Technical Guides

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

In a crane or hoist drive train, the coupling between the motor, gearbox, and hoist drum is the mechanical link that transmits every newton-metre of torque from the power source to the load. It is also the component that must absorb every misalignment, thermal expansion, and shock load in the system