Bearing Disc Spring with 65Mn Carbon Steel, 50CrVA High-Strength Alloy, and SUS304 Stainless Steel for Optimal Preload Performance
Material selection directly impacts the preload stability, fatigue life, and environmental resilience of Bearing Preload Disc Springs (both grooved and grooveless series). Our engineering team has developed a specialized material portfolio tailored to diverse industrial operating conditions, ensuring each application receives optimal elastic performance and durability.
- 65Mn (Cost-Effective Carbon Steel): Boasting a tensile strength of 980-1180 MPa and excellent elastic recovery (≥85%), this manganese steel alloy delivers reliable performance for general industrial bearing pre-tightening. Ideal for standard temperature environments (-40°C to 120°C) in conveyor systems, pumps, and general machinery where moderate load cycling occurs.
- 50CrVA/60Si2MnA (High-Strength Alloy Steels): These chromium-vanadium and silicon-manganese alloys offer superior fatigue resistance (≥10⁷ cycles at 40% of ultimate strength) and high stiffness (Young's modulus 206 GPa). Engineered for heavy-load (up to 500 kN) and high-speed (≥10,000 RPM) bearing assemblies in automotive transmissions, wind turbine gearboxes, and precision machine tools.
- SUS304/SUS316 (Austenitic Stainless Steels): Providing exceptional corrosion resistance (passivation layer thickness ≥0.5μm) and chloride tolerance (SUS316: 5000 hours salt spray test per ASTM B117), these alloys excel in humid/chemical environments. Widely used in marine propulsion systems, food processing equipment, and pharmaceutical machinery where hygiene and rust prevention are critical.
- Inconel718 (Nickel-Based Superalloy): Withstanding continuous operating temperatures up to 650°C and maintaining 80% of room-temperature strength at 500°C, this superalloy is engineered for extreme thermal environments. Critical applications include aerospace engine bearings, gas turbine generators, and nuclear reactor coolant pumps where thermal stability is paramount.
All materials are precision-machined to complement the annular geometry of bearing disc springs, ensuring uniform load distribution (±3% load variation) and load multiplication efficiency (up to 4x force output with equivalent displacement) across parallel spring stacks.
Our materials undergo rigorous quality control protocols including ultrasonic flaw detection, hardness testing (HRc 42-52 per material grade), and mechanical property verification (tensile, yield, and impact strength). Surface treatments are selectively applied based on application needs: phosphating (5-15μm coating thickness) for enhanced wear resistance, black oxide for improved lubricity, and passivation for maximum corrosion protection.
Each material's mechanical properties are computationally matched to spring geometry using finite element analysis, ensuring optimal stress distribution under dynamic preload conditions. Our metallurgical engineers provide personalized material selection consulting, analyzing factors such as operating temperature range (-270°C to 800°C), load cycles (10³ to 10⁹), and environmental contaminants. For unique operating parameters, we offer custom alloy development with rapid prototyping capabilities, including powder metallurgy and heat treatment optimization.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.