Cement and aggregate facilities are dusty, dirty, humid environments. Sand, gravel, crushed stone and water are in use in many forms throughout the facility. Keeping solid particles and water vapor out of oils and machinery is important.
Mobile equipment such as cranes and shovels are used to move materials around the facility or place them on conveyor systems. They are also used to dig or dredge the sand and gravel from lakes, rivers and streams. Hydraulic systems and gearboxes on the mobile equipment are subjected to dust and humidity continuously. Protecting the oils from water vapor and solid particulates keeps the systems running smoothly.
Bulk material handling terminals load, unload and store the fine and coarse aggregates. The conveyor systems are used to move various materials. Each system is equipped with large drives, gearboxes and bearings that have oil and lubrication reservoirs. Air Sentry® breathers provide protection from airborne dust and moisture.