Parameter of S Series Non-Sealed Roller Bearing Tri-Cone Bit
Cutting Structure
Reinforcing the wear-resistance of teeth by using with premium tungsten carbide hardfacing on the tooth surfaces.
Bearing Structure
Non-sealed roller bearing. Drilling fluid can enter the bearing directly for cooling. Balls lock cone, that lowers the accident of cone-dropping to minimum.
Product Application
It is applicable for the shallow well, water well and geothermal well.
| Bit Size | Bit Model | |
| inch | mm | |
| 4 1/4 | 107.9 | S131C S321C |
| 4 5/8 | 117.5 | S241C |
| 4 3/4 | 120.6 | S241C |
| 5 5/8 | 142.9 | S121 S241 S321 |
| 6 | 152.4 | S211 |
| 6 1/4 | 158.7 | S121 S241 S321 |
| 6 3/4 | 171.4 | S121 S241 S321 |
| 7 1/2 | 190.5 | S121 |
| 7 7/8 | 200 | S121 S131 S241 S321 |
| 9 7/8 | 250.8 | S121 S211 S241 S321 |
| 12 1/4 | 311.1 | S211 |
