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kuojou is not online. Last active: 25/04/2018 1:45:07 PM kuojou
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China precision steel balls
Posted: 25 Apr 2018 01:45 PM
Slewing Ring Bearing Balls for Wind Energy
Wind turbine bearings are important components of wind power generator.According to the installation location, wind turbine bearings could be divided into main shaft bearings, yaw bearings and pitch bearing etc. The life of wind turbine bearings are required to last more than 20 years as the working environment is tough and maintenance cost is very high. Therefore, wind turbine bearings 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 wind energy steel 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/SUJ3/100CrMn6 Chrome 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
StateChinaJapanAmericaGermanyFranceUKRussia
StandardGBJISASTM/AISIDIN/VDEhNFBSГОСТ
TitleGcr15
SUJ2

52100100Cr6 (1.3505)100C6534A99
ШX15

TiltleGCr15SiMn
SUJ3*1.3520
100CrMn6*ШX15CГ


CHEMICAL COMPOSITION

Steel NO.Chemical Composition%





CSiMnPSCr

GCr150.90-1.050.15-0.350.20-0.40≤0.027≤0.0201.35-1.65
GCr15SiMn0.95-1.050.40-0.650.90-1.20≤0.027≤0.0201.35-1.65

MECHANICAL PROPERTY

ItemGCr15GCr15SiMn

Density (g/cm3)
7.87.8
Hardenability
GoodExcellent

Wear Resistance
Excellent
Excellent

Anti-rustNoNo
Anti-corrosion
NoNo

Magnetic
Yes
Yes


PRODUCTION PROCESS

QUALITY INSPECTION
Our wind turbine bearings ball were 100% tested by eddy current test machine.


PACKING
Paper Cartons & Wooden Pallet.
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;
China precision steel balls
website:http://www.ys-steelball.com/steel-ball/slewing-ring-bearing-ball/
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