Customization: | Available |
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Manufacturing Process: | Forging |
Surface Treatment: | Galvanized |
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We provide trustworthy bushings for use in all rotary drilling and casing applications. We offer a time tested and industry proven line of bushings to accommodate both primary and backup rotary drilling applications. Our supply includes a wide range of casing bushings, master bushings and roller Kelly bushings to accommodate virtually any combination of rotary table and tubular.
Features:
1.Roller kelly bushing is a necessary tool for drilling.
2.It is to drive kelly spinner by matching with master bushing. Through rotating of four rollers, the friction between rollers and kelly pipe is reduced and service life is extended.
3. For different sizes of kelly pipe and hexagonal pipe only need to change corresponding rollers. To connect with rotary table, there are two transmission styles (square drive and pin drive).
4.The product is designed and manufactured according to API Spec 7K "Specification for Drill Equipment".
Technical Specification and Parameter:
Model |
HDS |
27-HDP |
20-HDP |
MDS |
20-MDP |
17-MDP |
LDS |
|
Type |
Heavy |
Medium |
Light |
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Max. torque |
N.m |
32365 |
22555 |
13729 |
||||
ft.lbf |
23871 |
16636 |
10126 |
|||||
Drive Mode |
Square |
Pin |
Square |
Pin |
Square |
|||
Square |
mm |
76.2~152.4 |
63.5~133.35 |
63.5~133.35 |
||||
in |
3~6 |
21/2~51/4 |
21/2~51/4 |
|||||
Hex |
mm |
76.2~152.4 |
76.2~107.95 |
76.2~107.95 |
||||
in |
3~6 |
3~41/4 |
3~41/4 |
|||||
Size |
mm |
630*630*740 |
630*630*780 |
493*493*696 |
510*510*720 |
458*458*700 |
508*508*700 |
|
in |
24.8*24.8*29.1 |
24.8*24.8*30.7 |
19.4*19.4*27.4 |
20*20*28.3 |
18*18*27.5 |
20*20*27.5 |
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Weight |
Kg |
700 |
730 |
670 |
420 |
460 |
340 |
400 |
lb |
1540 |
1610 |
1470 |
924 |
1012 |
750 |
808 |