We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
API 11B Oilfield Sucker Rod and Polished Rod Couplings
Polished rod couplings are designed for connecting of the polished rod to the top rod of the string. Contrary to rod couplings, polished rod couplings have a female cone that eliminates the coupling twist-off in the course of operation.
Sucker rod coupling is used to connect two sucker rods. The grade is API Grade T.
Spray metal couplings are better in anti-corrosion than common sucker rod couplings.
Slim hole and full size couplings are available.
Polished rod couplings are designed for connecting polished rod to the top rod of the string. Contrary to rod couplings, polished rod couplings have a female cone that eliminates the coupling twist-off in the course of operation.
Parameters of Sucker Rod and Polished Rod Couplings
| polished rod coupling | |||||
| Size(in) | Coupling O.D W(mm) | Length L(mm) | Thread D.(in) | Vanish Cone | Hardness(HRA) |
| (+0.13,-0.25) | (+1.57,-0.00) | ||||
| 5/8″ | 38.1 | 101.6 | 15/16″ | 9O | 56-62 |
| 3/4″ | 41.28 | 1-1/16″ | |||
| 7/8″ | 46 | 1-3/16″ | |||
| 1″ | 55.6 | 1-3/8″ | |||
| 1-1/8″ | 60.33 | 114.3 | 1-9/16″ | ||
| Parameters | ||||||
| Type | grade | O.D(mm) | Minimum lengh(mm) | Hardness | Weight(kg) | Standard |
| reference | ||||||
| 3/4″ | 19-T | 41.05~41.43 | 101.6~103.17 | 56-62HRA | 0.65 | API 11B |
| 7/8″ | 22-T | 45.75~46.13 | 45.75~46.13 | 56-62HRA | 0.8 | API 11B |
| 1″ | 25-T | 55.35~55.73 | 55.35~55.73 | 12-23HRA | 1.15 | API 11B |
We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed replacement parts contained herein are not sponsored, approved, or manufactured by the OEM.
