Gripper Jacks

A 950 metric ton push/pull capacity Bardex Gripper Jack (the world’s largest) capable of moving loads up to 3,800 metric tons.

Safe and Effective Heavy Load Skidding

Bardex is the world’s leading manufacturer of hydraulic Gripper Jack Skidding Systems, including those in use on almost all multi-well drilling platforms in the North Sea.

A recently installed Bardex Gripper Jack Rig Skidding System.

The term “Gripper Jack” was coined by Bardex engineers who developed the first Gripper Jack in the 1960’s. Bardex is the industry standard and world market leader.

The key element in any Bardex Skidding System is a hydraulic friction-lock device (aka “Gripper”) on which is mounted the double acting hydraulic jacking cylinder(s) (aka “Jack”). The Gripper clamps the flange of the beam on which the load is resting and acts as a moveable reaction point for the Jack.

The table below explains the basic sequence of steps which Bardex Gripper Jacks use to move such massive loads.

Gripper Jack Operating Sequence

1. Gripper Jack Assembly mounted to jacking beam and attached to load.

2. The Gripper is pressurized, locking it to jacking beam.

3. Pressure is maintained in Gripper; the Cylinder is extended, moving the load.

4. Pressure is released from the Gripper unlocking it from jacking beam.

5. The Cylinder is retracted, moving the Gripper into position for next move.

A complete system includes at least two Gripper jacks, plus the requisite Hydraulic Power Unit, operators control console, and the interconnecting high pressure hydraulic hoses. Lateral and longitudinal movements are accomplished through the use of four Gripper Jacks, two for the “X” movement and two for “Y” movement, selection being simply effected by a valve manifold on the control console.

For Additional Information

Bardex has the capability to design and manufacture Gripper Jack Skidding Systems that can move loads exceeding 20,000 metric tons.

If you would like to obtain information regarding our Gripper Jacks, please call us at (805) 964-7747 or Email Us.