Knuckle Joints

The Knuckle joint is generally installed below the jar to add flexibility to the tool string, allowing the assembly to run smoothly into directional or deviated wells. Torque is transmitted via internal key blocks inside the joint.

Features

• Full internal through bore design
• Superior sealing performance
• Maximum deflection angle: 15°
• Torque-bearing capacity
• Can be converted into a free-rotating standard universal joint by removing the steel balls from the torque transmitting universal joint