SANAL model bits have roller bearings and rubber toric seals. It is designed for drilling at high rotational speed. It has the following advantages:
- rollers are located in a groove machined in a cone, which lets increase the size of a spike. In this case, the bit can operate at high axial load and high rotation speed.
- surface of the thrust bearings is covered with a layer of high-strength material, that improves reliability of the bearings and increase permissible axial load.
Specifications
|
10 5/8 269,9 |
11 5/8
295,3 |
12
304,8 |
12 1/4 311,1 |
||||||
| IADC code | model | IADC code | model | IADC code | model | IADC code | model | IADC code | model |
|
127 217 417 517 527 |
ST127GW
S127G ST417G ST517G ST527G |
117
127 137 217 417 517 537 547 |
S117GW
S127GW S137GW S217G ST417G ST517G ST537G ST547G |
124
126 216 517 537 547 617 |
S124W
S126W S216 ST517 ST537 ST547 S617 |
114
115 115 116 117 121 124 124 126 131 134 137 211 214
|
S114
S115W ST115W S116 ST117W S121 S124 S124W S126 S131 S134 S137 S211 S214
|
244
321 324 437 437 517 517 527 537 537 547 547 617 637 |
S244
S321 S324 S437G ST437G S517 ST517 S527 S537 ST537 S547 ST547 S617 S637 |