Industrial Silicon Nitride Stepped Sleeve: Flanged High-Precision Bearing Housing Assembly

Product Introduction

This product is an industrial ceramic stepped sleeve manufactured from high-purity silicon nitride (Si3N4), specifically designed for high-end mechanical equipment and extreme operating conditions. It features a pure black color with a fine, uniform matte texture, highlighting the material's high density and exceptional wear resistance. The innovative stepped design incorporates a wide flanged rim at the top, a cylindrical main body, and a precision-machined coaxial stepped bore inside. All components feature accurate dimensions and smooth, flat contact surfaces, with machining accuracy reaching micrometer levels to ensure perfect fit in precision assemblies. This silicon nitride ceramic stepped sleeve perfectly combines superior material properties with innovative structural design, making it an ideal choice for upgrading modern high-end equipment.

Core Advantages

• Exceptional Wear Resistance: Hardness above HRA 92, wear rate only 1/10 of bearing steel

• Outstanding High-Temperature Performance: Can operate continuously at 1400°C, with instantaneous temperature resistance up to 1600°C

• Comprehensive Corrosion Resistance: Withstands strong acids, alkalis, and various organic solvents

• Excellent Mechanical Properties: Compressive strength >2000 MPa, flexural strength >600 MPa

• Self-Lubricating Characteristics: Friction coefficient below 0.15, enabling oil-free operation

• Lightweight Design: Density of 3.2 g/cm³, over 60% weight reduction compared to metal materials

Typical Applications

• High-speed electric spindle ceramic bearing housings

• High-pressure sealing chambers for chemical machinery

• Multi-stage positioning components in precision instruments

• Aerospace transmission systems

• Insulating structural parts for new energy equipment

Specifications Table

Manufacturing Process

Raw Material Selection → Nano-level Ball Milling → Spray Granulation → Bidirectional Press Forming → Isostatic Pressing → Gas Pressure Sintering → Ultrasonic Flaw Detection → CNC Precision Grinding → Laser Dimensional Inspection → Vacuum Packaging and Storage

Usage Instructions

1. Pre-Installation Treatment: Clean the mounting surfaces with absolute ethanol to ensure dust-free assembly.

2. Flange Mounting: Fix using specialized clamps through the evenly distributed mounting holes on the flange.

3. Stepped Bore Adaptation: Select the corresponding stepped bore size based on the shaft diameter to ensure optimal fit.

4. Temperature Adaptation: Consider differences in thermal expansion coefficients during installation and reserve appropriate clearance.

5. Regular Maintenance: Check the fit clearance every 500 hours of operation.

After-Sales Service

We provide comprehensive technical support and after-sales service. The product comes with an 18-month warranty and lifetime maintenance. 7x24 technical consultation is available with a 48-hour emergency response. On-site installation guidance and regular follow-up services are provided.

FAQ

• Q: What are the main advantages of the stepped bore design?
  A: It allows adaptation to multiple shaft diameters, reduces parts inventory, and improves assembly flexibility.

• Q: Is custom non-standard design supported?
  A: Full customization is supported. Parameters like flange dimensions and stepped bore specifications can be adjusted according to customer requirements.

• Q: How does it perform in humid environments?
  A: Silicon nitride material has excellent hydrolysis resistance, suitable for long-term use in high-humidity environments.