Alumina Ceramic Guide Bushings: Core Guiding Components For Precision Machinery

Alumina Ceramic Guide Bushings: Core Guiding Components for Precision Machinery

Introduction
Alumina ceramic guide bushings are precision mechanical components made from high-purity alumina (Al₂O₃) material, manufactured through advanced isostatic pressing and high-temperature sintering processes. This product features extremely high hardness, excellent wear resistance, and stable chemical properties, maintaining long-term dimensional stability and guiding accuracy under harsh working conditions, making it an indispensable key guiding component in precision mechanical equipment.

Applications

• CNC Machine Tools: Spindle guide bushings, guideway sliders, feed system positioning bushings

• Automation Equipment: Robot guide bushings, conveyor line positioning bearings, precision transmission mechanisms

• Measuring Instruments: CMM guide bushings, optical instrument positioning bearings, precision testing equipment

• Automotive Manufacturing: Engine assembly guide bushings, transmission positioning bearings, automated production lines

Advantages

1. Super High Hardness: Vickers hardness ≥1700HV, wear resistance is more than 10 times that of bearing steel

2. Extremely Low Friction Coefficient: Friction coefficient only 0.05-0.1, reducing power loss

3. Excellent Dimensional Stability: Thermal expansion coefficient 7.2-8.0×10⁻⁶/℃, ensuring accuracy at high temperatures

4. Corrosion Resistance: Resists various cutting fluids, lubricants, and chemical media

5. Long Service Life: 5-8 times longer service life than metal bushings under same working conditions

Specification Parameters Table

Manufacturing Process
Raw material selection → Formula optimization → Spray granulation → Isostatic pressing → High-temperature sintering → Precision grinding → Laser measurement → Ultra-precision machining → Quality inspection → Anti-rust packaging

Usage Instructions

1. Clean mating surfaces before installation, remove oil stains and impurities

2. Use special installation tools, avoid direct impact

3. Ensure proper fit clearance when matching with shaft (recommended H6/g6)

4. Regularly check wear condition, inspect every 2000 operating hours

5. Operating temperature range: -50℃ to 1400℃

After-Sales Service

1. 18-month quality guarantee period

2. 24/7 technical support from professional team

3. Free selection consultation and installation guidance

4. Establish customer usage files, regular maintenance reminders

5. 36-hour response for emergency orders

FAQ

1. Q: What level of dimensional accuracy can the product achieve?
   A: Inner diameter accuracy can reach IT4 grade, roundness error ≤1.5μm

2. Q: Can it be used without lubrication?
   A: Yes, alumina ceramic has self-lubricating properties and can work under oil-free conditions

3. Q: What is the maximum allowable operating speed?
   A: Maximum operating speed can reach 30000rpm, depending on working conditions

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