is equipped with different bearing block and roller. The body is made of modified alloy steel, fully heat treated to 285~341Brinell hardness and 54J minimum impact strength.

Rollers are available below:

1. Narrow-teeth type is used for cutting of hole wall for soft formation.

2.Wid-flat-teeth type is used for crushing into pieces of borehole wall for medium and hard formation.

3.Inserted tungsten carbide alloy type is for hard formation.

Thechnical specification and parameters:

Type

Hole(in)

Thread API

O.D.(mm)

I.D(mm)

Overall
Length
(mm)

O.D.on
each end
(mm)

Roller
dia.
(mm)

Roller
length
(mm)

JKQ155

6  1/8

3  1/2"

155

31.7

1470/1572

140

51

200

JKQ206

8  1/8

4"IF

206

38

1600

160

70

200

JKQ212

8  3/8

4  1/2"REG

212.7

44

1600

160

70

200

JKQ215

8  1/2

4  1/2"REG

215.9

50.8

1730/1844

160

70

250

JKQ244

9  5/8

NC50

244

57

1800

178

70

250

JKQ311

12  1/4

6  5/8"REG

311.2

71

1773/2127

203

105

300

JKQ444

17  1/2

7  5/8"REG

444.5

76

2200

228

140

350

JKQ660

26

7  5/8"REG

660.4

76

3000

254

178

400

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