China Rongtech International INC.

Zirconia( ZrO2) Ball

ZrO2 Balls, Spheres: φ0.8mm-φ80mm,Because of their good resistance to high temperature, corrosion,wear and self-lubrication, the balls can be wildly used in chemical industry machine-manufacturing,aeropspace and steel industry etc. Such as ceramic bearings, pumps and valves and forming tools. Milling and kneading media, etc.

Standards for Geometry and surface

Grade	Available Size Range	Ball Diameter Variation(µm)	Deviation from Spherical Form(µm)	Lot Diameter Variation(µm)	Surface Roughness(µm Ra)
5	1/32"~1/2"	0.13	0.13	0.15	0.020
10	1/32"~1"	0.25	0.25	0.25	0.025
15	1/32"~5/8"	0.35	0.35	0.35	0.025
20	1/32"~15/8"	0.5	0.5	0.5	0.040
40	1/64"~2"	1	1	1	0.080
60	1-3/4"~3"	1.5	1.5	1.5	0.100

Ceramic Ball accuracy class GB308-2002 ISO3290-1998 (E) Standard

Grade	Ball Diameter fluxional( µm )	Spheres( Δ Sph) Tolerance( µm)	Surface roughness(Ra, µm)
3	0.08	0.08	0.010
5	0.13	0.13	0.014
10	0.25	0.25	0.020
16	0.40	0.40	0.025
20	0.50	0.50	0.032
24	0.60	0.60	0.040
28	0.70	0.70	0.050
40	1.00	1.00	0.060
60	1.50	1.50	0.080