Excellent Wear Resistance 1-6mm Silicon Nitride Ceramic Bearing Balls

• Application: Aerospace, Electronics, Medical, Refractory, Industrial Ceramic
• Type: Ceramic Balls
• Compressive Strength: 2500
• Flexural Strength: 900
• Color: Gray
• Thermal Shock Resistance: 800
• Model NO.: A NN-52611
• Hardness: 16
• Thermal Conductivity: 19
• Processing Service: Bending, Welding, Cutting, Punching, Decoiling
• Density: 3.2g/cm3
• Max Working Temperature: 1400ºC
• Transport Package: Customized Package
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China
• Production Capacity: 20000 Piece/Pieces Per Month

Product Description

 

 

Silicon Nitride Ceramic Ball

Silicon Nitride Ceramic Ball is made of the hot isostatic pressing and sintering furnace and has the properties  including high strength,high wear resistance,high temperature,corrosion,acid and alkali resistant,long-term using in the sea,good electrical insulating ect.

 

The precision Si3N4 Ceramic Ball of Innnovacera produce is widely used in a  a variety of high-precision, high-speed / ultra-high-speed bearings, vacuumbearing, high / low temperature bearing, non-magnetic bearing.It is also as the measurement ball  used in chemical valve,high temperature valve,meter valve ect.The field of the application involve chemical, metallurgical, medical, food, oil, electronics,aerospace,ect.

 

Silicon Nitride (Si3N4) Characteristics:

1 Good thermal shock resistance 2 Creep resistance 3 Low density 4 High fracture toughness 5 High hardness and wear resistance 6 Electrical resistivity

 

Stock sizes: from diameter 1.6mm to 50.8mm as belows
Size(")	Size(MM)
3/32"	2.381
1/8"	3.175
5/32"	3.969
3/16"	4.763
7/32"	5.556
15/64"	5.953
1/4"	6.35
17/64"	6.747
9/32"	7.144
5/16"	7.938
11/32"	8.731
3/8"	9.525
13/32"	10.318
7/16"	11.113
29/64"	11.509
15/32"	11.906
31/64"	12.303
1/2"	12.7
5/8"	15.875
11/16"	17.4625
1-1/16"	26.9875
1-1/4"	31.75
1-3/8"	34.925
1-5/8"	41.275
1-11/16"	42.8625
1-3/4"	44.45
1-7/8"	47.625
2"	50.8

Silicon Nitride Ball Sizes Overview:
Grade	Diameter Variation  (Vdws)	(Vdws) Spherical Deviation (⊿Sph)	Diameter Variation Of Batch (Vdwl)	Surface Roughness (Ra)
G3	0.05-0.08	≤0.08	<0.13	0.01
G5	0.08-0.13	≤0.13	<0.25	0.014
G10	0.15-0.25	≤0.25	<0.5	0.02
G16	0.2-0.4	≤0.4	<0.8	<0.025
G20	0.3-0.5	≤0.5	<1	<0.032
G100	0.4-0.7	0.4-0.7	<1.4	<0.0105

Properties			Units	Silicon Nitride (Si3N4)
						HPSi3N4	GPSi3N4
Mechanical	Density	g/cm3	3.24~3.28	3.24~3.26
		Color	--	Gray	Gray
		Water Absorption	%	0	0
		Vickers Hardness	Gpa	14	14
		Flexural Strength(20°C)	Mpa	850-900	750-800
		Compressive Strength(20°C)	Mpa	3000	3000
Thermal	Thermal Conductivity(20°C)	W/m.K	42	22
		Thermal Shock Resistance(20°C)	Δ T(C)	617	605
		Maximum Use Temperature	°C	1500	1500
Electrical	Volume Resistivity(25°C)	Ω.cm	--	--

 

 

Silicon Nitride Ceramic 4 Types:

* Reaction-Bonded Silicon Nitride (RBSN)
* Hot Pressed Silicon Nitride (HPSN)
* Sintered Reaction-Bonded Silicon Nitride (SRBSN)
* Sintered Silicon Nitride (SNN)

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