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How to mix different types of greases

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  • Time of issue:2022-04-22 15:04
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(Summary description)

[Top]

How to mix different types of greases

(Summary description)

Information

When you start to use a new grease in an application, it is important to know whether the new and the old grease are compatible. This depends on whether the thickener and/or the base oil can mix with each other. A number of things can happen when two different greases are mixed:

  • Nothing, i.e. the two greases are miscible

  • The grease mix hardens, which can be devastating in, say, a central lubrication system

  • The grease mix softens. The soap structure is broken down and the greases are not miscible. This can cause leakage and bearing failure

  • We can help with miscibility tests ahead of product changes to avoid problems in advance. Feel free to contact us if you need help.

Thickeners - miscibility

Thickener

Li

LiX

Ca

CaH

CaX

CaSX

Clay

ALX

BaX

PU

Na

NW

Lithium (Li)

 

+

o

+

-

+

o

-

o

o

-

+

Lithium complex (LiX)

+

 

+

+

+

+

-

+

o

-

o

+

Water-stabilised calcium (Ca)

o

+

 

+

-

+

o

-

o

o

o

+

Water-free calcium (CaH)

+

+

+

 

o

o

+

+

o

-

-

+

Calcium complex (CaX)

-

+

-

o

 

+

o

o

-

+

o

+

Calcium sulfonate complex (CaSX)

+

+

+

o

+

 

-

-

o

+

-

+

Clay

o

-

o

+

o

-

 

-

o

o

o

+

Aluminium complex (AlX)

-

+

-

+

o

-

-

 

+

o

-

+

Barium complex (BaX)

o

o

o

o

-

o

o

+

 

o

+

+

Polyurea (PU)

o

-

o

-

o

+

o

o

o

 

o

+

Sodium (Na)

-

o

o

-

o

-

o

-

+

o

 

+

NOVAWAY Technology (NW)

+

+

+

+

+

+

+

+

+

+

+

 

+ = Compatible |  o = Miscibility test required |  - = Not compatible

The above table is based on the type of thickeners only. Please note that different types of additive may affect miscibility.

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