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G10 Ball Bearing Balls Bearing Spare Parts Silicon Nitride Ceramic Balls

Country/Region	china
City & Province	hainan hainan
Categories	Steel Sheets

Product Details

Rolling Element Precision Bearing Ball Silicon Nitride Ceramic balls G10 for Bearing

►The development history of CAEC silicon nitride ceramic balls:

1986-1990 Exploratory research on ceramic bearings

1991-1995 Preliminary Research on Ceramic Ball Bearings and Ceramic Balls for Bearings

1996-2000 Mass manufacturing technology development of high-speed precision ceramic ball bearings

2000-now Comprehensively improve the level of silicon nitride manufacturing

►Production process of CAEC silicon nitride ceramic balls:

Raw material-granulation-pressing-cold isostatic pressure vessel-air pressure sintering vessel-grinding process-testing and inspection-finished product.

►Quality Assurance System of CAEC silicon nitride ceramic balls:

Use laser confocal microscope and ultrasonic scanning microscope for particle size analysis, impurity content analysis, oxygen and nitrogen content analysis, phase composition analysis.

►Performance testing of CAEC silicon nitride ceramic balls:

Density, hardness, vibration value, crushing load, fracture toughness.

►Product features of CAEC silicon nitride ceramic balls:

I. Excellent friction performance

1. Since the affinity of steel/ceramic matching is lower than that of steel/steel, when the lubricating film is not formed well or lacks lubrication, the lower affinity can effectively reduce the risk of adhesive friction.

2. Due to the high hardness of the ceramic ball, in the case of severe friction, the ceramic ball has good dimensional and shape accuracy retention and repairability to the groove to ensure the bearing running.

II. Small spin-to-roll ratio

Compared with steel bearings, the spin-to-roll ratio of ceramic ball bearings is about 30% lower, indicating that ceramic ball bearings have better contact conditions and lower spin friction.

III. Low temperature rise

Less heat; Small deformation; Low coefficient of friction; Small centrifugal force and gyro torque.

►Technical parameters of CAEC silicon nitride ceramic balls:

Item		Materials class
		I		II	III
Property	Bending strength σ_3.40 (Mpa)		900	800	600
	Crushing load ratio (%)		35	35	30
	Hardness (HV10)		1580	1480	1380
	Fracture toughness (Mpa.m^1/2)		6.0	5.0	5.0
Maximum limit of microstructure	Pore size (μm)		10	10	25
	Porosity (%)		0.02	0.06	0.06
	Crystal phase (μm)		10	10	25
	The second ceramic phase (μm)		25	25	25
Maximum amount of inclusions per square centimeter of cross section	Range 200 (μm)		0	0	1
	Range 100~200 (μm)		0	1	2
	Range 50~100 (μm)		1	2	4
	Range 20~50 (μm)		4	8	16

Application of Si3N4 ceramic ball
	G3	G5	G10, G16	G20, G28, G40
Class I	High speed power equipment	Main drive bearing
Class II		Vacuum equipment, high speed instrument, mechanical devices,	Motor	Testing ball, separating ball
Class III			Sport, entertainment, food processing	Mechanical devices

Si3N4 ceramic ball specifications
Nominal diameter of ceramic ball		Nominal diameter of ceramic ball		Nominal diameter of ceramic ball
mm	in	mm	in	mm	in
0.794	1/32	0.8		1
1.588	1/16	2		2.381	3/32
2.5		3		3.969	5/32
4		4.5		4.762	3/16
5		5.5		5.556	7/32
5.953	15/64	6		6.35	1/4
6.5		6.747	17/64	7
7.144	9/32	7.5		7.938	5/16
8.731	11/32	9.525	3/8	11.112	7/16
12.303	31/64	12.7	1/2	13.494	17/32
14.288	9/16	15.081	19/32	15.875	5/8
19.05	3/4	25.4	1	31.75	1 1/4

►ZYS Manufacturing capacity of Si3N4 ceramic ball:

ZYS Rolling Element Precision Bearing Ball 9cr18/9cr18mo Stainless Chrome Steel Ball, Silicon Nitride Ceramic Balls, Zro2 Zirconia Ceramic Ball G10 for Bearing