Operation
3303−1/A1
Winterthur Gas & Diesel Ltd.
1/ 1
Connecting Rod and Connecting Rod Bearing
1. General
The connecting rod connects the crosshead to the crankshaft and converts the linear
movement of the piston into a circular movement.
Bearing shells (4, 5, and 6, Fig. 1) (that can be replaced) are installed on the
connecting rod (1) for the bottom end bearing and top end bearing.
The top bearing cover (3) is lined with white metal.
2. Lubrication
Crosshead lubricating oil flows through the connection (CO) to the top end bearing,
and holes in the crosshead pin let lubricating oil flow to the guide shoes. Crosshead
lubricating oil flows through the oil bore (OB) in the connecting rod (1) to the bottom
end bearing.
Bearing oil flows through the connection (PC) for piston cooling through the related oil
bores in the crosshead pin and piston rod.
7
OB
12
10
1
8
11
12
6
2
3
4
9
9
5
CO
PC
WCH01177
Fig. 2: Connecting Rod and Connecting Rod Bearing
1 Connecting rod 9 Allen screw
2 Bottom bearing cover 10 Round nut
3 Top bearing cover 11 Round nut
4 Bearing shell (top end bearing-crosshead) 12 Cylindrical pin
5 Bottom bearing shell (bottom end bearing)
6 Top bearing shell (bottom end bearing) CO Crosshead lube oil inlet
7 Elastic bolts (top end bearing) OB Oil bore
8 Elastic bolts (bottom end bearing) PC Piston cooling oil inlet
2014
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