Both KML Industrial Grade & Premium Grade Deep Groove Ball Bearings are lubricated with Chevron SRI#2 from the factory. They are considered Lubed-for-Life.
Chevron SRI#2 is a high temperature ball and roller bearing grease. It is recommended in a wide range of automotive, industrial applications and in anti-friction bearings operating at high RPM’s. It is formulated using a synthetic polyurea ashless organic thickener with additional rust and oxidation inhibitors. This grease provides superior corrosion protection in severe applications in the presence of both salt and fresh water.
The temperature range of the Chevron SRI#2 is -20°F to 350°F (-29°C to 177°C). It provides excellent bearing life at operating temperatures of 185°F to 230°F (85°C to 110°C). KML nitrile rubber seals will begin to deteriorate above 230°F temperature. KML bearing units normal grease content is about 30-40% of the internal space inside the bearing.