silicon carbide shaft
Product Overview
A Silicon Carbide Shaft is a precision ceramic shaft manufactured from high-performance reaction-bonded or sintered silicon carbide material. It represents a revolutionary alternative to metal shafts in the most extreme operating conditions.
This product combines exceptional wear resistance, superior corrosion resistance, high rigidity, and low density, and is specifically designed to solve shaft application challenges in high-speed, highly corrosive, high-temperature, and ultra-clean environments.
Material and Properties
Core Material: Reaction-Bonded / Sintered Silicon Carbide
Extreme Hardness & Wear Resistance SiC is one of the hardest materials in the world, second only to diamond and CBN. This gives it super resistance to abrasive wear, resulting in a service life far exceeding that of tool steel, stainless steel, and other metals.
Excellent Chemical Corrosion Resistance
Resists corrosion from most strong acids (e.g., hydrochloric, sulfuric, nitric), strong alkalis, and oxidizers. It remains stable even in aqua regia. Its chemical stability is much higher than that of stainless steel.
High Stiffness & Low Density
High elastic modulus means minimal bending deformation under load, maintaining extremely high rotational accuracy.
Density is only about 3.1 g/cm³, approximately 40% that of steel, significantly reducing the inertia of rotating components, making it suitable for high-speed applications.
Superior High-Temperature Performance
Maintains its strength and shape at temperatures up to 1600°C, without oxidizing or softening, far outperforming metals.
Low Thermal Expansion & High Thermal Conductivity
Low coefficient of thermal expansion ensures good dimensional stability with temperature changes.
Good thermal conductivity helps rapidly dissipate frictional heat, preventing thermal cracking.
Technical Specifications
| Parameter | Value |
| Density | 3.10-3.13 g/cm³ |
| Flexural Strength | 550 MPa |
| Thermal Conductivity | 120 W/m*K |
| Max Operating Temp | 1650°C |
Application Scenarios
The Silicon Carbide Shaft is the ideal choice for the following high-end and demanding applications:
Chemical & Petrochemical Industry: Used as pump shafts in magnetic drive pumps and metering pumps handling highly corrosive and abrasive slurries, offering complete non-magnetic and corrosion-resistant properties.
High-Temperature Industrial Furnaces: Used as rollers and conveyor shafts in sintering furnaces and heat treatment furnaces.
Semiconductor Manufacturing: Used in wafer handling robots, CMP equipment, and etch machines for ultra-clean, metallic-ion-free environments.
Water Treatment & Environmental Protection: Used as mixer shafts in harsh wastewater and sludge treatment equipment.
High-End Laboratory Equipment: Analytical instruments requiring high stiffness, low thermal deformation, and corrosion resistance.
Why Choose Our Products
Professional Team: With the brand names ZXSQ and CSQ, we hold eleven invention patents and maintain a professional team dedicated to providing customized bearing solutions. Since 1982, we've accumulated over 40 years of expertise in ceramic bearing material research and development.
Manufacturing Strength: Our fully automated production line has an annual capacity of 3 million sets of P5 and P4 precision bearings. Equipped with industry-leading firing technology including a Swedish ABB hot isostatic sintering furnace (HIP), we achieve firing temperatures exceeding 2000℃.
Frequently Asked Questions
Who are we?
We are a Beijing-based factory with over 40 years of experience in ceramic bearing production, maintaining cooperative relationships with domestic and international companies.
How do we guarantee quality?
We implement strict quality control including pre-production samples, precise inspections, and double-layer packaging (foam + carton) to ensure product integrity.
What products do we offer?
Our product range includes ceramic deep groove ball bearings, angular contact bearings, hybrid bearings, linear bearings, and various ceramic balls.
Why choose us over competitors?
As an integrated manufacturer with three factories, we combine advanced production technology with quality inspection capabilities to deliver superior products with reliable lead times.
What services do we provide?
We offer high-quality products with full customization options, including sample provision for customer verification.
Contact Us
We specialize in bearing research, production, and sales, committed to providing quality products and technical services. Using premium materials and meticulous craftsmanship, we create value through customer-focused solutions and reliable after-sales support. Contact us to discuss your requirements and potential cooperation.
