Wireline Swivel Joint

I. Introduction 

A wireline swivel joint is used to minimize the line twist when running in and pulling out of the well. It is usually located below rope socket and the bearings permits rotational movement when maintaining longitudinal rigidity in the tool string. This design is suitable to handle impact from heavy upwards and downward jarring.

II. General Technical Parameters

Note. More customized parts are available upon request.

III. Structure Characteristics 

The wireline swivel joint consists of upper sub, lower sub, mandrel, bearing sleeve, thrust ball bearing, etc.. The mandrel with thrust ball bearing fixed is then installed to the bearing sleeve. The upper sub is connected to the bearing sleeve and the lower sub is connected to the mandrel with screws. And fix the swivel joint between the rope socket and stem. The thrust ball bearing is with tiny friction. When the stem, etc. drives the mandrel to rotate, the upper bearing sleeve and the upper sub do not move. Thus, the wireline connected to the rope socket will be prevented from twisting off.