• BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE System 1
  • BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE System 2
  • BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE System 3
BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE

BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1000 pc
Supply Capability:
600000 pc/month

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Specifications

1 inch stainless steel ball bearing
1)100% original
2)High precision
3)good resistance and no spots
5)ISO 9001:2008 SGS

 

 

Product Description

440C bearing steel balls are our main product.

Our best precision of them is G16( the ball diameter variation is 0.4um max. )

Diameter from 2.0mm to 1'' are all ok to us.


Our hot sizes: 2.0mm 2.381mm 2.5mm 3.175mm(1/8'') 4.763mm(3/16'') 5.0mm 5.5mm 6.0mm 6.35mm(1/4'') 7.144mm(9/32'') 7.938mm (5/16'') 8.731mm 9.0mm 9.525mm(3/8'') 11.1125mm(7/16'') 12.7mm(1/2'') 9/16'' 5/8'' 3/4'' 1'' ...

Usually we also have some stock of them.

 

 

Technology

MATERIAL

C%

Si%

Mn%

P%

S%

Cr%

Mo%

Ni%

N

AISI440C

0.95-1.20

1.00
max

1.00
max

 0.03
max

 0.03
max

16.0-18.0 

0.4-0.75 

0.6

\

AISI420C

0.42-0.5

1.00
max

1.00
max

0.04
max

0.03
max

12.5-14.5

\

1.0

\

 

Precision(Grade)ball diameter variationdeviation from sphericalsurface soughnesslot diameter variationnominal ball deviation tolerance
VdwaSphRaVdwlTdn
 not over(um)    
G100.250.250.0250.5*
G160.40.40.0320.8*
G200.50.50.051*
G401.01.00.082*

 

 

Advantages

For high precision 440c stainless steel ball bearings, the roundness and surface roughness is very important.

For roundness, we use roundness measuring equipment.

For surface roughness, we use 100 times microscope and 500 times microscope.

We will check each Lot no. steel balls before packing.

 

Q:How to get rid of casting sand inside casting parts?
Are you saying that in the sand casting cavity? We use the manual blast, he is like a pipe will be automatic shot out of the grit, into the casting cavity, to remove the internal cavity in the purpose of casting sand!
Q:How to distinguish the forging parts and casting parts accurately
To distinguish from the use of materialsForging materials are mainly made of carbon steel and alloy steel of various components, followed by aluminum, magnesium, titanium, copper and their alloys. The original state of the material is rod, ingot, metal powder and liquid metal. The materials needed for casting are mostly metal, wood, fuel, molding materials and so on. In contrast, the forging parts rarely produce dust, harmful gas and noise, etc., and play a more obvious role in environmental protection. Of course, because of this, the price of forged parts on the market is higher than that of castings.
Q:When there is no flaw detection for large casting parts, is there any crack inside?
Cracks are considered serious levels of defects and should be repaired
Q:What are the casting parts tested?
The surface brightness, appearance, size, chemical composition, weight, material, surface defects, internal defects, seals need to be checked, leakage, etc.
Q:What are the casting parts processing engineering?
According to the classification of process methods, sand casting and special casting.
Q:What method of casting does not rust? I think the sample is like oil
The surface of a general casting is easy to rust. In order to prolong the rusting period, antirust paint or antirust oil is usually sprayed. What you said should be anti rust oil.
Q:How to improve the surface roughness of casting parts?
One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.
Q:How do casting parts remove stress?
Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment
Q:How to solve casting defect casting?
Different defects, different solutions, some shortcomings, the current domestic level can not be resolved
Q:As shown, how do I achieve the tightness test of this product, and achieve industrial production? Seek expert advice.
Precise and tight sealing of the surface to which the test piece is to be tested, equipped with an airtight test instrument, and an electrical control system. You can complete automated testing equipment

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