Back-up ring for Terex BT4792

The back-up ring, identified by part number 226088, functions as a support component within the front jack cylinder assembly of the Terex BT4792 crane. Its primary role is to provide structural backing to dynamic seals, such as O-rings, which prevents the seals from extruding into the clearance gaps under the high-pressure conditions generated during hydraulic operation. By maintaining the seal in its intended position, this component ensures the integrity of the hydraulic circuit and assists in preventing fluid leakage from the cylinder.

This component is specifically engineered for fitment in the front jack cylinder of the Terex BT4792 model. In heavy machinery, back-up rings are used in conjunction with primary sealing elements to manage the stresses found in hydraulic cylinders. By preventing the deformation of seals, the ring helps maintain a consistent seal, which is necessary for the cylinder to exert the force required for stabilizing the crane during lifting operations.