Ningbo XiaYi Electromechanical Technology Co.,Ltd.
| Press | 40-60T |
| Diameter | Varies (commonly 10mm To 30mm) |
| Standard | GB/DIN/JIS/ANSI |
| Inspection | IQC, IPQC,FQC,QA |
| Manufacturer | OEM Or Aftermarket Suppliers |
| Shape | Round |
| Service | OEM Available |
| Temperatureresistance | Up To 300°C |
| Brand Name | XIAYI |
| Certification | ISO9001:2008 |
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Product Specification
| Press | 40-60T | Diameter | Varies (commonly 10mm To 30mm) |
| Standard | GB/DIN/JIS/ANSI | Inspection | IQC, IPQC,FQC,QA |
| Manufacturer | OEM Or Aftermarket Suppliers | Shape | Round |
| Service | OEM Available | Temperatureresistance | Up To 300°C |
| Brand Name | XIAYI | Certification | ISO9001:2008 |
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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Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
1500000-5000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust... Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust...
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