Bearings 181
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d:\N-Design\Des12-1.pm5
Pillar brackets
Figure 12.7 shows a pillar bracket, with a pedastal bearing mounted on it; the main body being
integral with the bracket. It may be noted from the figure that this bracket has the minimum
overhang when compared with a wall bracket. This is because, in the case of a piller bracket,
the pulleys mounted on the shaft do not interfere with the pillar.
Hanger bearings
Hanger bearings support a shaft running parallel to a beam or ceiling of a room. The hangers
are suspended by means of bolts and nuts. These are generally named after their shapes; the
most commonly used types being J-hangers and U-hangers.
In the case of a J-hanger, the bearing is supported by a single arm and in the case of a U-
hanger, the bearing is supported between two arms. Figure 12.8 shows the J-type hanger with
the pedastal bearing integral with the hanger body.
12.2.1.5 Thrust Bearings
Thrust bearings are used to support shafts subjected to axial loads. These bearings are classified
into: pivot or foot-step bearings and collar bearings.
205
50 3 50
16 12 R20^18
158
18
200
20 10 12^32
5
22
5
55 5
22
44
ff^2525 R20
19
5
8 R25
f 20
86
45
150
12.5
5
25
5 14 3
45
35
25
45
12
2525
R35
Fig. 12.8 J-hanger with a pedastal bearing
Pivot or foot-step bearing
This bearing is used to support a vertical shaft under axial load. Further, in this, the shaft is
terminated at the bearing. The bottom surface of the shaft rests on the surface of the bearing
which is in the form of a disc. The bush fitted in the main body supports the shaft in position
and takes care of possible radial loads coming on the shaft.
