Precision Si3N4 ceramic ball for mechanical seals

Precision Si3N4 ceramic ball for mechanical seals

Si3N4 Ceramic bearings balls is generally assembled in bearing for application in high-tech industry such as aerospace, national defense, chemical industry, metallurgical, medical, food, oil plant, electronic etc.

Specification: 

1. 9% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration.

2. 44% larger elastic modulus, which means less deformation under load.

3. Harder with Rockwell hardness as 78.

4. Smaller friction coefficient.

5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature.

6. Superior surface finish can be achieved, Ra could be 4~6 nm.

7. Can endure high temperature with high hardness and strength up to 1050ºC.

8. Never rust, and can roll without lubrication.

9. More corrosion resistant than steel.

10. Free of metal contamination.

11. Non-magnetic.

12. Electric isolation.

13. No adhesive-wear.

All above combination makes Si₃N₄ 

Size Range: 0.4mm~140mm

Grade: G3~G100

Application is as under:

Si₃N₄ ball can be used in all bearings with special requirement: high speed bearing, high precision bearing; vacuum bearing; high/low temperature bearing, non-magnetic bearing, high precision ball screw; Si₃N₄ ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump.

Silicon nitride/si3n4 ceramic balls: 

1.high-speed operation 
2.self-lubricating 
3.high temperature 
4.anticorrosion

Please provide following information when inquiry:

1. Size

2. Grade

3. Quantity

Packing: Standard export carton

Shipping: By vessel or plane from any Chinese port

Provide sample for test before order

Provide competitive price

Arrange prodcution on time

Control product quality and delivery time

Provide finished products and packing photos

Book the earliest and fast vessel

Provide original document and original certificate

After sale serivce

DKJL refractories exporting company is one of the most professional suppliers of refractories in China.The main products are refractory bricks,thermal insulation material,heating elements, industrial ceramics and scientific instruments.They are available in various size and shapes.Our products enjoy a good reputation for their excellent quality and service in domestic and international markets.

MOQ: 2000pcs

Inquiry factors: Working temp, Density, Size, Quantity

Contact person: Ms. Nicole

Skype: nicole_xijuan   Tel: 86-10-13401090766