Ball Bearings

The Ball Bearings are usually used in industries that require high accuracy and rust prevention performance, such as aviation, aerospace, bearings, motors, high-precision instruments, valves, petroleum, etc.

Product Details

Product Introduction

The Ball Bearings are usually used in industries that require high accuracy and rust prevention performance, such as aviation, aerospace, bearings, motors, high-precision instruments, valves, petroleum, etc. They are made of high-quality stainless steel, which has the characteristics of acid resistance, alkali resistance and corrosion resistance. In addition, our Ball Bearings are two times harder than copper and ten times harder than aluminum. They are also anti-pull, anti-moisture and anti-oxidation.


Advantages

These Ball Bearings can be made in different specifications to meet customers' requirements. We have advanced production equipment and perfect testing instruments for roundness testing, vibration testing, gauge testing, surface finish testing, rockwell hardness testing. So you can rest assure that the quality of our steel balls is guaranteed and the price we offer is reasonable.


440C STAINLESS STEEL BALL

Size range

0.50mm (0.02") up to 50.8mm (2")

Grades

G3, G5, G10, G16, G20, G24, G28, G40, G60, G100, G200

Hardness

HRC 58 Min.

 

MATERIAL CONVERSION

GB (China)

9Cr18Mo

ASTM/AISI (USA)

440C

JIS (Japan)

SUS440C

 

CHEMICAL COMPOSITION

STEEL NUMBER

440C

Carbon (C)

0.95% - 1.10%

Silicon (Si)

0.8% Max.

Manganese (Mn)

0.8% Max.

Phosphorous (P)

0.035% Max.

Sulphur (S)

0.03% Max

Nickel (Ni)

3%

Chromium (Cr)

16% - 18%

 

PHYSICAL CHARACTERISTICS

Tensile strength

285,000 psi

Yield strength

275,000 psi

Modulus of Elasticity

29,000,000 psi

Density

0.277 lbs/in3

Corrosion resistance

Yes, comparison details as below chart.

Magnetic

Yes

 

APPLICATION

Bearings, stamping / hydraulic parts, valves, seals refrigeration equipment, aerospace high-precision mechanical parts, crafts, toys,etc.

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