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Regulation for Greases ISO 6743-9

 

 

ISO (International Organization for Standardization)

The ISO 6743-9 Standard is the classification of the family X (Greases), that is included in the ISO 6743 Standard (Lubricants, industrial oils and related products-class L).

The detailed classification of this Standard is based on the operating conditions of the grease use, and not in its information.

In accordance with ISO 8681, the comlete designation of a grease includes:

ISO-L-X-Symbol 1-Symbol 2-Symbol 3-Symbol 4- NLGI Grade, Where:

 

L : Lubricant, industrial oil or related products

X : Grease

Symbol 1 : Lower operating temperature:

 

0ºC

A

-20ºC

B

-30ºC

C

-40ºC

D

<-40ºC

E

 

Symbol 2: Upper operating temperature

 

60ºC

A

90ºC

B

120ºC

C

140ºC

D

160ºC

E

180ºC

F

>180ºC

G

 

Symbol 3: Level of anti-rust protection, based on environmental conditions.

 

Ambiente exterior 1)

Antiherrumbre 2)

Símbolo 3

L

L

A

L

M

B

L

H

C

M

L

D

M

M

E

M

H

F

H

L

G

H

M

H

H

H

I

 

 

Outside Ambient 1)

L: Dry
M: Static moisure
H: Water wash

Antirust 2)

L: No protection
M: Protect in the presence of fresh-water
H: Protect in the presence of salt water

 

Symbol 4: Ability of the grease to lubricate in presence of high or low loads. Extreme preasure (EP) propierties.

 

EP Grease

A

No EP Greases

B

 

NLGI Grade: Consistency.

 

000

00

0

1

2

3

4

5

6

 

 

 

 

ISO-L-X-Symbol 1-Symbol 2-Symbol 3-Symbol 4- NLGI Grade, Where:

L : Lubricant, industrial oil or related products
X : Grease
Symbol 1 : Lower operating temperature: