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99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
Specifications
Certification :
ISO
Color :
White or ivory
Applications :
Electrical insulation, mechanical support, high temperature environments
Price :
1$~100$
Packaging Details :
Wooden Cages Or Carton Box
Coefficientofthermalexpansion :
5.2 - 7.9 x 10⁻⁶/°C
Operating Temperature :
Up to 1600°C
Surface Roughness :
Ra0.4±0.1μm
Hardness :
Mohs 9
Place of Origin :
Handan
Material :
Alumina Oxide (Al2O3)
Tensile Strength :
28 kpsi
Supply Ability :
2000 Pieces Per Week
Compressive Strength :
300 - 350 kpsi
Chemical Resistance :
Excellent against acids and alkalis
Tolerance :
Up to ±0.03mm
Brand Name :
Norcera
Product Name :
Alumina Ceramic Guide Roller
MOQ :
1 Piece
Wear Resistance :
High
Payment Terms :
T/T
Manufacturing :
Sintering
Density :
3.7 g/cm³
Delivery Time :
10-15 Work Days
Thermal Conductivity :
18.0 - 28.0 W/mK
Electrical Insulation :
High
Description

Custom Hollow Solid Alumina Ceramic Roller for High‑Temperature Sintering Equipment


Alumina ceramic part is produced by firing a tightly packed powder form of Al2O3 which includes some binder material. Commercially available grades range from 90% up to 99.95% with the higher purity generating somewhat higher hardness. Alumina Ceramics are the most highly regarded and widely used of the ceramic products. It is non-conductive, resistant to corrosion, and are perfect for electrical insulation. Alumina Ceramic has proven to be the best ceramic for protection of vital electrical components. It can be processed as tubing, sheets, bars, rods, discs, and many other forms depending on the requirements of the project.

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

Alumina half‑ring is a precision structural ceramic part made of high‑purity alumina, processed by isostatic pressing, high‑temperature sintering and fine machining. It features a semi‑circular split‑ring geometry, designed for assembling and lining circular chambers, furnace tubes and heating modules.

Boasting excellent high‑temperature resistance, outstanding thermal‑shock performance and superior chemical inertness, the alumina half‑ring can withstand long‑term service under high‑heat and corrosive atmosphere environments. Low thermal conductivity provides thermal insulation effect, while high mechanical hardness and wear resistance extend service life under cyclic temperature changes.

The split half‑ring structure brings great convenience for installation, maintenance and replacement without disassembling the whole furnace tube. Tight machining tolerance ensures good fitting accuracy when multiple half‑rings are spliced into a full circle.

Commonly used as furnace insulation segments, inner lining spacers, supporting blocks and shielding components for tube furnaces, sintering furnaces and thermal treatment equipment. Custom‑made outer diameter, inner diameter, thickness and arc size are available upon customer drawings and samples.


99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller


Alumina Oxide (Al2O3) Properties:

◆ High Hardness
Strong wear resistance, durable and not easy to wear.


◆ Excellent Thermal Conductivity
The thermal conductivity at room temperature is 30~40W/(m·K), which is higher than that of steel, copper and aluminum.


◆ Good Chemical Stability
Resistant to acid, alkali and salt corrosion.


◆ High Temperature Stability
Withstands 1600℃ high temperature and has high temperature stability.


99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

Chemical Formula Al2O3
Mechanical Density 3.7 gm/cc
Hardness

2000 Knoop

Tensile Strength 28 kpsi
Modulus Of Elasticity 41 - 46 x 106 psi
Flexural Strength 51 kpsi
Compressive Strength 300 - 350 kpsi
Poissons Ratio 0.21
Fracture Toughness 4 - 5 MPa m½
Electrical Dielectric Strength 212 - 220 ac V/mil
Dielectric Constant 9.3 (@ 1 MHz)
Volume Resistivity > 1014 ohm-cm
Thermal Coefficient Of Thermal Expansion 5.2 - 7.9 x 10⁻⁶/°C
Thermal Conductivity 18.0 - 28.0 W/mK
Specific Heat 0.21 cal/g °C
Shock Resistance 300 °C Diff.

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

Typical Applications Include:

Wear resistant components,

High pressure nozzles,

Thermocouple tubes,

Electrical Insulators,

Corrosive labware,

Furnace fixtures,

Ballistic armor,

Thread guides,

Laser Tubes,

Pump seals.

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

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99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

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Product Detail
Certification :
ISO
Color :
White or ivory
Applications :
Electrical insulation, mechanical support, high temperature environments
Price :
1$~100$
Packaging Details :
Wooden Cages Or Carton Box
Coefficientofthermalexpansion :
5.2 - 7.9 x 10⁻⁶/°C
Contact Supplier
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller
99% Solid Al2O3 Custom Ceramic Parts High Hardness Alumina Ceramic Guide Roller

Norceramic New Materials (Beijing) Co., Ltd

Verified Supplier
1 Years
beijing, beijing
Since 2017
Business Type :
Manufacturer, Distributor/Wholesaler
Main Products :
Custom Ceramic Parts, Full Ceramic Bearing, Precision Ceramic Balls
Employee Number :
80~120
Certification Level :
Verified Supplier
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