Precision Thickness Shock Valve Shims for Accurate Damping Adjustment

Q: What thickness tolerance can I expect on a precision shim?

Standard precision tolerance is ±0.03mm, which is approximately 20% of material thickness for typical gauges. For ultra-critical applications, tighter tolerances are achievable through post-process sorting or grinding — please specify your tolerance requirement during quotation for a capability assessment and cost impact analysis.

Q: How does thickness precision affect damper dyno results?

Since damping force varies with the cube of shim thickness, even small tolerance improvements produce measurable dyno consistency gains. For example, reducing thickness tolerance from ±0.05mm to ±0.03mm on a 0.3mm shim reduces the damping force variation window by approximately 40%. This directly translates to more consistent damper dyno curves.

Q: Can you match shims to a specific thickness for matched-pair damper production?

Yes. We can sort and match shims within even tighter bands than our standard tolerance for matched-pair damper applications. This service adds a small per-piece cost but eliminates left-right damper mismatch, reducing warranty risk and improving end-customer satisfaction.

Q: What is your process capability (Cpk) for thickness?

We maintain Cpk ≥ 1.33 for thickness as a standard quality metric, with Cpk ≥ 1.67 achieved for established production programs. Process capability data is available for new part qualification and ongoing SPC reporting.

Q: Do you maintain thickness consistency across large production volumes?

Absolutely. With 500,000 pcs monthly capacity and IATF16949-governed process control, our thickness consistency is maintained from the first piece to the last across production batches. SPC charts track thickness trends in real-time, with automatic intervention if any drift toward control limits is detected.