Shock Valve Shims & Support Washers | High-Precision Stainless Steel Stamping Parts for Automotive Suspension Systems
Key Attributes
| Press: | 40-60T | Diameter: | Varia (comunemente da 10 mm a 30 mm) |
| Standard: | GB/DIN/JIS/ANSI | Inspection: | IQC, IPQC, FQC, QA |
| Manufacturer: | Fornitori OEM o aftermarket | Shape: | Girare |
| Service: | OEM disponibile | Temperatureresistance: | Fino a 300°C |
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.
| Feature | Carbon Steel (Q235/C67S) | Stainless Steel (SUS301/304) | Sandvik 20C / 7C27Mo2 |
| Fatigue Life | Moderate | High | Ultra-High |
| Corrosion Resistance | Low (Needs coating) | Excellent | Excellent |
| Application | Standard Passenger Cars | Performance Tuning | Professional Racing |
| Hardness | 40-45 HRC | 48-52 HRC | Up to 55 HRC |
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 Sandvik 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.
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