A certain application requires a ball bearing with the inner ring rotating, with a design life of 26 kh at a speed of 425 rev/min. The radial load is 2.5 kN and an application factor of 1.2 is appropriate. The reliability goal is 0.9. Find the multiple of rating life required, XD, and the catalog rating 10 with which to enter a bearing table. Choose a 02-series deep-groove ball bearing from Table 11-2 and estimate the reliability in use. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
A certain application requires a ball bearing with the inner ring rotating, with a design life of 26 kh at a speed of 425 rev/min. The radial load is 2.5 kN and an application factor of 1.2 is appropriate. The reliability goal is 0.9. Find the multiple of rating life required, XD, and the catalog rating 10 with which to enter a bearing table. Choose a 02-series deep-groove ball bearing from Table 11-2 and estimate the reliability in use. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Jack Erjavec, Rob Thompson
Chapter34: Emission Control Diagnosis And Service
Section: Chapter Questions
Problem 5RQ: Explain why the I/M 240 and similar tests are being replaced by the OBD II system test.
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Transcribed Image Text:A certain application requires a ball bearing with the inner ring rotating, with a design life of 26 kh at a speed of 425
rev/min. The radial load is 2.5 kN and an application factor of 1.2 is appropriate. The reliability goal is 0.9. Find the
multiple of rating life required, XD, and the catalog rating C10 with which to enter a bearing table. Choose a 02-series
deep-groove ball bearing from Table 11-2 and estimate the reliability in use.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
For a C10 value of 30.7 kN, what is the reliability using the design factor, force, speed, and desired life from part a?
The reliability is 0.129
Transcribed Image Text:Shoulder
Load Ratings, KN
Fillet
Diameter, mm
Deep Groove
Angular Contact
Bore,
OD,
Width,
Radius,
mm
mm
mm
mm
ds
dμ
C10
Co
C10
Со
10
30
9
0.6
12.5
27
5.07
2.24
4.94
2.12
12
32
10
0.6
14.5
28
6.89
3.10
7.02
3.05
15
35
11
0.6
17.5
31
7.80
3.55
8.06
3.65
17
40
12
0.6
19.5
34
9.56
4.50
9.95
4.75
20
47
14
1.0
25
41
12.7
6.20
13.3
6.55
25
52
15
1.0
30
47
14.0
6.95
14.8
7.65
30
62
16
1.0
35
55
19.5
10.0
20.3
11.0
35
72
17
1.0
41
65
25.5
13.7
27.0
15.0
40
80
18
1.0
46
72
30.7
16.6
31.9
18.6
45
85
19
1.0
52
77
33.2
18.6
35.8
21.2
50
90
20
1.0
56
82
35.1
19.6
37.7
22.8
55
100
21
1.5
63
90
43.6
25.0
46.2
28.5
60
110
22
1.5
70
99
47.5
28.0
55.9
35.5
65
120
23
1.5
74
109
55.9
34.0
63.7
41.5
70
125
24
1.5
79
114
61.8
37.5
68.9
45.5
75
130
25
1.5
86
119
66.3
40.5
71.5
49.0
80
140
26
2.0
93
127
70.2
45.0
80.6
55.0
85
150
28
2.0
99
136
83.2
53.0
90.4
63.0
90
160
30
2.0
104
146
95.6
62.0
106
73.5
95
170
32
2.0
110
156
108
69.5
121
85.0
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