SC0893 Silicon Carbide Bearing (SiC Bearing)

Silicon Carbide Bearing Description

Silicon Carbide (SiC) is a lightweight ceramic material that exhibits high mechanical strength, high thermal conductivity, low thermal expansion and resistance to acid corrosion.

Silicon carbide is an appropriate material for sealing rings and bearings. It shows satisfactory corrosion resistance, maintains high mechanical strength at elevated temperatures and offers measured wear resistance. We supply rings, bearings and additional SiC components manufactured from SiC.

Silicon Carbide Bearing Specifications

Reaction-bonded & Sintered SiC Bearings

Silicon carbide ceramics retain their high mechanical strength up to temperatures of 1 400°C. They exhibit a higher level of chemical corrosion resistance than other ceramics. Stanford Advanced Materials (SAM) offers a complete family of high-density silicon carbide bearings. These materials have the following properties:

Applications of Silicon Carbide Bearings

Silicon carbide bearings are employed in applications that require specified erosion and abrasion performance. They are utilised in spray nozzles, jet nozzles and cyclone components.

Packaging of Silicon Carbide Bearings

Our silicon carbide bearings are handled with care to minimise damage during storage and transport, thereby maintaining the quality of our products in their original condition.

FAQs on Silicon Carbide Bearings

Q1: What are the primary properties of silicon carbide bearings?

A: The primary properties include a hardness of 26 GPa (measured under specified conditions), wear resistance as determined by standard test methods, a thermal conductivity ranging from 125 to 150 W/m K and a thermal expansion coefficient of approximately 4.3–4.4 x 10^-6/°C. In addition, they exhibit chemical inertness and maintain performance at elevated temperatures.

Q2: What sizes and configurations are available for silicon carbide bearings?

A: Silicon carbide bearings are manufactured with inner diameters from 4 to 100 mm, outer diameters defined as the inner diameter plus an additional 5 to 40 mm and lengths from 4 to 34 mm. They are available as radial bearings, axial bearings and in custom configurations to meet defined application parameters.

Q3: How do silicon carbide bearings compare to conventional metal bearings?

A: Silicon carbide bearings exhibit higher measured wear resistance, greater temperature stability and improved chemical resistance compared to conventional metal bearings. They may, however, exhibit increased brittleness and incur a higher cost. The optimal choice depends on the specific operational requirements.