Insert bearings in KML Cast Iron Mounted Bearing Units have sufficient high-grade grease installed after assembly. There is no need for replenishment during initial operation in new installations. KML bearing units normal grease content is about one third to one half of the internal space inside the bearing.
The performance of a bearing is greatly influenced by the quality and quantity of the grease. KML recommends a lithium based NLGI #2 grease. In order to avoid over filling, it is advisable to replenish the grease in small amounts. A hand grease gun should only require a few pumps per bearing for most sizes and conditions. Over lubrication is a major cause of bearing failure. Over filling can increase heat build-up in the bearing during operation which can lead to premature failure. Over filling can dislodge seals and flingers from their mounting position thereby interfering with the rotation of the bearing or destroying the integrity of the seal.
KML bearings are lubricated with Chevron SRI#2 from the factory. The grease used for replenishment should be checked for compatibility before application.
Bearing units are generally relubricatable from the factory. Depending on the operating conditions, relubrication on the bearings is not always necessary where environments are clean and temperatures are low. It is normal to see a small amount of grease at the edge of the flinger during and after operation. Grease deteriorates overtime and should be replenished. Lubrication intervals are a function of the environmental conditions coupled with the operating temperature. General lubrication intervals are shown in THE ACCOMPANYING CHART. There is no substitution for recommendations by the equipment manufacturer and/or observation by operators to determine the appropriate lubrication cycles.