Description
Castrol Molub-Alloy GM 90/220 (previously called Molub-Alloy™ 90/220) gear oils (SAE 90 / ISO VG 220) were developed for the lubrication of enclosed gears.
They are manufactured from the highest quality components that have been carefully selected for their compatibility with Molub-Alloy GM lubricating solids.
Application
- Molub-Alloy GM gear oils are recommended for spur, helical, herringbone, and straight or spiral bevel gears.
- They are especially suited for heavy duty and shock loading where Extreme Pressure (EP) characteristics are required. They should not be used where gear manufacturers specify the use of non-EP lubricants.
- For severe worm gear service where ‘compounded’ gear oils are recommended, please refer to Molub-Alloy GM 170w / 680.
- Molub-Alloy GM gear oil 300 S / 1000 is especially suited for service in enclosed gears for heavy-duty industry and mining machinery.
Advantages
- Reduced friction, most evident under boundary conditions, is directly attributed to the presence of specially compounded lubricating solids. This benefit is most pronounced where frequent start-up, slow speeds, and high and unexpected loads are encountered.
- The establishment of a protective layer of Molub-Alloy GM solids provides substantial increase in the working life of both parts and lubricant. This increases load bearing area which can reduce unit pressures operating temperatures, and wear.
- Realistic energy savings are possible through a reduction in peak power demand during cold start-up.
- Seal leakage is greatly reduced. Only compatible base oils that control rubber swelling tendencies are used. The Molub-Alloy GM solids lubricate and improve seal contact surfaces.
- Overall savings are derived from the above and result from less labour and downtime, smoother, more efficient operation with longer parts life, and extended lubrication cycles




