Type ST5    words_sp_new.gif

 

 

 

The ST5 is a  5 blade PDC drill bit  with a solid steel base and embedded PDC cutters. Caused by its construction this bit comes with a big single center flush hole.

Because of its geometry, this type is particularly suitable for semi hard up to hard sedimentary rocks such as Clay-, marl-, sand-, or limestone.
Distributed due to the large number of PDC cutters placed on 5 cutting blades made this bit good for long periods
with less wear out and less vibrations while drilling.

 


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This type is available in the following sizes:

 

Ø in inch Ø in mm Thread Available
3 7/8" 98 2 3/8" API Regular

Yes

4" 102 2 3/8" API Regular

Yes

4 1/4" 108 2 3/8" API Regular

Yes

4 1/2" 114 2 3/8" API Regular

Yes

4 3/4" 121 2 3/8" API Regular Yes
5" 127 2 3/8" API Regular Yes
5 1/8" 130 2 3/8" API Regular Yes
5 5/8" 143 2 3/8" API Regular Yes
5 7/8" 149 2 3/8" API Regular Yes
6" 152 2 3/8" API Regular Yes
6  1/4" 159 3 1/2" API Regular Yes
6 3/4" 171 3 1/2" API Regular Yes
7 3/8" 187 3 1/2" API Regular Yes
7 7/8" 200 3 1/2" API Regular Yes
8 1/2" 216 3 1/2" API Regular Yes
9" 229 3 1/2" API Regular Yes
9 5/8" 244 3 1/2" API Regular Yes
9 7/8" 251 3 1/2" API Regular Yes
11"

280

3 1/2" API Regular Yes