NeoTork is made up of two sections, assembled as a sole body.
There is a boxed connection in the top section of the tool. A shaft in the lower section of the tool supports the pin connection. The tool is supplied to site ready to use.
Includes a barrel, with a stack of disc springs inside. These springs are compressed during assembly.
The springs push on an axis, forcing NeoTork to extend up to its full length. The number of springs depends on the preset threshold for WOB and torque.
The disc springs are packed in a calibrated quantity and also absorb the tool's axial movement.
The bottom assembly manages the extension or contraction of the tool. The rotating body, which includes the bottom shaft, is attached by steel cables to the upper section. In the extended position, the cables are set at 30°.
When torque levels on the bottom shaft exceed the resistance exerted by the disc springs, the shaft will rotate clockwise. This forces the cables to ‘swivel’ around the sleeve at an increasing angle, lifting the bottom shaft until torque returns to the set level.
As the bit drills off and torque decreases, the opposite action occurs, letting the tool naturally return to its full length.
Shoulders limit the maximum upward and downward amplitude of the shaft stroke. It is these shoulders, not the cables, that stop the extension or contraction of the tool.