MACHINERY LUBRICATION- INDIA SEPTEMBER-OCTOBER 2019 | Page 13

MLI
and written codes. For example, a
hydraulic oil may have a square lube
identification tag, while a grease may
have a round tag.
Quality Control at Reception
This element specifies the tests to be
conducted on lubricants entering the
facility in order to verify product quality.
Here it is necessary to define laboratory
or field tests as well as the acceptable
results or limits. ASTM methods, test
equipment, field test kits and product
inspections may be referenced. See the
example below.
Product Compatibility
This describes the concerns or
characteristics of the product’s
compatibility with other lubricants as
well as with synthetic materials existing
in machine lubrication systems, such as
seals and gaskets. This section may
have added importance when the
standard refers to synthetic lubricants
or special formulas, since they may
require specific procedures when
switching to other lubricants. For
example, this product is manufactured
with polyalkylene glycol (polyglycol)
base stock, which is not compatible
with mineral oils and other synthetics
such as polyalphaolephins. machine(s) in which the product is
intended to be used. They may come
from original equipment manufacturers
(OEMs) or other industry organizations,
such
as
the
American
Gear
Manufacturers Association (AGMA),
the National Lubricating Grease
Institute (NLGI), etc. Please note that
some lubricants may claim a
certification or approval for certain
technical
standards
or
OEM
specifications, while others may only
“comply with” the standard or
requirement but are not necessarily
approved or certified. This may be
particularly significant when complying
with equipment warranty requirements.
Product Approvals Potential Restrictions and Hazards
These are the lubricant approvals or
endorsements required by the specific This section describes any undesired
ingredients or product properties as
well as toxicological or safety aspects to
be considered when buying or handling
the lubricant. For example, the product
must not have mutagenic or
carcinogenic compounds.
INCOMING LUBRICANT QUALITY TEST - HYDRAU-
LIC OIL ISO VG 68
TEST OR
PROPERTY
Viscosity at
20°C (cSt)
BASE
Field
viscometer
MIN. MAX.
170
200
Acid number
(mg KOH/g
Field test kit
of oil) 1.1 1.4
Particle
count Particle counter
/ ISO 4406:99 - - - 19/16/13
Moisture
analysis
(ppm) Calcium
hydride kit - - - 500
Lubricant Identification System
Every lubricant to be used in the plant
should have a unique identification
code to prevent mislabeling or
misapplication.
The
classification
should be independent of the brand
name. In a proper identification system,
every product will have unique visual
Supplier Requirements
This section identifies the requirements
for the lubricant supplier relating to
product quality. For example, the
supplier should be ISO 9000-certified,
or every batch of lubricant should be
sent with a certificate of analysis. The
lubricant supplier approval process can
provide more detailed information
about the supplier.
Lubricant Disposal
This element provides general or
specific requirements for lubricant
disposal based on the product type,
formula, contaminants and lubricant
volumes. These requirements should be
defined according to local regulations
and corporate policies.
53 %
of lubrication professionals say
their plant has created lubricant
specifications to aid in the lubricant
selection process, according to a
recent poll at
MachineryLubrication.com
www.machinerylubricationindia.com
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