Extended Information:
Chevron SRI Grease is a high temperature ball and roller bearing grease.
It is formulated with ISO SYN® base stocks, a modern
ashless, organic polyurea thickener coupled with high
performance rust and oxidation inhibitors (the latter to
provide superior rust protection in severe applications
that many electric motors applications are exposed to
in field operations). Its texture is smooth and buttery
and its color is dark green.
As noted, Chevron SRI Grease NLGI 2 passes the
Bearing Rust Test, ASTM D5969 with 10% synthetic
sea water. It also is rated at a 1a on the ASTM D4048
Copper Corrosion Test. These properties help to
provide longer bearing life under high speed and high
temperature operation than most other widely used
antifriction bearing greases. High Temperature Bearing
Life, ASTM D3336, testing shows that the life of a
204 K bearing lubricated with Chevron SRI Grease
NLGI 2 and operating at 150°C (302°F) and
10,000 rpm is about 3,000 hours. This is nearly 10
times the life possible when using conventional lithium
greases. Under normal operating temperatures and
conditions, Chevron SRI Grease NLGI 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. In these instances, Chevron Black Pearl® Grease EP
would be the grease of choice and is fully compatible to
use with Chevron SRI Grease.
Features
- Wide application range - Suitable for high rpm
operation, operating temperatures ranging from
-29°C to 177°C (-20°F to 350°F).
- Excellent oxidation stability - Provides
exceptional bearing life at operating temperatures in
the range of 93°C to 177°C (199°F to 350°F).
- Excellent rust protection - Provides exceptional
rust protection as defined by Bearing Rust, ASTM
D5969 using 10% Synthetic Sea Water and also
does extremely well on the Dynamic Bearing Rust
(EMCOR) Test, ASTM D6138 using 10% Synthetic
Sea Water.
Applications: Chevron SRI Grease NLGI 2 is recommended: - 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
It performs satisfactorily in bearings at temperatures
as low as -29°C (-20°F).
Applications where Chevron SRI Grease will outperform
most other greases include:
- As a "Life Pack" lubricant by manufacturers of
automotive generators, alternators, and starters to
protect against the effects of moisture and roadsplash
(factory-filled for life ball bearings)
- Bearings on air-conditioning units in homes and
other buildings
- Unsealed electric motor bearings operating under
moist conditions
- Applications where silent operations are beneficial
Original Equipment Manufacturers that specifically
recommend Chevron SRI Grease NLGI 2 are:
- Bearing manufacturers: NSK, NTN, FAG, NMB,
and Koyo.
- Electric motor manufacturers: Reliance Electric
Company, U.S. Motors Division of Emerson Electric
Company, Toshiba International, and Lincoln Motors.
Chevron SRI Grease NLGI 2 is certified by NSF and is
acceptable as a lubricant where there is no possibility
of food contact (H2) in and around food processing
areas. The NSF Nonfood Compounds Registration
Program is a continuation of the USDA product
approval and listing program, which is based on
meeting regulatory requirements of appropriate use,
ingredient review and labeling verification.
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