Operation3603−1/A1
Winterthur Gas & Diesel Ltd.
2/ 2
Key to Fig. 1: Articulated Lever − Location
1 Piston rod 10 Connecting rod
2 Guide shoe 11 Crosshead pin
4 Support 12 Bore (crosshead lubricating oil)
5 Column 17 Oil inlet (crosshead lubrication)
6 Bottom lever OB Oil bore (crosshead lubricating oil to
7 Top lever bottom end bearing)
8 Connection piece OI Oil inlet
9 Top end bearing shell RS Ring space (crosshead lubricating oil)
3. Piston Cooling
Bearing oil flows from the oil inlet (OI) through the support (4), the bottom lever (6)
and the top lever (7) to the connecting piece (8). The oil flows through the bore (13)
into the ring space (15) in the crosshead pin (11), through bores in the top end
bearing shell (9) and the bores (14). The oil flows outside the oil pipe (3) through the
piston rod (1) to the piston.
The oil then flows inside the oil pipe (3) through the oil return (OR) to the center bore
in the crosshead pin (11) to the crankcase. Some of the piston cooling oil is used to
lubricate the guide shoes (2) and the guide shoe pins, see Fig. 2 (for more data, see
3326−1 Crosshead and Guide Shoe).
OR
3
7
8
13
2
1
14
10
15
9
016.786
08
PC
11
Fig. 2: Cross-section through Crosshead
1 Piston rod 11 Crosshead pin
2 Guide shoe 13 Bore (piston cooling oil)
3 Oil pipe 14 Bore (in the crosshead pin)
7 Top lever 15 Ring space (piston cooling oil)
8 Connecting piece
9 Top end bearing shell PC Piston cooling (oil inlet)
10 Connecting rod OR Oil return
Crosshead Lubrication and Piston Cooling
2014
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