Inconel718 Bearing Spring High Temperature Resistant Alloy For Aerospace
Inconel718 Bearing Spring High Temperature Resistant Alloy For Aerospace
Basic Properties
Place of Origin:
Sihong, China
Brand Name:
Sunzo
Certification:
CE/IATF16949/45001/14001/9001
Trading Properties
Minimum Order Quantity:
Negotiable
Price:
Negotiable
Payment Terms:
Negotiable
Product Summary
Inconel718 disc springs for aerospace bearing preload. High-temp resistant (650°C), exceptional fatigue life, and superior corrosion resistance. Custom grooved/grooveless designs for turbine engines and satellites.
Product Custom Attributes
Highlight
Inconel718 Bearing Spring
,Inconel718 clutch diaphragm spring pressure plate
,Aerospace clutch diaphragm spring pressure plate
Material Composition:
Ni-52%, Cr-19%, Fe-18%, Nb-5%
Operating Temperature:
-270°C To 650°C
Peak Temperature:
800°C
Tensile Strength:
1400 MPa
Young's Modulus:
180 GPa
Fatigue Life:
10⁷ Cycles
Preload Force Variation:
±5%
Load Multiplication:
4-5x
Load Distribution Variance:
±3%
Surface Coating Thickness:
8-12μm
Salt Spray Resistance:
1500+ Hours
Tolerance Class:
IT5
Dimensional Tolerance:
±0.02mm
Groove Depth Ratio:
0.4
Radial Stress Reduction:
30%
Surface Hardness:
HV 500-550
Maximum RPM:
15,000 RPM
Maximum Load:
800 KN
Stack Configuration:
2-6 Discs
Vibration Frequency Range:
10-2000Hz
Product Description
Detailed Specifications & Features
Inconel718 Bearing Disc Spring - High-temperature Resistant for Aerospace Bearing Preload
Aerospace high-temperature bearing systems—including aircraft turbine engines (e.g., CFM56, LEAP series), satellite reaction wheels, and rocket propulsion assemblies—operate under extreme thermal cycling (-270°C to 650°C), high vibration (10-2000Hz), and corrosive atmospheric conditions. Our Inconel718 Bearing Preload Disc Spring is engineered as a mission-critical elastic component to address these challenges.
Product Configurations
- Grooved Series: For high-speed precision applications up to 15,000 RPM
- Grooveless Series: For heavy-load static applications up to 800 kN
- Precision: Annular geometry with tolerance class IT5 (±0.02mm on critical dimensions)
Key Performance Metrics
| Parameter | Performance Specification |
|---|---|
| Thermal Stability | Sustains continuous operation at 650°C (peak 800°C); retains 80% tensile strength at 500°C, 70% at 650°C |
| Fatigue Resistance | Exceeds 10⁷ cycles at 40% ultimate strength; maintains stable preload force (±5% variation) |
| Load Multiplication | 4-5x force output in parallel stacks (2-6 discs); uniform load distribution (±3% variance) |
Material & Surface Engineering
Constructed from Inconel718 superalloy (Ni-52%, Cr-19%, Fe-18%, Nb-5%) with proprietary heat treatment cycle (solution annealing at 980°C + double aging at 720°C/620°C) to form γ" precipitates. Dacromet surface treatment (zinc-aluminum flake coating, 8-12μm thickness) provides superior oxidation resistance, passing 1500+ hours of neutral salt spray testing (ASTM B117).
Application-Specific Optimizations
- Turbine Engine Bearings: Grooved series with 6 equidistant radial grooves reduces radial stress by 30% during high-speed rotation
- Satellite Bearings: Grooveless design with shot-peened surfaces (HV 500-550) enhances resistance to micro-vibration-induced fatigue
Additional Technical Data Available: Preload force calibration data for specific engine models (e.g., GE9X) and thermal shock test results (1000 cycles between -200°C and 600°C).
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