Bearings 185
dharm
d:\N-Design\Des12-1.pm5
Light series
Medium series
Heavy series
Single row ball bearing
Double rowball bearingAngular contactball bearingCylindricalroller bearingTaper rollerbearing
Needle bearingThrust ball bearing
Fig. 12.13 Types of anti-friction bearings
Figure 12.14 illustrates the application of a self-aligning double row ball bearing in a
plummer block. Students are advised to refer manufacturer's catalogues to know the various
types and sizes, including their load carrying capacities.
115
75
15 15
7 4 4 7
18
18
18
f
75
f
75
f
60
f
122
2 R57 R50
f 25
M12
f
70
3
6 15 48
f
84
f
88
f 150
f
96
f^60
9
26 24
12
96
275
933 33
175
148
M12
50
3
150
75
5
20
9
f 21
Fig. 12.14 Plummer block with double row self-aligning ball bearing
12.3.2 Thrust Bearings
These bearings are used to support shafts subjected to axial loads. In general,balls as
rolling elements are used in these bearings and rollers only in special cases.
Figure 12.15 shows the mounting of a shaft with a thrust ball bearing.
Figure 12.16 illustrates a foot-step bearing with a thrust ball bearing to resist axial
loads and a radial ball bearing to position the vertical shaft and also to resist the possible
radial loads.
Figure 12.17 shows the application of taper roller bearing, thrust ball bearing and a
double row ball bearing in a revolving centre.
