high quality 3.969mm 6mm 7mm silicon carbide precision black car ceramic bearing ball price

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US $0.1-0.2 / Pieces | 1 Piece/Pieces (Min. Order)
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Overview
Quick Details
Place of Origin:
Shanghai, China (Mainland)
Brand Name:
OEM
Model Number:
7mm
Material:
Ceramic
color:
black
material:
silicon carbide
GRADE:
G3 G5 G10
HARDNESS:
1500
DENSITY:
3.23g/m3
Supply Ability
Supply Ability:
10000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
Standard package or by customer's request.
If you are interested in this product or just want to know more about ceramic products, never hesitate to contact us.
We are looking forward to developing business relationships with you.
Port
shanghai
Product Description

high quality 3.969mm  6mm 7mm silicon carbide precision black  car ceramic bearing ball price

Tolerances by Grade for Individual Balls Micrometers

  GB/T 308-2002

Grade(G)

Allowable Ball

Diameter Variation

(VDWl)

Allowable Deviation from Sperical Form

(Rw)

Roughness

(Ra)

3

5

10

20

100

0.13

0.25

0.5

1

5

0.08

0.13

0.25

0.5

2.5

0.010

0.014

0.020

0.032

0.1

Size Range: 0.4mm~140mm

Grade: G5~G60

Company Feature: Stable quality and High consistency

Compared with steel ball, Si3N4 ball has following advantages:

1. 59% 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 1050°C

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 with metal

14. Contact angular is very large with molten and nearly no reaction

All above combination makes Si3N4 to be first choice for high-demand bearing ball material and valve ball

 Application:

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. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance.

Note:

1. Black color as standard, gray color could be supplied upon customer requirement

2. Non-standard size and different gauge could be supplied

 

 

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