Positive Displacement Motors
The PDM Bearing Section contains a mud-lubricated bearing stack that utilize a stacked ball-and-race to handle thrust loads, while carbide radial bearings handle side loads. An advantage of mud lubricated bearings is that there are no limitations on bit pressure drop compared to a sealed bearing assembly and temperature is not generally an issue. The bit pressure drop can be maximized for optimum penetration rate, without adversely affecting the life of the bearing assembly.
Features & Benefits
- Proven field reliability
- Stacked ball and race bearing section
- Multiple successful job history
- No limitations to bit pressure drop