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High Cycle Durability Bearing Springs Fatigue Resistant Diaphragm Spring Pressure Plate

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High Cycle Durability Bearing Springs Fatigue Resistant Diaphragm Spring Pressure Plate

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Place of Origin : Sihong, China

Brand Name : Sunzo

Certification : CE/IATF16949/45001/14001/9001

MOQ : Negotiable

Price : Negotiable

Packaging Details : Carton

Delivery Time : Negotiable

Payment Terms : Negotiable

Material Composition : 50CrVA (1.05%C-0.8%V-0.25%Mo), 60Si2MnA (0.6%C-2.0%Si-1.0%Mn)

Hardness : HRC 45-50

Tensile Strength : 1800MPa

Elastic Limit : ≥1200MPa

Fatigue Life : >10⁷ cycles at 40% load

Preload Retention : >95% after 10⁶ cycles

Load Variance : ±3%

Load Multiplication : 2.5-5.2x

Max RPM : 25,000 RPM

Operation Frequency : up to 500Hz

Wall Thickness : ±0.005mm

Fillet Radius : R0.3-R0.8mm

Quenching Temp : 860°C (50CrVA), 870°C (60Si2MnA)

Tempering Temp : 420°C (50CrVA), 480°C (60Si2MnA)

Stack Configuration : 2-8 discs

Continuous Operation : 20,000 hours

Stress Concentration : Eliminated

Uniform Load : Yes

High-Speed Operation : Yes

Extreme Conditions : Yes

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Bearing Disc Spring Fatigue Resistance
Our Bearing Preload Disc Spring (grooved/grooveless series) exhibits exceptional fatigue resistance, engineered to excel in high-speed continuous bearing operation across precision machinery, automotive powertrains, and industrial spindles.
Ultra-High Cycle Durability
Engineered for high-speed continuous bearing operation in extreme conditions, these disc springs deliver reliable performance in demanding applications.
Optimized Geometric Design
  • Annular geometry with stress-relieved fillets (R0.3-R0.8mm)
  • Uniform wall thickness (±0.005mm) eliminates stress concentration points
  • Designed for high-frequency preload cycling up to 500Hz
Premium Material Construction
Material Composition Heat Treatment Properties
50CrVA 1.05%C-0.8%V-0.25%Mo Quenched at 860°C, tempered at 420°C HRC 45-50 hardness, 1800MPa tensile strength
60Si2MnA 0.6%C-2.0%Si-1.0%Mn Quenched at 870°C, tempered at 480°C Superior elastic limit (≥1200MPa)
Performance Specifications
Fatigue Life: Exceeds 10⁷ cycles at 40% of ultimate load
Preload Force Retention: >95% after 10⁶ compression-rebound cycles (per ISO 10243 standards)
Load Distribution: ±3% variance in parallel stacked configurations (2-8 discs)
Load Multiplication: 2.5-5.2x at equivalent displacement
Application Range
Ensures stable preload for high-speed bearings operating at up to 25,000 RPM, including:
  • Automotive transmission bearings
  • CNC spindle angular contact bearings
  • Industrial robot joint bearings
  • Automotive engine timing systems
  • Precision grinding machines
Field Validation
No measurable deformation or performance degradation after 20,000 hours of continuous operation in demanding industrial applications.

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