Steel Ball for Windmill
The steel ball for windmill bearing is generally in the range of Φ 45-80mm bearing steel ball, which is used for yaw bearing and pitch bearing. The life of windmill bearing are required to last more than 20 years as the working environment is tough and maintenance cost is very high. Therefore,windmill bearing have strict quality requirements on steel balls.Yusion carries out standard management systems strictly according with proprietary standard regulated by international technology criterion of steel to select our raw material.And by advanced facility, top-ranking testing intruments and stringent control procedures to guarantee our windmill balls with superior quality and long life.
SIZE RANGE
Ø 15.875 mm – Ø 50 mm (GCr15/SUJ2/100Cr6 Chrome Steel Balls)
Ø 50 mm – Ø 80 mm(GCr15SiMn/SUJ3/100CrMn6Chrome Steel Balls)
TECHNICAL FEATURES
1. Quality grades
G40 for balls Ø39.688-65mm
G60 for balls Ø 69.85-80mm
2. Hardness
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
MATERRIAL COMPARISON LIST
|
State |
China |
Japan |
America |
Germany |
France |
UK |
Russia |
|
Standard |
GB |
JIS |
ASTM/AISI |
DIN/VDEh |
NF |
BS |
ГОСТ |
|
Title |
Gcr15 |
SUJ2 |
52100 |
100Cr6 (1.3505) |
100C6 |
534A99 |
ШX15 |
|
Tiltle |
GCr15SiMn |
SUJ3 |
* |
1.3520 |
100CrMn6 |
* |
ШX15CГ |
CHEMICAL COMPOSITION
|
Steel NO. |
Chemical Composition% |
|||||
|
C |
Si |
Mn |
P |
S |
Cr |
|
|
GCr15 |
0.90-1.05 |
0.15-0.35 |
0.20-0.40 |
≤0.027 |
≤0.020 |
1.35-1.65 |
|
GCr15SiMn |
0.95-1.05 |
0.40-0.65 |
0.90-1.20 |
≤0.027 |
≤0.020 |
1.35-1.65 |
MECHANICAL PROPERTY
|
Item |
GCr15 |
GCr15SiMn |
|
Density (g/cm3) |
7.8 |
7.8 |
|
Hardenability |
Good |
Excellent |
|
Wear Resistance |
Excellent |
Excellent |
|
Anti-rust |
No |
No |
|
Anti-corrosion |
No |
No |
|
Magnetic |
Yes |
Yes |
QUALITY INSPECTION
Our windmill ball were 100% tested by eddy current test machine.
PACKING
Note: for 45mm balls, 50pcs/ctn,36ctn/pallet,1800pcs/pallet;
for 50mm balls, 50pcs/ctn,30ctn/pallet,1500pcs/pallet;
for 60mm balls, 30pcs/ctn,30ctn/pallet,900pcs/pallet;
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