SUNZO Custom Disc Springs (Belleville Washers) in 50CrVA Alloy Steel for 10,000 psi Hydraulic Seals with Engineered Preload Stability
Product Details
| Preload Tolerance: | ±2% | Operating Pressure: | 500 Psi To 10,000 Psi |
|---|---|---|---|
| Helium Leak Rate: | ≤1×10⁻⁶ Std Cm³/s | Dish Height-to-thickness Ratio: | 0.4-1.2 |
| Stiffness Profiles: | 5-50 N/mm | Load Capacity: | Up To 20 KN |
| Temperature Range (50CrVA): | -40°C To 150°C | Tensile Strength: | 1,800 MPa |
| Fatigue Life: | >10⁶ Cycles At 70% Yield Strength | Salt Spray Resistance: | 1,000+ Hours |
| Chloride Ion Tolerance: | Up To 10,000 Ppm | Temperature Range (Inconel 718): | -270°C To 650°C |
| Phosphating Thickness: | 8-12μm | Dacromet Coating Thickness: | 5-8μm |
| Coefficient Of Friction: | <0.15 | Thermal Cycling Range: | -50°C To 200°C |
| Thermal Cycles: | 1,000 Cycles | Force Tolerance: | ±3% |
| Electroless Nickel Plating: | 50μm Thickness | Axial Space Efficiency: | 40% Smaller Footprint |
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Product Description
- 50CrVA Alloy Steel: Ideal for industrial hydraulic systems operating at -40°C to 150°C, offering tensile strength 1,800 MPa and fatigue life >10⁶ cycles at 70% yield strength.
- SUS316 Stainless Steel: Recommended for marine/chemical environments with 1,000+ hours salt spray resistance (ASTM B117) and chloride ion tolerance up to 10,000 ppm.
- Inconel 718 Superalloy: Engineered for extreme conditions (-270°C to 650°C), providing creep resistance under sustained loads and compatibility with phosphate-ester hydraulic fluids.
- Phosphating: Zinc-manganese coating (8-12μm) for enhanced lubricity and corrosion protection in mineral oil systems
- Dacromet Coating: Chromate-free zinc-aluminum flake finish (5-8μm) with 1,500+ hours salt spray resistance per ISO 9227
- PTFE Impregnation: For low-friction applications requiring coefficient of friction <0.15 in dynamic sealing scenarios
- Mobile Hydraulics: Compact springs for excavator boom cylinders with temperature cycling resistance (-30°C to 120°C)
- Offshore Oil & Gas: Subsea wellhead seals using Inconel 718 with electroless nickel plating (50μm thickness)
- Aerospace Hydraulics: Weight-optimized springs for flight control systems meeting MIL-DTL-25987 specifications
- Load-deflection testing per ISO 16148 (±3% force tolerance)
- Ultrasonic flaw detection (ASTM E164) for subsurface defects
- Thermal cycling (-50°C to 200°C) for 1,000 cycles to verify preload retention
- Material traceability from raw material lot to final inspection (EN 10204 3.1 certification)
Product Highlights
SUNZO custom disc springs ensure precise preload for hydraulic seals, offering high durability (50CrVA, SUS316, Inconel 718) and certifications (ISO 16148, EN 10204). Compact, efficient, and tailored for critical applications.
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