Dampers & Shock Absorbers

Professional technical guide to damper technology and ooxAuto solutions

How Dampers Work

Damper Assembly Cutaway

A damper is a hydraulic device that absorbs and dissipates the kinetic energy produced by vehicle vibrations. The piston rod moves back and forth inside the cylinder in response to suspension movements, forcing hydraulic fluid through precision-engineered orifices.

Energy Conversion

Converts vibration energy into heat energy

Hydraulic Flow

Fluid flows through valves creating resistance

Damping Force

Different forces on compression and rebound cycles

Damping Cycle

Dampers function through two phases: compression (when suspension compresses) and rebound (when suspension extends). Each phase has optimized hydraulic valving to control the rate of energy dissipation, ensuring vehicle comfort and stability.

COMPRESSION DAMPING

Force generated when suspension compresses (Py)

REBOUND DAMPING

Force generated when suspension extends (Pf)

Key Damper Components

Piston Rod

  • Material: 35# / 45# / 40Cr steel (not stainless)
  • Plating: Micro-crack chromium, 15-20μm total thickness
  • Hardness: ≥HV900 for optimal durability

Seals & Gaskets

  • Multi-lip seals: High pressure, low friction
  • Dual-lip seals: Excellent wear resistance
  • Material: Fluoroelastomer (FKM) rated to 200°C
Piston Rod Detail

Working Cylinder

Precision seamless steel tube per GB/T3639 and GB/T8713 standards

  • • Straightness: 0.4mm/1000mm
  • • Bore tolerance: H8
  • • Surface finish: Ra 0.4

Damper Fluid

Specially formulated hydraulic oil with precision additive package

  • • High viscosity index
  • • Excellent anti-foam properties
  • • Superior anti-wear performance

Piston Assembly

Powder metallurgy construction with optimized flow characteristics

  • • Iron-base sintered metal
  • • PTFE rings for low friction
  • • Precision valve design

Performance Parameters

Damping Force Characteristics

Force output varies with rod velocity and cycle phase

  • Compression Force (Py): Speed-dependent
  • Rebound Force (Pf): Speed-dependent
  • Optimized for comfort and stability

Dimensional Specifications

Critical measurements for proper installation

  • Lmax: Maximum extended length
  • Lmin: Minimum compressed length
  • Stroke (S): Total travel distance

Mounting Requirements

Precise mounting geometry critical for performance

  • Top mount type and height
  • Bottom bracket design
  • Bracket hole spacing/diameter

ooxAuto Damper Lines

L4

Plus Shocks & Struts

Sport-tuned damping for improved handling and responsive control

  • Enhanced valving for better response
  • Intermediate performance level
L4 Plus Shocks

Ideal For:

  • • Spirited daily driving
  • • Enhanced handling needs
  • • Performance enthusiasts
  • • Balanced comfort and control
L5

Adjustable Damping Shocks

Professional-grade 3-stage adjustable damping for customized performance

  • 3-stage adjustment capability
  • Track-ready performance
L5 Adjustable

Ideal For:

  • • Racing and motorsports
  • • Track day events
  • • Professional tuning
  • • Advanced customization

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