324 Machine Drawing
dharm
d:\N-Design\Des18-3.pm5
20
f^96
5
f^96 f
192
2
(^3044)
4 HOLES, DIA 16
EQUI-SP
KEY WAY,
14×5
f 50
f 196
f 208
20
f^96
3
3
44 30
f^16
4
KEY WAY,
14×5
f^50
1
SLOPE,
1:100^10
76 14
5
Sl. No. Name Matl. Qty.
1
2
3
4
5
Shaft
Flange
Flange
Bolt with nut
Key
MS
CI
CI
MS
MS
2
1
1
4
2
Parts list
Fig. 18.41 Protected flanged coupling
Figure 18.42 shows various components of a bushed-pin type flanged coupling. Flanges 1
and 2 are mounted on the ends of shafts 3 by using sunk keys 5. The smaller ends of pins 4 are
rigidly fixed to the flange 2 by means of nuts, whereas the enlarged ends, covered with flexible
bushes 6, are positioned in the flange 1. The flexible medium takes care of mis-alignment if any,
and also acts as a shock absorber. These couplings are used to connect prime mover or an electric
motor and a centrifugal pump, electric motor and a reduction gear, etc. Figure 7.7 shows the
assembly drawing.
Exercise
Assemble the parts of the bushed pin type flanged coupling shown in Fig. 18.42 and draw, (i) half
sectional view from the front, with top half in section and (ii) view from the right.
18.5.5 Oldham Coupling
This coupling is known as a non-aligned coupling and is used to connect two parallel shafts,
whose axes are at a small distance apart. Figure 18.43 shows various parts of a Oldham coupling.
