Shock Valve Shims & Support Washers | High-Precision Stainless Steel Stamping Parts for Automotive Suspension Systems

1. Product Introduction

Our Shock Valve Shims and Support Washers are high-precision stamping components engineered for hydraulic damping control. Manufactured according to strict OEM specifications (e.g., S-27 series), these shims regulate fluid flow within the shock absorber, ensuring optimal damping force and vehicle stability.

Key Specifications
Thickness: 0.10mm - 2.5mm (Tolerance: +/-0.01mm).
Outer Diameter (OD): 10mm - 60mm.
Process: Precision Stamping, Deburring, Surface Polishing.
Standard: ISO 9001 / IATF 16949 compliant.

2. Material Comparison

Choosing the right material is critical for fatigue resistance and performance under high-frequency vibration.

3. Installation Precautions 

To ensure the longevity of the damping system, follow these technical guidelines:

Stacking Order: Strictly follow the damping curve design. Even a 0.05mm deviation in thickness can alter the damping force by 15-20%.

Cleanliness: Ensure no metal burrs or oil sludge remain on the shim surface to prevent valve leakage.

Flatness Check: Ensure the Support Washer is perfectly flat to provide a stable base for the shim stack.

4. FAQ & Solutions

Q1: Why is there abnormal noise (clicking) after installing new shims?

A1: This usually indicates a gap in the shim stack or insufficient pre-load. Solution: Verify the tightening torque of the piston bolt and check if the support washer (e.g., 24120901 series) is seated correctly.

Q2: How to prevent shim fatigue failure under high temperatures?

A2: Shock absorbers can reach over 120°C during heavy use. Solution: Use 7C27Mo2 or SUS301 stainless steel with high heat-treatment stability to maintain spring rate.

5. Technical Application Scenarios

OEM Replacement: Precise fit for standard automotive shock absorbers.

Off-Road Tuning: Custom shim stacks for increased rebound/compression resistance.

Industrial Damping: Used in heavy machinery hydraulic cylinders.