NLGI 2
CUSTOMER BENEFITS
Chevron SRI Grease NLGI 2 delivers value through:
• 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 ASTM D1743-73 with 5% Synthetic Sea Water.
FEATURES
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 D1743-73 with 5% synthetic
sea water. 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.
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.
By : yunie@tridiftalubrindo.co.id
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