Machinery Lubrication India Jan Feb 14 10 | Page 33

For example, the truck may have four

much less expensive to sample and test

lubricants should then be labeled as

compartments:

a

7,500-gallon

oil than it is to repair a failure and suffer

satisfactory and placed into storage.

compartment,

a

5,000-gallon

the costs of downtime associated with

delivered today may require 7,000

If the potential exists for lubricants to

Establishing a Baseline for
Subsequent Testing and
Monitoring

gallons of oil “A,” 4,000 gallons of oil

be mislabeled or contaminated and you

In order to conduct accurate lubricant

“B,” 2,000 gallons of oil “C” and 1,500

are not currently taking steps to prevent

condition

gallons

Tomorrow’s

this unknown and untested lubricant

sample should be taken. This will allow

deliveries may require 6,700 gallons of

from contaminating your lubricants,

subsequent tests to be compared to the

oil “D,” 4,000 gallons of oil “C,” 1,200

you are in effect playing Russian roulette

baseline test when the lubricant was

gallons of oil “A” and 1,000 gallons of

with your machines. Even if you have

new. After all, if you have no idea where

oil “B”. With this type of delivery

been lucky so far, eventually you will

you started, how can you tell where you

schedule, cross-contamination is going

find the chamber with the live round.

are going? Once this baseline sample

to occur. Therefore, you should ask

New lubricants should be tested upon

has been obtained, it should be kept as

your supplier if each truck is cleaned

receipt and placed in quarantine until

a reference. You can then directly

prior to loading for the next trip. Also,

they are verified to be the correct

compare the lubricant’s color or smell

find out if the loading and unloading

lubricants. Once acceptable results

to that of the baseline sample. This will

hoses are cleaned. Remember, it is

come back from the lab, these

provide an immediate indication if

compartment and two 2,500-gallon
compartments.

of

The

oil

orders

“D.”

Renard Series Table

EXAMPLE PARTICLE COUNT
SIZE IN
MICRONS (C)
4
6
10

COUNT LARGER
THAN SIZE PER ML
1,752
517
144
55

14
20

25

50

0.27

100

R4 /R6 /R14
ISO 18/16/13

1.3

75

that failure.

being

0.08

1,752 particles > 4 µm/ml
517 particles > 6 µm/ml

55 particles > 14 µm/ml

4 µm
1,301
2,500
2,501

6 µm

5,000

1,300

321
640
641

14 µm
41
80
81
160

ISO CODE
18/16/13
18/16/13
19/17/14

4 times
one more
as many
particle
particles

19/17/14

If only two range numbers are used: ISO */16/13 or ISO 16/13

monitoring,

a

baseline

NUMBER OF PARTICLES PER ML
MORE THAN
5,000,000
2,500,000
1,300,000
640,000
320,000
160,000
80,000
40,000
20,000
10,000
5,000
2,500
1,300
640
320
160
80
40
20
10
5
2.5
1.3
0.64
0.32
0.16
0.08
0.04
0.02
0.01

UP TO AND
INCLUDING
10,000,000
5,000,000
2,500,000
1,300,000
640,000
320,000
160,000
80,000
40,000
20,000
10,000
5,000
2,500
1,300
640
320
160
80
40
20
10
5
2.5
1.3
0.64
0.32
0.16
0.08
0.04
0.02

RANGE NUMBER (R)
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

This illustration shows how different particle counts are assigned specific ISO codes.
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