Abstract
This article elaborates on the core functions, structural composition and oil passage design types of shock absorber pistons, compares the advantages and disadvantages of fixed-orifice and adjustable pistons, and forecasts the development trend of future active variable-cross-section pistons.
Structural Schematic Diagrams
Figure 1: Schematic Diagram of Shock Absorber Piston Assembly (Including Piston Rod, Orifices, Valve Stack)
Core Key Points
- The core function of the piston is to generate damping force by regulating the throttling of hydraulic oil.
- Main components consist of piston body, rebound/compression valve shims, orifices and limiting structures.
- Oil passage designs include evenly distributed circular holes, radial slits and spiral grooves, differing in stress condition and manufacturability.
- Fixed-orifice pistons feature low cost yet non-adjustability; adjustable pistons offer high flexibility but come with complex sealing and higher costs.
- Two-stage valve systems and overflow channels are adopted to achieve non-linear damping and prevent bottoming.
- The future development trend leans toward active electro-hydraulic variable-cross-section pistons.
Full Text Excerpt
The piston of an automotive hydraulic shock absorber serves as the core working component of the entire damping system. Mounted at the end of the piston rod and submerged in hydraulic oil within the working cylinder, it reciprocates driven by the piston rod when the vehicle travels over uneven road surfaces. Hydraulic oil is forced to flow through the piston valve assembly, and the required damping force is produced via throttling resistance of the oil passing through the valve system.
Max auto parts specializing in the production of various shock absorber piston .We easy to do business, you can start working with us with sample order.We can also develop new moulds and customize according to your drawings.
What are MAX core advantages?
✅Direct manufacturer
✅Customization team
✅ Quality inspection team ,12-month warranty Worry-Free After-Sales Service
We adhere to strict factory quality inspection standards, all coilovers are 100% tested for damping tightness, spring toughness and height adjustment accuracy before leaving the factory.
Every product has stable quality and durable performance, and we provide official formal warranty service to fully protect customers’ rights and interests。
✅Robust packaging ensures products arrive intact at customers’ destinations.
With superior product performance, strict quality control and considerate service, contact us to get your customized quotation and place orders.