SKF TKGT 1, Инструкция по эксплуатации

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36 SKF TKGT 1
4.3 Grease selection
Application conditions:
• Spherical roller bearing 22213 E/C3.
• Speed : 2390 rpm, n.dm=200 000.
• Load C/P: 31 - Low.
• Temperature self induced (80-90C).
• Quantity lubricant: 20 grams (0.7 oz).
• Sampled from cage.
Two greases tested (Same running time):
• A - Lithium/Mineral EP NLGI 2.
• B- Lithium/PAO NLGI 2.
Nature of analysis:

Shelf life/Quality

Routine control

Damage

Grease performance

Trend analysis

Change of grease

Contamination expected

Other reasons: ..........................................................
Testing
Sample First visual
inspection
(3.3) Consistency test
(3.4) Oil bleeding test
(3.5) Contamination
test (3.6)
Fresh unused
A Brown
NLGI class:
2
DAvFresh :
29
mm
SFresh :
581 mm 2
Used:
A
Darkening,
many carbonized
particles, strong
smell, oily
NLGI class:
3
NLGI difference:
+1
DAvUsed :
23 mm
SUsed :
336 mm
2
%Diff :
-42
Yes – Many
big carbonized
particles –
Some small
metallic
particle
Fresh unused:
B White
NLGI class:
2
DAvFresh :
44 mm
SFresh :
1441 mm
2
Used
B Darkening, oily
NLGI class:
2.5
NLGI difference:
+0.5
DAvUsed :
40 mm
SUsed :
1177 mm
2
%Diff :
-18
Yes but
restricted and
very fine.
Dispersed
Interpretation
Sample A:
Sample B:
Advanced grease degradation.
Sample in good condition.
X