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Si3N4 Ceramic Balls For Bearings High Intension Wearing Anti-Canker, Alkali Resistance

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Si3N4 Ceramic Balls For Bearings High Intension Wearing Anti-Canker, Alkali Resistance

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Brand Name :	TOB Ceramic Bearings
Certification :	ISO 16949
Price :	negotiated
Payment Terms :	T/T
Supply Ability :	negotiated
Delivery Time :	negotiated

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Si3N4 Ceramic Balls For Bearings High Intension Wearing Anti-Canker, Alkali Resistance

Si3N4 Ceramic Ball

Si3N4 Ceramic Ball with good ability of isolation and no magnetism is the precision ceramic that fired in high temperature without oxidation air, which has the high intension, high wearing resistance, high temperature resistance, anti-canker, strong acid and alkali resistance, can be used in seawater for a long time. At 800℃, the intension and rigidity almost couldn’t be changed, whose density is 3.20g/cm3 and is the 1/3 of the weight of bearing steel. There are small centrifugal force when circumgyrating and run at high speed. Si3N4 Ceramic Ball also has the self-lubrication, and can be used in the environment with no lubricate medium and high pollution.

Staple Material and Manufacturing Presision
	Ceramic Balls	Plastic balls	Glass Balls	Stainless Balls
meterial	Zr02,Si3N4,SiC,Al2O3	POM,PE,PP,PA,UPE,PEEK	GLASS	440C,304,316,316L
grad	G5-G200	G100-G1000	G100-G1000	G10-G200

Staple size of the balls
Size(inch)	Size(mm)	Size(inch)	Size(mm)
	1.5	1/16"	1.588
	2	3/32	2.381
1/8"	3.175	5/32"	3.969
3/16"	4.763	7/32"	5.556
1/4"	6.35	17/64"	6.747
	7	9/32"	7.144
5/16"	7.938	11/32"	8.731
3/8"	9.525	13/32"	10.319
7/16"	11.112	29/64"	11.509
15/32"	11.906		12
31/64"	12.303	1/2"	12.7
17/32"	13.494		14
9/16"	14.288	19/32"	15.081
5/8"	15.875	21/32"	16.669
11/16"	17.463	23/32"	18.256
3/4"	19.05	25/32"	19.844
	20	13/16"	20.638
7/8"	22.225	15/16"	23.812
1"	25.4	1-1/16"	26.988
1-1/8"	28.575	1-3/16"	30.163
1-1/4"	31.75	1-3/8"	34.925
	35	1-1/2"	38.1
1-5/8"	41.275	1-11/16"	42.863
1-7/8"	47.625	2"	50.8

Tolerance and surface roughness of the balls
Grade	Variation of ball diameter	Deviation from ( △ Sph)	Surface roughness spherical from(Ra)
Grade	not over μ m
3	0.08	0.08	0.012
5	0.13	0.13	0.02
10	0.25	0.25	0.025
16	0.4	0.4	0.032
20	0.5	0.5	0.04
28	0.7	0.7	0.05
40	1	1	0.08
60	1.5	1.5	0.1
100	2.5	2.5	0.125
200	5	5	0.2

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