Ceramic Pulley Lagging

How it works

A layer of alumina tiles sits in a rubber base on the pulley shell. The ceramic grips the belt and resists wear; the rubber cushions the tiles and bonds them to the steel. The aim is to stop the belt slipping on the drive pulley, especially in wet, muddy or dusty conditions.

End view of a lagged drum and section through the lagging. Schematic.

Construction
Element	Options*
Ceramic	92 % alumina tiles or cylinders; dimpled for drive pulleys, plain for tail and bend pulleys; 95 % on request
Rubber	Natural or synthetic compound, chosen for the belt, temperature and wet or dry duty
Supplied as	Sheets of ceramic tile in rubber for you to apply, or lagging made to your pulley drawing
Fixing	Hot-vulcanised (heat and pressure) or cold-bonded (adhesive)
Sheet size	e.g. 500×500 mm or 1000×500 mm; other sizes to drawing

*Typical construction from partner factories; final specification is confirmed on the quotation.

Ceramic lagging sheet: dimpled square alumina tiles in ribbed rubber — PHOTO — ceramic lagging sheet: dimpled square tiles in ribbed rubber

Belt conveyor carrying crushed aggregate (illustrative image) — Where slip and wear start: loaded belts on aggregate and bulk-material conveyors. Illustrative image.

Alumina tiles set in rubber, close view — Tiles in rubber, close view

Lagging sheet with cold-bond backing layer peeled back — Cold-bond backing layer

Ceramic-lagged pulley in service — Lagged pulley in service

Two ways to fix it

Hot-vulcanised — strongest bond; the pulley is lagged in a workshop with heat and pressure.
Cold-bonded — adhesive applied by hand, suitable on site and for repairs.

Send the pulley size and how it will be fitted, and we recommend the method.

Limits

We supply material and sheets. Fitting, and any on-site vulcanising, is carried out by you or your local contractor.
Rubber limits the temperature; tell us if the belt runs hot or oils are present.
Ceramic lagging is worth it where slip is a repeated problem; plain rubber lagging costs less on dry, clean belts.

Belt conveyor in an underground mine roadway (illustrative image) — Wet, dusty and hard to reach: why drive pulleys are often lagged. Illustrative image.

What to send us

PulleyDiameter, face width, drive or tail
BeltWidth, speed, material carried
ConditionsWet, muddy, dusty, temperature, oils
FixingHot-vulcanised, cold-bonded, or open to advice
FormSheets for your applicator, or lagging made to drawing
QuantityNumber of pulleys or area

Download the duty sheet (Excel)

Questions

Hot-vulcanised or cold-bonded?

Hot vulcanising bonds the rubber to the shell with heat and pressure and gives the strongest, most durable bond; it needs a press or a skilled applicator. Cold bonding uses an adhesive and can be done on site, which suits repairs and pulleys that cannot be removed. Both are available; the choice depends on the pulley, the belt duty and who applies it.

Do you install the lagging?

No. We supply the lagging material or sheets, and lagging made to drawing. Fitting is done by you or by your local belt-service contractor.

Why ceramic instead of plain rubber lagging?

Ceramic raises the friction between pulley and belt, especially when the belt is wet or muddy, and the tiles resist wear that would polish plain rubber smooth. It costs more, so it is used where belt slip is a recurring problem.

Do you supply tiles only, for our own lagging production?

Yes. See ceramic components for lining makers.