Rolling Bearing Damage 2009 Part 2 potx
Rolling Bearing Damage 2009 Part 2 potx
... damage to dismounted bearings
FAG 12
12: Rolling bearing damage symptoms and their causes
Symptom Damaged area of bearing Typical causes of rolling bearing damage
Mounting
Seats Rolling Lip Cage ... heat)
2. 3 Inspection of bearing
environment
– Could surrounding parts have grazed
against bearing parts anywhere?
– Are any other parts close to the bear-
ing damaged (c...
Rolling Bearing Damage 2009 Part 3 pptx
... the bearing rings or seals,
figs. 21 , 22 .
Causes:
– Insufficient fixation of the bearings in
the housing or on the shaft
– Large amount of external contamina-
tion with narrow gap between bearing
and ... half its width supported
20 : Lip fracture of a tapered roller bearing cone due to insufficient axial support
of face
13 FAG
Symptom Typical causes of rolling bearing damage...
Rolling Bearing Damage 2009 Part 4 ppt
... ring
constant load direction
n
A
PP
n
J
PP
n
J
n
A
27
26
25 a
25 b
Evaluation of running features and damage to dismounted bearings
Pattern of rolling contact
3.3.1 .2 Unusual tracks
Whether tracks are considered ... approved additives
– Use bearing parts with surface coating
21 FAG
29 : Pressure-polished track
28 : Track with surface wear
• Tracks with misalignment
Symptoms:
In...
Rolling Bearing Damage 2009 Part 5 pot
... operation
29 FAG
Evaluation of running features and damage to dismounted bearings
Pattern of rolling contact
44: Reduction in life due to different contaminants
45: Fatigue damage caused by foreign particle ... surrounding parts
– Correct mounting
FAG 30
Evaluation of running features and damage to dismounted bearings
Pattern of rolling contact
46: Fatigue damage in groove bottom...
Rolling Bearing Damage 2009 Part 6 ppt
... flowing
through the bearing (earthing, insula-
tion).
– Use current insulated bearings.
FAG 38
Evaluation of running features and damage to dismounted bearings
Pattern of rolling contact
59: ... with rolling
bearing manufacturer's specifications
– Improvement in seals
– Use lubricant with corrosion inhibi-
tors
35 FAG
Evaluation of running features and damage to dismounted b...
Rolling Bearing Damage 2009 Part 8 docx
... flow,
more cleanliness)
– Use bearings designed for operating
conditions in question
– Coat cage
FAG 52
Evaluation of running features and damage to dismounted bearings
Lip contact
86: Bad contact ... adjustment of bearings
49 FAG
Evaluation of running features and damage to dismounted bearings
Lip contact
81: Skewing rollers caused seizure marks at the lip when in contact with its edges...
Rolling Bearing Damage 2009 Part 9 ppsx
... soft-centered
20 000 fold : 0 .25 µm
2. 5
0 .25
0. 025
0.0 025
R
0 2. harmonic 0.5043 µm 150
0° 90° C 27 0° 360°
3.5.3 Wear due to roller skewing
Symptoms:
Roller skewing results when roller
bearings carry ... and
Dismounting of Rolling Bearings").
57 FAG
Evaluation of running features and damage to dismounted bearings
Cage damage
94: Melted fase of plastic cage in the case...
Rolling Bearing Damage 2009 Part 10 ppsx
... 47781 44543
Nickel 23 1,604 1,778 4 114 62 38487 21 640
Vanadium 311,071 0,937 -37 5 45 6 422 8 68560
Tungsten 400,875 0,7 42 -16 4 26 14 129 19053
Silicon 25 1,611 2, 173 310 509 92 2385 955
sample: solids ... 22 8,616 1,673 26 8 9 62 415 179515 107157
Manganese 25 7,610 1,318 -76 - 121 -34 67816 51496
Chromium 26 7,716 1,476 381 669 195 76696 51688
Copper 324 ,754 0,834 -471 80...
Rolling Bearing Damage 2009 Part 11 pot
... Germany:
Phone 0180 50038 72
Fax 0180 5003873
From other countries:
Phone +49 91 32 82- 0
Fax +49 91 32 82- 4950
Notes
4.7 Calculation of load
conditions
In several cases bearings, whose load
situation ... Schaeffler Technologies GmbH & Co. KG
Issued: 20 10, December
This publication or parts thereof may not
be reproduced without our permission.
WL 82 1 02/ 3 EA
Schaeffler Technolog...
Dynamics of Mechanical Systems 2009 Part 2 potx
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