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Information Connection: Grease Compatibility

Grease. Did you know you can't mix just any grease with any other grease? It's true--doing so can cause catastrophic damage to equipment. And it's true even if the grease types are the same. Why is this?

Grease consists of two parts--the actual lubricant (normally oil) and a carrier, or base. Each has its own function. It's the carriers that are not compatible. Always know the base of the grease you are adding and the base of the grease you are adding to. Once you know those things, you can use the chart below to determine if you can add one grease to the other.

This grease compatibility chart will help you put the right greases together.

 

Grease Compatibility Chart

   B = Borderline
   C = Compatible
    I = Incompatible

Al

C
o
m
p
l
e
x

 Ba

C
o
m
p
l
e
x

Ca

S
t
e
a
r
a
t
e

Ca

12

H
y
d
r
o
x
y

Ca

C
o
m
p
l
e
x

Ca

S
u
l
f
o
n
a
t
e

C
l
a
y

N
o
n
s
o
a
p

Li

S
t
e
a
r
a
t
e

Li

12

H
y
d
r
o
x
y

Li

C
o
m
p
l
e
x

P
o
l
y
u
r
e
a

P
o
l
y
u
r
e
a

S

S
1 2 3 4 5 6 7 8 9 10 11 12

1. Aluminum Complex

X

I

I

C

I

 B

I

I

I

C

I

 C

2.  Barium Complex

I

X

I

C

I

C

I

I

I

I

I

 B

3.  Calcium Stearate

I

I

X

C

I

 C

C

C

B

C

I

 C

4.  Calcium 12 Hydroxy

C

C

C

X

B

 B

C

C

C

C

I

 C

5.  Calcium Complex

I

I

I

B

X

 I

I

I

I

C

C

 C
6.  Calcium Sulfonate B C C B I

X

 I B B C I C

7.  Clay Non-soap

I

I

C

C

I

 I

X

I

I

I

I

 B

8.  Lithium Stearate

I

I

C

C

I

 B

I

X

C

C

I

 C

9.  Lithium 12 Hydroxy

I

I

B

C

I

 B

I

C

X

C

I

 C

10. Lithium Complex

C

I

C

C

C

 C

I

C

C

X

I

 C

11. Polyurea Conventional

I

I

I

I

C

 I

I

I

I

I

X

 C
12. Polyurea Shear Stable C B C C C C B C C C C X

 

More lubrication items

People who read this article are also often involved in motor maintenance. See this course:

Motor Maintenance Course Motor Maintenance Explained
Reduce the costs of selecting, installing, maintaining, and replacing industrial motors. This course show you how to maintain motors effectively, efficiently, and safely.
This self-paced course requires no textbook or instructor.
 

 

 

 

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Grease sites

Lubrication sites
DuPont Performance Lubricants and Greases
greases and oils for industry
Quechem - Mfrs of Advanced Greases
Oils, oil, greases, grease
Lubeco,Inc. - a mfr of greases, lubricants, oils
Petroblend Lubricants and greases
Lubeserv Greases
  		 http://www.anylubricant.com
Castrol - Lubrication Solutions since 1899
Oil Analysis Noria Tribology PM
Lubrication systems, lubricating components
Lubricants and chemicals for commerical apps
Power Up Lubricants - oil, lubrication
Lubrizol
Forsythe Lubrication Associates Ltd. - Industrial Lubricants
Pro-Blend Products from Lubrication Dynamics
Trola-Dyne Custom Lubrication and Hydraulic Systems for Industry
MotorUP - A World Leader in Lubrication Technology
Learn more about Industrial Lubricants

 

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