Ceramic Roller VJ is a patented new product. It is different from the current rapid cooling zone roller of gear-type or thread-type in which it combines bigger and smaller teeth with each bigger one containing two smaller ones. This special structure enhances the thickness and bending strength of VJ cooling zone of roller kiln. At the same time, this special designed appearance of VJ cooling roller without increasing the intersection area, therefore it has excellent thermal shock resistance to bear big temperature gap during fast cooling zone of roller kiln. At the same time, this special designed appearance of VJ cooling roller makes the movement of ceramic tiles smooth and stable on the ceramic rollers. It is also applicable to a drying kiln.

Characteristics	Items	Types
Physical Properties	Bulk Density (g/cm³)	2.5～2.7
	Apparent Porosity (%)	17~22
	Water Absorption (%)	6~8
	Bending Strength (MPa) Indoor Temp. High Temp.	45~55 >30 1300°C
	Thermal Expansion Coefficient (×10-6/℃)(25-1000℃)	5.7～6.0
	Thermal Shock Resistance	Very good
	Max. Working Temp. (°C)	1200
Composition	AL2O3 (%)	74~76
	SiO2 (%)	22~24
	Fe2O3(%)	0.4 ~0.6
Application	Roller Kiln
	Porcelain Tile
	Glazed Wall Tile
	Glazed Floor Tils
Specification	O.D. Ø21 ~ 70mm, Length up to ≤ 4800 mm.
Linearity	≤0.07%*L