Technical Guides

Ball Mill Trunnion Bearing: White Metal (Babbitt) vs Rolling Element, Hydrodynamic Lubrication, and Failure Mode GuideA ball mill or SAG mill in a cement or mineral processing plant may weigh 1,000–5,000 tonnes when fully charged with grinding media and ore. This entire rotating mass is supported at

Rotary Kiln Tyre (Riding Ring) and Support Roller: Contact Stress, Tyre Migration, Alignment, and Failure Mode GuideIn a cement or lime plant, the rotary kiln is the single most capital-intensive piece of rotating equipment on site. A 5-metre diameter, 80-metre long cement kiln weighs 800–1,200 tonn

Conveyor Pulley Selection: Shaft Design, Belt Tension, Lagging, and Failure Mode GuideA conveyor pulley is not a commodity component. In a bulk material handling system moving 3,000 tonnes per hour of iron ore or coal, the drive pulley transmits hundreds of kilowatts of power through a shaft that ma

Belt Conveyor Idler Roller Selection: CEMA Series, Load Rating, Bearing Life, and Failure Mode GuideIn bulk material handling, the idler roller is the most numerous and most frequently replaced component in any belt conveyor system. A single overland conveyor may carry 10,000 to 30,000 idler rollers

Industrial Helical and Bevel-Helical Gearbox: Selection, Torque Rating, and Service Factor GuideA gearbox failure in a cement kiln drive, a mine conveyor, or a crane hoist is never just a mechanical event. It is a production stoppage — measured in hours of lost output, tonnes of unprocessed material

Rolling Mill Rolls: Work Roll and Backup Roll Material Selection, Hardness, and Failure Mode GuideIn a rolling mill, the rolls are simultaneously the most critical and the most consumed components. A work roll in a hot strip finishing stand may roll 3,000–8,000 tonnes of steel before it is pulled fr