SL series pilot & ream cone bit
Suitable for full diameter surface drilling, mine drilling and foundation works drilling.
Dimension, type and recommended parameter
|
Dimension |
type |
|
|
in |
mm |
|
|
28 |
711.2 |
SL117GW, SL127GW, SL517G. SL537G |
|
30 |
762.0 |
SL117GW, SL127GW, SL517G. SL537G |
|
32 |
812.8 |
SL117GW, SL127GW, SL517G. SL537G |
|
36 |
914.4 |
SL117GW, SL127GW, SL517G. SL537G |
|
IADC |
recommended parameter |
formation |
|
|
bit pressure （k N/ mm） |
rotational speed （r / min） |
||
|
517 537 |
0.4~1 |
120~60 |
medium soft shale 、medium cotton rock 、medium-soft sandstone |
|
117 127 |
0.35~0.9 |
150~70 |
mud stone、plaster stone 、salt rock 、soft shale 、cotton rock |
