The possible clamping elements are applied to the external multiple faces. It can be used as nuts, screws or spacer rings. For some special applications, it can also be used externally or internally as an adjustable toroidal clamping surface.
The pressure screw on the cross section of the element makes its structure more compact. The fully closed hydraulic oil chamber is clamped by screwing in the screw. The axial clamping force thus generated is more than the ordinary mechanical clamping force, but it will not be affected by the preload of other mechanical components. It is only subject to the actual effect of the internal pressure in the hydraulic oil chamber, and can be adjusted and controlled by the clamping force display device (at most two stages) on the cross section.
This hydraulic conversion will not produce the effect of radial force. The position of the clamped workpiece remains unchanged. The floating clamping end face also becomes safe and reliable when clamping the workpiece with uneven end face.
The wrench and hammer commonly used in such work will no longer be needed. Therefore, it can greatly improve the simplicity of operation, reduce the time of replacement and avoid accidents.