Si3n4 Customized Surface Polishing Silicon Nitride Ceramic Balls

Basic Info.

Model NO.	0.400~150mm
Max Use Temperature	1050ºC
Grade	G5-G200
Transport Package	Plastic Bag/Box/Carton
Specification	0.400~150mm
Trademark	GUANYING
Origin	China
HS Code	6909110000
Production Capacity	100000 PCS Per Month

Product Description

Ceramic Balls / Plastic Balls / Glass Balls / Stainless Balls
Ceramic Ball------Si3N4 Ball
Compared with steel ball, Si3N4 ball has following advantages:
1. 59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration.2. 44% larger elastic modulus, which means less deformation under load.3. Harder with Rockwell hardness as 78.4. Smaller friction coefficient.5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature.6. Superior surface finish can be achieved, Ra could be 4~6 nm.7. Can endure high temperature with high hardness and strength up to 1050ºC.8. Never rust, and can roll without lubrication.9. More corrosion resistant than steel.10. Free of metal contamination.11. Non-magnetic.12. Electric isolation.13. No adhesive-wear with metal.14. Contact angular is very large with molten and nearly no reaction.All above combination makes Si3N4 to be first choice for high-demand bearing ball material and valve ball.
Application
Si3N4 ball can be used in all bearings with special requirement: high speed bearing, high precision bearing; vacuum bearing; high/low temperature bearing, non-magnetic bearing, high precision ball screw; Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance
Si3N4 ball is generally assembled in bearing for application in high-tech industry such as aerospace, national defense, chemical industry, metallurgical, medical, food, oil plant, electronic etc.
Company Feature: stable quality and high consistency with ASTM F2094-03a standard.
Size Range: 0.400~150mm.
Grade: G5~G60.
Note: 1) black color as standard, gray color could be supplied upon customer requirement. 2) Plenty of stock. 3) Non-standard size and different gauge could be supplied. 4) GPS and HIP Si3N4 balls are available.

	Ceramic balls	Plastic balls	Glass balls	Stainless steel balls
Material	Zro2,Si3N4,SIC,Al203	POM,PA,PE,UPE,PEEK,PP	GLASS	440C,304,316,316L
Gead	G5-G200	G100-G1000	G100-G1000	G5-G200

Tolerance and surface roughness of the balls

Grade	Variation of Ball diameter V dws	Devition from(Sph)	Surface roughness(Ra)	Diameter tolerance
	Not over,μm
G3	0.08	0.08	0.012	*
G5	0.13	0.13	0.02	*
G10	0.25	0.25	0.25	*
G16	0.4	0.4	0.032	*
G20	0.5	0.5	0.04	*
G28	0.7	0.7	0.05	*
G40	1	1	0.08	*
G60	1.5	1.5	0.1	*
G100	2.5	2.5	0.125	±12.5
G200	5	5	0.2	±25
G500	13	13	*	±50
G100	25	25	*	±125

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
1/4"	6.35	17/64"	6.747
	1.5	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	1/3"	12.7
17/32"	13.094		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	2001-3-16	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

Product pictureWe could supply ceramic balls plastic balls, glass balls and stainless balls, staple material and manufacturing precision as following:

FAQ:

Q1: Are you a factory or trading company?A1: We are not only a factory, we are also the trading company ,we can guarantee our price is first-hand, very cheap and competitive.Q2: How does your factory do regarding quality control?A2: All the products will be 100% checked before the shipment,also will take video or pictures send to you.Q3: When can I get the price?A3: We will arrange the sale manager one to one to quote you within 1 hour after we get your inquiry.Q4: How could I get a sample?A4: If you can not buy our product in your local area, we will ship a sample to you.You will be charged a sample price plus all related shipping costs.Express delivery charge depends on the quantity of the samples.also ,we are the gold supplier of Alibaba, you can get the most preferential delivery costs.Q5: What are the way of the transportation?A5: Depending upon the weight of goods ,we can ship by express ,air and shipping ,including DHL ,UPS ,TNT and Fedex.