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628ceramic bearing 8*24*8

628ceramic Bearing 8*24*8

Min. Order:
1 Piece
Payment term:
T/T Payment in advance
Delivery time:
according to quantity
Technical Parameters:
Product Designations:
628
Structure:
ball bearing ceramic bearing
Inside Diameter:
8 mm
Outside Diameter:
24 mm
Thickness:
8 mm
Weight:
0.013g ( Zro3) 0.0072( sI3N4) 0.0033(plastic) KG
Brand:
KMK
Precision Rating:
po-p6
Bearing Material:
stainless steel ,plastic , ceramic , chrome steel
Seals Type:
open
628ceramic Bearing 8*24*8

628ceramic bearing have excellence performance as special electrical and magnetism resistance , could be used in awful environment andspecially condition.

 

 

Performance

Unit

GCr15

9Cr18

Si3N4

ZrO2

Density

g/cm3

7.8

7.9

3.2

6

Thermal expansion α

10-6/

11

17

3.2

10.5

Elastic modulus E

GPa

208

200

320

210

Poisson's ratioμ

0.3

0.3

0.26

0.3

HardnessHV

800

700

1700

1300

Flexural strength δ

Mpa

2400

2600

900

1000

Compressive strength δ

MPa

2000

3500

Toughness Kc

Nm/cm2

20

25

7

11

Thermal conductivity λ

W/mk

30-40

15

3.5

2.5

Electric resistance Ω

mm2/m

1

0.75

1018

1015

Specific heat

J/KgK

450

450

800

400

Temperature

.

120

150

1000

800

Corrosion-resistant

No

Weak

Strong

Strong

Stress cycles (50% failure probability)

10*106

10*106

50*106

50*106

Contact fatigue failure modes

Flake

Flake

Flake

Flake/Break

Magnetic

Exist

Exist

Not Exist

Not Exist

Dimensional stability

Poor

Poor

Good

Good

Insulating

Not insulated

Not insulated

Good

Good

Performance

Unit

Boron carbide

Aluminum oxide

Toughened Aluminum oxide

Zirconium oxide

Silicon nitride

Silicon carbide

Symbol

B4C

99% Al2O3

ZTA-20%

ZrO2

Si3N4

SiC

Density

g/cm3

2.4~2.51

3.7~3.99

5.5

6

3.2

3.2

Hardness HV

Kg/mm

2700~3200

2300~2700

1470~1500

1300~1500

1700 ~2700

2350~2450

Flexural strength

MPa

350~400

300~400

700

1000~1500

900

450~800


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High quality 628 ( 0.013g ( Zro3) 0.0072( sI3N4) 0.0033(plastic) kg Mass, ID: 8 mm OD: 24 mm WD: 8 mm , po-p6 Accuracy Class , stainless steel ,plastic , ceramic , chrome steel Material ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 628. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.
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