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Sany Rotary Drilling Rig Kelly Bar

We provide drilling rig kelly bars in the following rig models:SR250, SR280R, SR280RII, SR280DIID, SR280LH SR285RC8, SR360RC8,SR360III, SR385RC8, SR460.

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\Xuzhous(HXING) brand kelly bars are compatible with SANY drilling rigs, and come as either an interlocking kelly bar or a friction kelly bar. These kelly bars use SANYs design concept, keeping the square head structure, while using our own patented designs, as listed below,

Patents /Additional Design

1.Double rivet welding hole pressure block patent.

2.Kelly bar protective ring patent.

3.Longer square head joint.

4.Kelly bar up and down protective moving device patent.

By combined these unique characters together, our SANY kelly bars have become widely recognized by SANY drilling rig factories and customers both home and abroad.

SANY Drilling Rig Kelly Bar Section Parameters

Rigs Model

Kelly Bay

Domination

Number of Tube

Outer Pipe Length (m)

Drilling Depth

(m)

Transportation Length (m)

Total Weight

(ton)

 

 

 

 

SR250

 

 

 

Interlocking

4

14

50

15.5

10.6

4

13

47

14.5

9.9

4

12.5

45

14

9.6

4

12

42

13.5

9.2

3

13

37

14.5

9.1

3

12

34

13.5

8.4

4

10

34

11.5

7.9

4

9

30

10.5

7.3

 

Friction

5

14

64

15.5

10.2

5

13

59

14.5

9.6

5

12.5

55

14

9.2

4

10

35

11.5

7.7

 

 

 

 

 

SR220C

 

 

 

Interlocking

3

12

34

13.5

8.4

3

13

37

14.5

9.1

4

9

30

10.5

7.3

4

10

34

11.5

7.9

4

12

42

13.5

9.2

4

12.5

45

14

9.6

4

13

47

14.5

9.9

 

 

Friction

4

10

35

11.5

7.7

5

12.5

55

14

9.2

5

13

59

14.5

9.6

5

14

64

15.5

10.2

Kelly Bar Classification and Structure

Locking kelly bar systems are designed for drilling hard materials, as well as when a crowd force application is needed.

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They come with drive rails designed with locking pockets on there length and the corresponding terminal joint locking guides.

The purpose is to interlock each telescopic element to an inner following element in order to apply maximum torque and crowd force developed by the base rig. Due to this, the rotary tables inner drive is equipped with locking pockets.

When extracting the locking bar from the hole, a combination of lifting and rotating counterclockwise allows the telescopic element to unlock.

Locking bars typically come with 3, 4 and 5 telescopic element to unlock.

Drive rail steel quality: German imported steel palate

Drive stub steel quality: Special forged steel

Drive stub dimensions: 200*200, 150*150 or customized.

Outer pipe available diameter: 254, 292, 298, 305, 343, 368, 378, 445.

Upper shock absorbed systemDamping rubber ring

Lower shock absorbed system: Damping rubber ring and damping spring.

Number of telescopic elements: 3, 4, 5, 6, other on request.

Friction Kelly bars transfer the torque to the drilling hole.  

The telescopic elements are advanced using a friction contact from each of the friction drive rails that run down the outside of each kelly bar.These drive rails are driven by rotary table and terminal joints of each successively larger diameter kelly bar. The terminal joint is a long piece on the inside and bottom of each kelly bars.

Frictional kelly bars typically are available with 3, 4, 5 or 6 telescopic elements. They are primarily used for deep piles in the medium hard soil conditions.

 

Drive rail steel quality: German imported steel palate

Drive stub steel quality: Special forged steel

Drive stub dimensions: 200*200, 150*150 or customized.

Outer pipe available diameter: 254, 292, 298, 305, 343, 368, 378, 445.

Upper shock absorbed systemDamping rubber ring

Lower shock absorbed system: Damping rubber ring and damping spring.

Number of telescopic elements: 3, 4, 5, 6, other on request.

Copyright: Xuzhou Hengxing Jinqiao Machinery Technology Co., Ltd  Technical Support Administrator