Custom Precision Alumina Ceramic Rod for Industrial Wear Resistant Applications

﹡Product Overview

Our precision-engineered alumina (Al₂O₃) ceramic rods are designed for extreme wear resistance, thermal stability, and electrical insulation in demanding industrial environments. Custom diameters, lengths, and tolerances available for OEM applications.

﹡Key Technical Specifications

✅ Material: 99.5% Alumina (Al₂O₃) – High purity, low porosity

✅ Density: 3.9 g/cm³ – Dense, durable structure

✅ Flexural Strength: 300–400 MPa – Withstands heavy loads

✅ Hardness: 1,500 HV (Mohs 9) – Superior abrasion resistance

✅ Max Operating Temp: 1,600°C (2,912°F) – Continuous use

✅ Thermal Shock Resistance: ΔT >500°C (Water quenching test)

✅ Dielectric Strength: 15–20 kV/mm – Excellent electrical insulation

✅ Surface Finish: Polished (Ra <0.1µm) or as-fired (Ra 0.5µm)

✅ Standard Sizes: Diameter: 2–50mm (±0.02mm tolerance). Length: 10–500mm (custom up to 1,000mm)

﹡Industry Applications

1. Industrial Machinery & Automation

Wear-resistant guide rods for linear bearings – 10× lifespan vs. steel

Textile machine components – Resists fiber abrasion

2. Semiconductor & Electronics

Plasma-resistant actuator shafts in etch/PVD chambers

Wafer handling arms – Non-contaminating, static-free

3. Chemical Processing

Pump shaft sleeves – Corrosion-resistant in acid/alkali environments

Valve stems – Zero galvanic corrosion

4. Medical & Laboratory Equipment

Precision surgical tool guides – Biocompatible (ISO 6474)

Analytical instrument probes – Chemically inert

5. Energy & Automotive

Fuel cell stack components – High-temperature stability

Sensor housings – Thermal cycling resistant

﹡Why Choose Alumina Rods?

1. Unmatched Wear Resistance – Lowest friction coefficient among technical ceramics

2. Precision Machining – Diameter tolerance ±0.01mm

3. Custom Solutions – Tapered, threaded, or grooved designs

4. Cost-Effective – Eliminates lubrication in moving parts

﹡Production process

1. Grind and crush the raw materials to be slurry or powder

2. se-different method to making the slurry or powder into semi-finished products

3. Put the semi-finished products into the kiln for dewaxing and sintering;

4. After forming and sintering, Ceramic Sleeves products can also be processed by subsequent CNC precision machining according to the drawing requirements. Then Q/C test.

5. Finally package Ceramic Sleeves by bubble paper or cartons and place it on tray for delivery

﹡Certifications

﹡Company

Yixing Shengda Refractory Ceramic Co, Ltd. was established in Yixing City, China in 1995, witha production area of over 10,000m2. lt is an enterprise specializing in the production of aluminaceramic,zirconia ceramic,slicon nitride, silicon carbide and other precision ceramic products. 

And we also produce ceramic band heaters, ceramic terminal block, cordierite and mullite ceramic parts an other ceramic products.

﹡Ceramic Properties