German Coding Of Greases

German Coding Of Greases (DIN 51502)

Grease code example: K E 2 C 20

Letter for application is in the first box

K	=	Greases for roller and journal bearings
KP	=	Greases Containing EP and/or AW additives
KF	=	Greases Containing solid lubricants
KPF	=	Greases Containing EP and/or AW and solid lubricants
G	=	Greases for closed gears
OG	=	Greases for open gears
M	=	Greases for journal bearings and seals

Letter for fluid type is in the second box

E	=	Synthetic esters
FK	=	Perfluoropolyethers
HC	=	PAO
PH	=	Phosphate esters
PG	=	Polyalkyleneglycols
SI	=	Silicon fluid
X	=	Others

Number for NLGI number (see NLGI chart) is in the third box

Letter for high temperature limit and water resistance is in the fourth box

	Highest Operating Temperature, C	Water Behavior (DIN 51807)
C	+60		0-40 or 1-40
D			2-40 or 3-40
E	+80		0-40 or 1-40
F			2-40 or 3-40
G	+100		0-90 or 1-90
H			2-90 or 3-90
K	+120		0-90 or 1-90
M			2-90 or 3-90
N	+140		n/a
P	+160		n/a
R	+180		n/a
S	+200		n/a
T	+220		n/a
U	>220		n/a

Number for low temperature limit is minus degrees C which is in the fifth box

Example Lowest temperature, C

10 -10

40 -40

Hence in the grease code example (KE2C20) shown above it is encoded as follows: A synthetic ester grease, NLGI #2 designed for roller or journal bearings with an operating range of –20 to + 60 C with good water resistance.

K = Application roller/journal.

E = Fluid type is Synthetic ester.

2 = NLGI grade 2.

C = High temperature limit/water resistance...(C = +60 C and 1-40).

20 = Low temperature limit = –20 C.

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