Black Pearl SRI 2
is a high temperature ball and roller bearing grease. It is formulated with highly refined base stocks, a modern ashless, organic polyurea thickener coupled with high performance rust and oxidation inhibitors (the latter to provide outstanding rust protection in severe applications that many electric motor applications are exposed to in field operations). Its texture is smooth and buttery and its color is dark green.
Black Pearl SRI 2 passes the Static Bearing Rust Test, ASTM D5969, with 10% synthetic sea water. These properties help to provide longer bearing life under high speed and high temperature operation. This is nearly 10 times the life possible when using conventional lithium greases. Under normal operating temperatures and conditions, Black Pearl SRI 2 can be used as a “Life Pack” lubricant in sealed bearings.
Note that in today’s more modern, high output (horsepower), high load electric motors, there are times where these units employ ball bearings and roller element bearings on the same motor. On units where horsepower and load are considered high on the roller element bearing, EP greases should be employed.
Benefits for your application
Viscosity: NLGI 2
Service Temperature Range: -22° F - 350° F
For use in a wide range of automotive and industrial applications
For use in antifriction bearings operating at high speeds (10,000 rpm and greater)
Where the operating temperatures are on the order of 150°C (302°F) and higher
Where there is a likelihood that water or salt water will get into the bearings
Black Pearl SRI 2 will perform in bearings at temperatures as low as -30°C (-22°F)
