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51209 bearing 45*73*20

51209 Bearing 45*73*20

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Min. Order:
1 Piece
Payment term:
30% T/T in advance , 70% T/T upon the B/L Copy
Delivery time:
30 days
Technical Parameters:
Product Designations:
51209
Structure:
Thrust ball bearing
Inside Diameter:
45 mm
Outside Diameter:
73 mm
Thickness:
20 mm
Weight:
0.24(ZrO2) 0.13(Si3N4) 0.0556(Plastic） KG
Brand:
KMK
Precision Rating:
P0-P6
Bearing Material:
stainless steel ,plastic , ceramic , chrome steel
Seals Type:
No
51209 Bearing 45*73*20

 

Ceramic bearings( including full ceramic bearings and Hybrid ceramic bearings), are usually made in Si3N4, ZrO2, Al2O3, SiC ceramic powder, sometimes hybrid with stainless steel races and glass balls

 


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How can you buy 51209 Bearing 45*73*20 on the Internet?
High quality 51209 ( 0.24(ZrO2) 0.13(Si3N4) 0.0556(Plastic） kg Mass, ID: 45 mm OD: 73 mm WD: 20 mm , P0-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. 51209. 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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Categories:  Ceramic Ball Bearings
Thrust Ball Bearings
51209 Related Products »
Product Groups
ball bearing
Thrust ball bearing
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Comparison of bearing material technical data:

  
 

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