Sucker Rod Couplings for Sucker Rod and Polished Rod
Specification
●Material: high quality carbon steel or alloy steel. (AISI 1045, AISI 4135).
●Thread size: 5/8", 3/4", 7/8", 1" and 1-1/8".
●Length: 4", 4.5" and 5".
●Grade: T and SM.
●Type: sucker rod coupling, polished coupling and sub-coupling.
Application
●The sucker rod couplings are widely used in the oil industries for connection for sucker rods, polished rods, pony rods, and sinker bars.
●The sucker rod couplings are used for connecting the sucker rod and sinker bars with the same dimensions. But it is not used in the polished rods, which may cause the fracture of the couplings.
●The polished couplings are designed to connect the polished rod and sinker bars.
●The sub-coupling is widely used for the connection of different sizes of sucker rods, pony rods, and sinker bars.
Sucker Rod Couplings Specification
Spec | Internal thread spec | Length | Outside diameter | |
Full size | Slim hole | |||
5/8" | 15/16" | 4" | 38.1mm | 31.8mm |
3/4" | 1-1/16" | 4" | 41.3mm | 38.1mm |
7/8" | 1-3/16" | 4" | 46mm | 41.3mm |
1" | 1-3/8" | 4" | 55.6mm | 50.8mm |
1-1/8" | 1-9/16" | 4.5" | 60.33mm | N/M |
Sub-Couplings Specifications
Spec | Internal thread spec | Length | Outside diameter | ||
Small end | Big end | Full size | Slim hole | ||
5/8" × 3/4" | 15/16" | 1-1/16" | 4" | 41.3mm | 38.1mm |
3/4" × 7/8" | 1-1/16" | 1-3/16" | 4" | 46mm | 41.3mm |
7/8" × 1" | 1-3/16" | 1-3/8" | 4.5" | 55.6mm | 50.8mm |
1" × 1-1/8" | 1-3/8" | 1-9/16" | 5" | 60.3mm | N/M |
Polished Rod Couplings
Spec | Internal Thread Spec | Length | Outside Diameter | Vanish Cone | |
Full size | Slim hole | ||||
5/8" | 15/16" | 4" | 38.1mm | 31.8mm | 9° |
3/4" | 1-1/16" | 4" | 41.3mm | 38.1mm | 9° |
7/8" | 1-3/16" | 4" | 46mm | 41.3mm | 9° |
1" | 1-3/8" | 4" | 55.6mm | 50.8mm | 9° |
1-1/8" | 1-9/16" | 4.5" | 60.3mm | N/M | 9° |
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