Alumina Sleeve for Shaft

Alumina Sleeve for Shaft Properties

Al2O3 Sleeve for Shaft Applications

• Vacuum Furnace Shaft Insulation
• Industrial Mixer Shaft Isolation
• High-Temperature Rotary Pump Barriers
• Lab-scale Reactor Shaft Alignment Guides
• Hot Gas Duct Supports

Al2O3 Sleeve for Shaft Usage Instructions

Usage Instruction:

• Installation: Slide onto cleaned shaft. The match ends against a fixed flange or a rotating joint. Use graphite paste for optimal thermal contact if necessary.
• Cleaning: Prefer an ultrasonic bath with neutral pH detergent.
• Storage: Room temperature, away from moisture.
• Maintenance: Inspect the inner surface for microcracks every 6 months, mainly when used in a vacuum environment.

1. Q: Can I order custom dimensions for rotary systems?
   A: Yes, lengths up to 1000mm and custom ID/OD pairs are available. Shaft-specific versions are our speciality.
2. Q: Is this ceramic sleeve resistant to acid or alkali?
   A: 99.5% alumina is highly inert and resists corrosion from most industrial chemicals, including HNO3 and NaOH.
3. Q: Does the sleeve fit high-speed rotation applications?
   A: For speeds <1000 RPM and appropriate clearance fitting, this ceramic sleeve insulates and supports rotating shafts effectively.
4. Q: Will the sleeve crack under thermal cycling?
   A: With low CTE (~8.0 × 10⁶⁻⁶/K), this product endures thermal cycling up to 100 cycles under standard use.
5. Q: What surface finishes are available?
   A: Raw sintered, sandblasted or polished finishes depending on required friction or sealing performance.