Description
Hybrid Ceramic Bearing
1. Product Name
Hybrid Ceramic Bearing (Si₃N₄ Ceramic Balls Type)
2. Product Material
• Inner and Outer Rings: High-carbon Chromium Bearing Steel (GCr15), 440C Stainless Steel
• Rolling Elements: High-purity Silicon Nitride (Si₃N₄) Ceramic
• Cage: Nylon PA66, Stainless Steel, Brass Alloy
• Seal Components: Nitrile Rubber (2RS), Stainless Steel Shield (ZZ)
3. Product Characteristics
• Excellent electrical insulation, effectively prevents electric corrosion on bearing raceways
• 30%-50% higher limit speed than traditional all-steel bearings, low centrifugal force
• Ultra-low friction coefficient, less heat generation, stable high-speed operation
• High hardness and superior wear resistance, 2-3 times longer service life
• Wide operating temperature range (-40℃ to 220℃), strong thermal stability
• Good corrosion resistance, rust-proof, suitable for harsh working environments
• High dimensional accuracy, low noise, smooth and stable rotation
• Lightweight ceramic rolling elements, reduced equipment energy consumption
4. Application Fields
• High-speed precision transmission components
• Motor spindle and rotor bearing systems
• Dust-free and vacuum working environments
• Corrosive medium working conditions
• High-temperature and high-wear industrial scenarios
• Electrical insulation required equipment
5. Application Industries
Semiconductor Manufacturing, New Energy Vehicles, Industrial Automation, Precision Machine Tools, Medical Equipment, Aerospace, Vacuum Pump & Valve, High-speed Servo Motors, Electronic Equipment, Wearable Intelligent Devices
6. Processing Difficulties
• Precision matching of metal rings and ceramic rolling elements, strict control of assembly clearance
• High-precision grinding and polishing of silicon nitride ceramic balls, ensuring roundness and surface finish
• Balanced processing of bearing cages, guaranteeing stable operation at ultra-high speed
• Dimensional accuracy control under high-temperature sintering and precision machining
• Consistent quality control of batch products, meeting international precision standards
7. Processing Flow
1. Raw Material Selection: Screening high-quality bearing steel/stainless steel and silicon nitride ceramic raw materials
2. Forming Processing: Forging of metal rings, dry pressing and sintering of ceramic rolling elements
3. Precision Machining: Grinding, lapping and polishing of rings and ceramic balls
4. Assembly: Precision assembly of rings, ceramic balls and cage
5. Quality Inspection: Dimensional accuracy, performance, clearance and dynamic balance detection
6. Surface Treatment: Sealing installation and anti-rust treatment
7. Packaging: Finished product inspection and vacuum packaging
8. Delivery Period
• Standard Specifications: 7-15 working days
• Customized Specifications: 20-35 working days (depends on customization complexity)
9. Standard Specifications
• Series: 6000, 6200, 6300, 6800, 6900 Series
• Precision Grade: P0, P6, P5
• Seal Type: Open type, 2RS rubber sealed, ZZ metal shielded
• Bore Diameter: 1mm-50mm
• Material Configuration: Bearing Steel Rings + Si₃N₄ Ceramic Balls; Stainless Steel Rings + Si₃N₄ Ceramic Balls
10. Custom Specifications
• Customized inner/outer diameter, width and non-standard dimensional parameters
• Special ceramic rolling elements (zirconia ZrO₂ optional)
• Custom cage materials and structures
• Special sealing solutions for high-temperature, vacuum and corrosive environments
• Custom precision grade (P4 ultra-high precision available)
• Personalized surface treatment and anti-rust technology
• Non-standard bearing structure design
