BOGIES AND SUSPENSION - South Central Railway
BOGIES AND SUSPENSION - South Central Railway
BOGIES AND SUSPENSION - South Central Railway
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CHAPTER 6 – <strong>BOGIES</strong> <strong>AND</strong> <strong>SUSPENSION</strong><br />
c) HORN CHEEK<br />
WAGON MAINTENANCE MANUAL<br />
Page 64 of 121<br />
It is a “L” shaped piece made of steel to IS: 226 or IS: 1875 for wagon stock.<br />
One left-handed and one right-handed horn cheek is required for one axle guard. (On<br />
coaching stock, in addition to steel, cast iron Grade 17 horn cheeks are also used.<br />
Care should be exercised so that cast iron horn cheeks meant for coaching stock are<br />
not used on wagon stock). It is finish machined all over except on vertical edge of<br />
long leg and top and bottom surfaces. The shorter leg is fixed perpendicular to the<br />
track and the longer leg is riveted with a packing plate in between them. The topmost<br />
rivet is countersunk having chamfered edge on the outer surface of the axle<br />
guard (not on horn cheek). The horn cheeks have two suitable recesses on the top and<br />
one at the bottom. It is important that the rivet holes are drilled at correct locations.<br />
The important sizes of horn cheeks are :-<br />
MG BG<br />
Thickness 12 mm 19 mm<br />
Leg Size 82 x 36(+0.5/-0.0) mm 95x45 mm<br />
Height 317(+0.0/-3) mm 419 (+/-3) mm for CI and<br />
406 mm for steel<br />
Rivet hole dia 21.5 mm for 20 mm rivets (for both)<br />
Distance of centre 47 mm 57 mm<br />
line of rivet holes<br />
from bent corner<br />
d) TIE BAR (BRIDLE BAR)<br />
It is made of steel to specification No. IS: 226. BG Axle Guard tie is of angle<br />
section having rivet holes 2 at each end. MG tie bar made out of a plate and its ends<br />
are bent at 90 o and are inclined to match the inclined edge of the axle guard leg. It<br />
has 2 rivet holes one on either end. The bridle bar is riveted on either end to the jaws<br />
of left handed and right handed axle guards respectively. The turned ends of the<br />
bridle bar does not allow the bridle bar to fall in case one of the rivets break, because<br />
the same remains sticking with axle guard leg. The important sizes for Tie bars are :-<br />
MG BG<br />
Thickness 12 mm ISS50 50X6<br />
Dia of rivet hole 17.5 mm for 16 mm rivets<br />
e) AXLE GUARD PACKING<br />
It is made of steel plate to specification No. IS:226. The size for BG is 586 x<br />
75 x 10 mm & for MG is 387 x 55 x 12 mm thick. One edge out of 4 has a radius (6<br />
mm on MG) (10 mm on BG). It is rectangular plate having 5 rivet holes. Distance<br />
from the rounded edge is 28 mm for BG and 27 mm MG. The dia of rivet holes is<br />
21.5 mm to suit 20 mm rivets. This piece is fitted between the Axle Guard and horn<br />
cheek of pressed steel type axle guards.
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