Alumina Bushing

Edgetech Industries, Advanced Ceramics Division supplies high-quality and competitive price advanced Alumina Bushing products.

SKU: O13-BG

Alumina Bushing, Al2O3 Ceramic Bushing

Ceramic bushings are ceramic tubes for industrial parts. Ceramic bushings can be used with industrial parts by welding, bonding, or metal embedding. Usually, ceramic bushings are used to protect equipment components. It can reduce equipment wear, and vibration, reduce noise, and have anti-corrosion effects. It can also facilitate the maintenance of mechanical equipment and simplify equipment structure and manufacturing processes. In valve applications, bushings are installed on the valve stem to reduce valve leakage and provide sealing. In bearing applications, the use of bushings can reduce wear between the bearing and the shaft box and prevent the increase of the gap between the shaft and the hole. Edgetech provides Alumina bushings with high hardness and mechanical strength, good wear resistance, high-temperature resistance, good electrical insulation, and good corrosion resistance.

Specifications of Typical Alumina Ceramics

Item	Unit	Al2O3
Physical Property
Color	\	Ivory
Density	g/cm3	3.7-3.9
Purity	%	95~99.8
Gas Permeability	\	0
Water Absorption		0%
Mechanical Properties
Vickers Hardness	GPa	12.3-17.2
Flexural Strength	MPa	300-380
Compressive Strength (HV0.5)	MPa	2000-2350
Elastic modulus	GPa	270-380
Fracture Toughness	MPam^1/2	3.5-4
Thermal Properties
The Max Working Temperature	℃	1650
Thermal Conductivity at room temperature	W/m·k	20-32
Coefficient of Thermal Expansion	10-6/℃	6.5-7.2
Thermal Shock Resistance	△T℃	200
Electrical Properties
Dielectric Strength	KV/mm	10-15
Dielectric Constant		9-10
Dielectric Loss Angle(1MHz)		0.0002-0.0003
Volume Resistivity	Ω·cm	>10¹⁴

The above chart just demonstrates the typical properties of common alumina ceramic we use to produce our alumina parts. Please notice that the properties of customized alumina parts vary due to different processing. Edgetech Industries, Advanced Ceramics Division provides alumina products according to your specified instructions or does its best to meet requirements.

Alumina Ceramic bushing types

-Multi-groove and capped bushings
-Notched bushings
-Tubular bushings
-Cylinder and cylindrical bushings

Packing

As a ceramic material, Alumina Bushing is quite fragile in a lot of cases. Our Alumina Ceramics are carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used, and vacuum packing is also engaged for some of the parts.