Scrapers are installed in hydraulic and pneumatic cylinders to wipe off dirt, foreign particles, chips, ice, moisture etc. from the piston bar. This prevents contamination of the medium and protects seals, guides and other components.
The standard profiles shown below are wipers that represent the state of the art. We manufacture these standard wipers in-house or supply them as moulded parts from approved partners for all required groove dimensions in a variety of materials. Depending on the quantity, the material and your requirements, we offer wipers in the appropriate manufacturing process – everything from one source!
You can find a general overview and further information in the following categories:
The more information is known, the better a wiper system can be adapted to a specific application.
A basic distinction is made between single-acting wipers, which protect the hydraulic or pneumatic system from external contamination, and double-acting scrapers, which must also be seen as part of the sealing system in interaction with the seals.
To choose the right profile and the optimal material, the following criteria are important:
up to 1 m/s
-55 to +220 °C (depending on material)
up to 15 m/s
-55 to +280 °C (depending on material)