Product Details

Ceramic rollers are long ceramic tubes that turn inside a roller kiln or roller-hearth furnace (a furnace where the load rides on a bed of turning rollers instead of a belt or a car). They carry tiles, sanitary ware, glass sheets or metal parts through the hot zone, so they must stay straight and strong at high temperature for a long time.

Main features

Stay straight when hot. A good roller does not bend or sag under load, so the product moves evenly and does not crack.
Resist thermal shock. Rollers near the kiln entry and exit see fast temperature changes; the right material keeps them from cracking.
Smooth surface. A clean surface helps stop glaze and dust from sticking and building up.
Long service life. Fewer roller changes mean fewer stops.

Common materials

Material	Typical use
Alumina-mullite	Ceramic tile and sanitary ware kilns, the most common type
High-alumina	Hotter zones and heavier loads
Fused silica	Glass tempering and bending furnaces, very low thermal expansion
Silicon carbide	Very high temperatures and heavy loads

Where they are used

Ceramic tile and porcelain kilns
Sanitary ware and tableware kilns
Glass tempering and glass bending lines
Metal heat-treatment furnaces with roller hearths

Keeping rollers in good shape

Rollers last longer when they are cleaned regularly, turned without stopping while the kiln is hot, and changed one at a time with care. Our article on ceramic rollers in roller kilns has more tips.

How to order

Please send us: the outside diameter, the wall thickness, the total length, the end shape (plain, grooved or with holes), the kiln zone and its temperature, and the product the kiln makes. If you have a sample or a drawing, it helps us match it exactly.