1.
Chapter 9 WELDS
The bracket shown below supports a total load of
60 kN
. Using a safety factor of
4
and an
E60
series welding rod, what size weld should be specified?
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2.
Chapter 11 BEARINGS
A
No. 208
radial-contact ball bearing supports a shaft that rotates at
1200 rpm
. A radial load varies in such a way that
50, 30
and 20 percent of the time the load is
2,
5,
and
8 kN,
respectively. The loads are uniform so that the load application factor (Table 11-5) is
1
. Estimate the
L10
life and the median bearing life.
* A
No. 208
bearing is a single row
02 series
with a
40 mm
bore.
roov-lehk
mech_2240_case_study_3-s17.docx
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