Type D wiper for Terex BT4792

The type D wiper, part number 226851, is a component used in the topping cylinder assembly of the Terex BT4792 crane. It is installed at the rod end of the hydraulic cylinder to maintain the cleanliness of the rod surface during operation. By scraping away dust, dirt, and moisture as the rod retracts, the wiper prevents these external particles from reaching the internal sealing system of the cylinder.

This component is specifically designed for the topping cylinder on the Terex BT4792 model. It functions to protect internal seals and cylinder surfaces from abrasive contamination that can lead to fluid degradation or mechanical wear within the hydraulic circuit.

Wipers are used in hydraulic cylinders to keep the rod clean and prevent contaminants from entering the cylinder housing. By maintaining a clean rod surface, the wiper helps preserve the integrity of the primary seals and prevents internal damage to the cylinder bore, which is essential for maintaining consistent hydraulic pressure and preventing leaks in heavy machinery.