59.96mm,59.94mm,59.95mm,59.97mm,etc. G40 Or G60, SUJ3 Large Solid Steel Balls For Thrust Ball Bearings
Introduction
The full name of bearing steel is rolling bearing steel. It has high compressive strength and anti-fatigue performance, high hardness, high wear resistance and certain toughness, good hardenability, and extremely strict control of sulfur and phosphorus. It is a high-grade high-quality steel. Make cold work mold steel. Specific gravity: 7.81.
GCr15SiMn steel is a high-carbon, high-chromium bearing steel, which has higher wear resistance and hardenability than GCr15 steel. The critical quenching diameter in oil is 90~110mm (volume fraction of 50% martensite). After oil quenching at 840°C, tempering at 350°C, and then light quenching, the surface hardness is as high as 1096HV, and the depth of the hardened layer can reach 1mm. In view of the insufficiency of the heat treatment process of the forming roller, the non-martensitic transformation occurs by pre-cooling at the thin edge to produce troostite or sorbite, which enhances toughness, reduces stress, and then quenches as a whole to meet the process requirements.
The ice-cold treatment can improve the dimensional stability of the bearing, or perform martensite graded quenching to stabilize retained austenite and obtain high dimensional stability and higher toughness. This steel is generally not recommended for forging. Generally used after quenching and low temperature tempering.
GCr15SiMn bearing steel has higher wear resistance and hardenability than GCr15, medium cold working plastic deformation, poor weldability, sensitive to white spot formation, and temper brittleness during heat treatment. Used to manufacture ferrules with wall thickness> 12mm and outer diameter ≥ 250mm; steel balls with a diameter of 50.8-203.2 and rollers with a diameter> 22mm; in addition, it can also be used as other mechanical parts that require high hardness and high wear resistance, such as rolls. Spiral gauge etc.
Chrome steel ball, as the main part of bearing, are being widely used on the application like automotive industry, automobile, instruments, heavy machinery, engineering machinery and rolling mill machinery. etc.
Parameter
| Ball Diameter |
Grade |
Hardness |
Material |
| 59.96mm(2.36063") |
G40 or G60 |
HRc 60-67 |
GCr15SiMn,100CrSiMn6-4,SUJ3,52100 |
Product Details
| Product Name |
High Quality Chrome Steel Balls |
| Size range |
Ø 7.9375 mm – Ø 50 mm (GCr15/SUJ2/100Cr6 Chrome Steel Balls)
Ø 50 mm – Ø 82.55 mm(GCr15SiMn/SUJ3/100CrMn6 Chrome Steel Balls) |
| Quality grades |
G40 for balls Ø38.1mm to 50mm
G60 for balls Ø60mm to 76.2mm
G100 for balls Ø80mm,82.55mm
|
| Hardness |
For 45mm,50mm,60mm,63mm group ball,
a minumun core hardness at centre of the ball shall be HRc55.
minumun hardness at surface of the ball shall be HRc60.
minumun hardness at depth of 15% ball diameter shall be HRc58.
GCr15 :Core hardness min HRC55
Surface to OD’S 15% depth hardness min HRC58
Surface Hardness min HRC61
GCr15SiMn:Core hardness min HRC55
Surface to OD’S 15% depth hardness min HRC58
Surface Hardness min HRC61
|
| Application |
The High Quality Slewing Chrome Steel Balls are mainly applied in slewing ring bearing for wind turbines,such as single/double row ball bearing,single cross roller bearing,three roller bearing, double row angular contact ball bearing. |
| Precision / Grade |
Ball Diameter Tolerance
Vdws(≤) µm
|
Deviation from Spherical Form
△Rs(≤) µm
|
Maximun surface roughness
Ra(≤)µm
|
Lot diameter variation
Dwl(≤) µm
|
| G40 |
1 |
1 |
0.06 |
2 |
| G60 |
1.5 |
1.5 |
0.08 |
3 |
FAQ
Q: How long is the time of delivery?
A: The steel balls are in stock can be shipped around one week. otherwise,it takes about 20-30 days.
Q: Do you provide the samples?
A: Yes, small quantity of free samples could be provided.
Product Tags:
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SUJ3 Chrome Steel Bearing Balls 59.94mm 59.95mm 59.97mm G40 G60 Images
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