PT Kembla Coal Terminal

Bruce Chapple the Plant Mechanical Engineer responsible for pulleys at PKCT had indicated a rationalisation of the lagging types used to ceramic lagging for drive pulleys and Polyurethane lagging for all non-drive pulleys.

Elastotec recommended Hot Vulcanised (HV) Ceramic lagging in this application for the following reasons:

• 100% Rubber Tear bond between the lagging and the pulley shell
• No joins between strips eliminating the chance of water penetration and resulting pulley shell corrosion
• Ceramic tiles bonded into the rubber backing with rubber on the back and side of each tile. This provides much higher adhesion values reducing the chance of tile pull out plus cushioning from impact that can damage tiles.
• Aluminium oxide tiles based on 96% Al2O3 with a Vickers Hardness in excess of 1100 – this increases the wear resistance and toughness of the tiles with the benefit of increased lagging service life.
• Choice of Ceramic Lagging thickness of 12 mm,15 mm and 20 mm. The increased thickness of the rubber backing layer in the Elastotec HV Ceramic Lagging reduces the chance of slippage occurring between the lagging and the belt covers on high tension belts that can result in excessive belt cover wear and reduced belt life.