Electrical-Insulating, Low-Expansion Silicon Nitride Balls – Lightweight & Durable Bearings

• Customization: Available
• Feature: Good Mechanical Strength
• Production Process: Dry Pressing
• Model NO.: 7-4
• Refractoriness (℃): 1770< Refractoriness< 2000
• Shape: Ball
• Type: Silicon Nitride
• Transport Package: Box
• Specification: Customization
• Trademark: Xinda
• Origin: China
• HS Code: 2850009090
• Production Capacity: 50, 000 PCS Per Month

Product Description

Product Parameter	Steel Bearing Ball	Silicon Nitride Bearing Ball
Density (g/cm³)	7.6	3.22
Vickers Hardness (HV)	700	1550
Thermal Expansion Coefficient (10/K)	12.3	3.6
Young's Modulus GPa	190	320
Comprehensive Comparison	Requires maintenance, short service life	Strong self - lubrication, long service life

About Us
Xinda Composite Material Tech ( Weihai) Co., Ltd. founded in 2022 , is located in beautiful coastal Weihai City, covering an area of 5430 square meters. I t is a technology enterprise integrating R & D, production and sales of carbon f iber and i ts composite products. The company has obtained ISO 9001 Quality System Certification and applied for many patents. The products developed and produced are widely used in the aerospace, electronic communications, carbon carbon composite materials, wind power blades, rail t ransit, shipbuilding, major infrastructure construction, auto parts, medical devices, high- end sports and leisure products and other f ields. Carbon f iber products realize the variety coverage of high- strength, high- strength medium model and high- strength high model carbon f ibers.
The R & D team of our company has been committed to the R & D of carbon f iber products for many years.  Many achievements have been made in the research and development of carbon f iber shaped parts in aerospace, rail t ransit, new energy, outdoor sports, and other f ields. Our products have been sold to more than 10 countries and regions such as Japan, Europe, the United States and Australia, and have won unanimous praise f rom customers in China and abroad.
In the future, our company will concentrate i ts technical strength to increase investment in the progressiveness, automation and intelligence of carbon f iber production equipment, with aim to improve production efficiency, expand production capacity, achieve energy- saving, environmental protection and green development, and enhance core competitiveness!
 

FAQ

  1,Are you a factory or a trading company?
     We are a professional manufacture, founded in 2022.

  2, How to place an order?
Inquire with us → Customize with drawings or samples → Inform us of usage scenarios → Receive our product design recommendations → Negotiate details → Confirm samples → Sign contract/pay deposit → Mass production → Goods ready → Settle balance/delivery → Further cooperation.

3,What about sample orders?
Relevant samples for different products are provided subject to availability, with up to one free sample per product offered, and shipping costs as well as tooling fees to be borne by the buyer.

4, What shipping methods are available?
Sea freight, China Express, and express shipping are available. Other shipping methods can also be arranged. Please contact us if you need another shipping route.

5,How long is the delivery production and shipping time?
The delivery time depends on the quantity of your order.

6,Some products are missing from my package. What should I do?
Please contact our support team. We will verify your order contents with the packaging and compensate or reship accordingly. We apologize for the inconvenience.

7,How to confirm payment?
We accept wire transfers, Documentary Letter of Credit, and other payment methods. Please contact us before making payment through other methods. Normally, 50% deposit and balance payment before shipment.