BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE
- Ref Price:
-
- 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 | 1.00 | 0.03 | 0.03 | 16.0-18.0 | 0.4-0.75 | 0.6 | \ |
AISI420C | 0.42-0.5 | 1.00 | 1.00 | 0.04 | 0.03 | 12.5-14.5 | \ | 1.0 | \ |
| Precision(Grade) | ball diameter variation | deviation from spherical | surface soughness | lot diameter variation | nominal ball deviation tolerance |
| Vdwa | Sph | Ra | Vdwl | Tdn | |
| not over(um) | |||||
| G10 | 0.25 | 0.25 | 0.025 | 0.5 | * |
| G16 | 0.4 | 0.4 | 0.032 | 0.8 | * |
| G20 | 0.5 | 0.5 | 0.05 | 1 | * |
| G40 | 1.0 | 1.0 | 0.08 | 2 | * |
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:We are small castings, the need for surface treatment of shot blasting machine, about how much?
- The choice of shot blasting machine, this is according to the workpiece size, yield, whether can collision, and the working time and other factors considered, while the price of different blasting machine are not the same, but the vast majority of small castings used crawler shot blasting machine,
- Q:What are the requirements for casting steel castings?
- 4 thickness, most should be placed above the.5 and try to reduce the number of.6, the sand core should be used in classification of flat surface
- Q:How can the casting be free of trachoma?
- Measures for the prevention of trachoma in castings:1, sand compaction to high, paint two times;
- Q:What are the casting parts processing engineering?
- According to the classification of process methods, sand casting and special casting.
- Q:Would you please tell me how to use casting parts for a year?The cast of an aircraft wing needs to be put aside for a year before it breaks;Does anyone know why?
- There are various casting stresses after casting, which can be divided into two kinds: thermal stress and shrinkage stress. In a long time placed in the atmosphere, called aging treatment.Aging treatment is an effective measure to eliminate casting stress. Aging is divided into natural aging, thermal aging and resonance aging.1, the so-called natural aging, the casting is placed in the open field for more than half a year, so that the internal stress relief.
- Q:Can the casting part be phosphating with the phosphating solution of the pickling board?
- Like stainless steel casting, duplex stainless steel casting is phosphating, ductile iron gray iron is not required
- Q:Heat treatment process and purpose of casting parts
- Methods: artificial aging or natural aging (also called normalization) treatment.Artificial aging: heating to 2-3 Baidu, it is best to apply mechanical vibration, and maintain a period of time.
- 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:Why do casting parts have air holes?
- There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。
- 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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BEST QUALITY OF STAINLESS STEEL BALL WITH LOW PRICE
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 pc
- Supply Capability:
- 600000 pc/month
OKorder Service Pledge
OKorder Financial Service
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