51209 Bearing 457320

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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:

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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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

51209 Bearing 457320

51209 Bearing 457320

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