欢迎来到耐特商城! [登录] [注册]     客服热线 400-888-6037
Ceramic ball > Ceramic ball > ZrO2 ball > ZrO2 Ceramic Ball Sφ7.938
浏览过的商品
ZrO2 Ceramic Ball Sφ7.938
商品编号:140000124
原价:$0.48降价通知
规格型号:7.938
库存:14800 件
我要买:-+
已选择 " 1件 "
立刻购买
加入购物车
收藏商品
搜索类似商品
若库存数量不足采购数量请点击:
若上架商品没有您想要的请点击:

产品参数

商品编号: 140000124 品牌: TARSO
产品类别: ZrO2 ball 产品重量:(g) 0.01
产品型号: 氧化锆陶瓷球7.938 产品颜色: white
精度等级: G10 使用特性:
滚动体材料: ZrO2 直径:(mm) 7.938

产品特性

With a high temperature, high pressure, low water absorption, chemical stability, wear resistance and other characteristics

应用领域

Petroleum, chemical, electronics, vacuum and environmental protection industries,etc

商品详情

 

Zirconia balls:

Pure ZrO2 is white, containing impurities yellow or gray, zirconia density 5.6g/cm3, ZrO2 has self-lubricating, can solve the pollution caused by lubricating medium and add inconvenience; good corrosion resistance in acid medium, medium base, seawater media may also be used; temperature, zirconia ceramic at 600 ℃, the strength, hardness is almost constant; non-magnetic, non-conductive.

The main technical indicators:

 Chemical Composition:ZrO2 94.6%,Y2 O3 5.2±0.2%

 Density:> 6.0g/cm3

 Hardness:HRA>87,Mohs9

 Flexible coefficient:8.0Mpa.m1/2

 Crushing strength:150Kgf(2mm)

 Abrasion value:Reached the international advanced level

 

Ceramic ball Common Specifications

Size (diameter)

Size (diameter)

in

mm

in

mm

1/32

0.794

11/32

8.731

 

0.800

3/8

9.525

 

1.000

7/16

11.112

1/16

1.588

31/64

12.303

3/32

2.381

1/2

12.700

5/32

3.969

17/32

13.494

3/16

4.763

9/16

14.288

7/32

5.556

19/32

15.081

15/64

5.953

5/8

15.875

1/4

6.350

3/4

19.050

17/64

6.747

1

25.400

9/32

7.144

1 1/4

31.75

5/16

7.938

1 11/16

42.863

Ceramic ball accuracy class  (GB308-2002  ISO3290-1998)

Class

Ball diameter variation ( um)

Spherical tolerance ( um)

Surface roughness (Ra,um)

3

0.08

0.08

0.010

5

0.13

0.13

0.014

10

0.25

0.25

0.020

16

0.40

0.40

0.025

20

0.50

0.50

0.032

24

0.60

0.60

0.040

28

0.70

0.70

0.050

40

1.00

1.00

0.060

60

1.50

1.50

0.080

 

 

 

Name

Unit

Bearing steel

Stainless steel

Si3N4

ZrO2

SiC

Al2O3

Mechanical properties

Density d

g/cm3

7.85

7.90

3.20 ~3.30

6.00

3.10

3.95

Thermal expansion coefficientα

10-6/K

10.0

11.0

3.2

10.5

4.5

8.5

ModulusE

GPa

208

200

300~320

210

≥350

380

Poisson's ratio

             

Ceramic materials and steel basic performance comparison

 

Compared with the steel balls, zirconia balls main advantages:

1, 23% lighter than steel balls, reducing the bearing running speed and acceleration on the channel centrifugal force, crush and abrasion;

2, the friction coefficient is small, rotation can be good flexibility;

3, high temperature, temperature can reach 750 ℃;

4, never rust, no oil lubrication in working conditions;

5, more chemical resistant than steel;

6, no metal contamination;

7, the non-magnetic;

8, the electrical insulation.

Purpose:

Zirconia ceramic ball valve is mainly used for the ball, full ceramic bearings, measuring ball, trackball, fine grinding balls can be used for high-temperature resistance, corrosion resistance, insulation, absolutely magnetic, non-lubricated and other occasions, is corrosive occasions substitute balls ideal material...

As the valve ball use, zirconia ceramic ball has been successfully used in high-pressure homogenizer, diaphragm pumps, metering pumps, oil pump, high-pressure spray gun and other equipment.

Product Features: density of 6.05g/cm3.

Specifications: 0.4mm ~ 50.8mm (1/64 "~ 2")

Available grade: G5 ~ G40.

Note: 1) white zirconia balls based, if necessary, can also provide a yellow zirconia balls.

2) has a large inventory to meet delivery requirements at any time.

3) non-standard sizes to meet the requirements.

 4) The thermal expansion coefficient of zirconia 10.5 ×10-6 / ℃, the thermal expansion coefficient close to the metal, and metal with good stability with temperature changes but the size is large, a contact failure in the form of rolling fatigue destructive fragmentation, in some critical situations as silicon nitride material stability.