Surface · Rod Pump
Polished Rod & Clamp
The smooth top rod that hangs from the carrier bar on a clamp and passes through the stuffing box into the well.
What it does
Carries all the loads of the pump cycle and gives the stuffing box a smooth surface to seal against.
Basics
| Material | Alloy steel with hard spray metal coating |
| Held by | Polished rod clamp on the carrier bar |
| Loads | Swings between peak and minimum polished rod load |
Common failures
- Scored surface that destroys packing
- Clamp slipping
Troubleshooting
- Symptom
- Stuffing box leaks soon after new packing
- Likely cause
- Polished rod scored or bent
- What to check
- Inspect and replace the polished rod