Tribology

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    Seal & Coating Interaction

    Bosch Rexroth uses proven sealing technology developed in-house that minimizes abrasion, friction, erosion and corrosion during piston sliding. Pairing the right sealing system with surface coating drastically improves tribological performance.

  • next page

    Seal & Coating Interaction

    Bosch Rexroth uses proven sealing technology developed in-house that minimizes abrasion, friction, erosion and corrosion during piston sliding. Pairing the right sealing system with surface coating drastically improves tribological performance.

Content

The most critical aspect of large hydraulic cylinders is the combination of different technologies. The tribology interaction between surface technology, seal technology and fluid technology is essential. The in-house development and combined know-how plays an important role when Rexroth combines technologies to achieve optimal solutions for its large hydraulic cylinders.

Tribology

In the most general sense, tribology analyzes interacting surfaces, taking into account friction, wear, and lubrication factors. Tribological interaction is especially critical in cylinder manufacturing due to their immense surface area, force requirements, and the extreme environments in which they operate. Since total ownership costs and lifespan depends on intelligent engineering from the start, Rexroth has spent years researching and developing a system that provides best-in-class surface, seal, and fluid performance for any application.

Seal Technology

Selecting the most efficient sealing system is crucial to the performance of any cylinder. Rexroth's matrix takes into account the seal configuration, wipers, sliding rails, and piston seal to create a cohesive unit that eliminates leakage and friction.

  • Heavy duty performance
  • High compressive strength allowance
  • Extreme chemical resistance
  • Extreme wear/tear resistance
  • Low friction
  • Near-zero leakage

Fluids

Using incorrect fluids in a cylinder will have catastrophic consequences. Rexroth recognizes the importance of customizing fluids that are adapted to specific requirements and match the seals and surface coating. Therefore, chemical resistance to seal material, lubrication, and fluid performance are tested extensively.