Castrol Molub-Alloy 1500
Castrol Molub-AlloyTM 1500 gear oil is a severe duty, Extreme Pressure (EP) gear oil designed to meet the
increasing lubrication needs and specifications of manufacturers of modern industrial and mining equipment such
as walking draglines. To withstand the surging pressures and sudden reversal in speed and direction of hoist and
drag gears and the great torque experienced in swing and propel gears, the ultimate in oil film forming and
persistence is required.
Molub-Alloy 1500 gear oil is a blend of high quality, petroleum base stocks and additives designed for very heavy
duty and severe service. Viscosity is in the ISO viscosity grade 1500.
High viscosity is achieved naturally by a blend of select petroleum base stocks and not by the addition of viscosity
modifiers which could shear to a lower viscosity in service. High film strength is assured by temperature stability
and by the tendency for Molub-Alloy lubricating solids in stable suspension to prevent high temperatures from
occurring under extreme pressures during boundary (contact) lubrication.
Extreme Pressure (EP) characteristics are derived from chemical EP additives combined with a blend of Molub-
Alloy lubricating solids in very stable suspension. Molub-Alloy 1500 is non-corrosive to all ferrous and non-ferrous
metals. The lubricating solids are selected specifically for heavy duty gear service.
Rust and oxidation inhibiting characteristics are maximized for rust protection and long life of the oil. Foaming is
controlled by the use of special components and inhibitors.
Molub-Alloy 1500 is designed for service in enclosed gear systems in heavy duty industrial and mining equipment
including walking draglines, shovels, and other large excavators. Gear types include helical, bevel, spiral bevel,
and others subject to extreme pressures and severe shock loads.
Molub-Alloy 1500 has also found use in replacing grease in applications where