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the turning effect of the friction and to obtain uniform distribution of pressure between the piston and
the cylinder liner.
The material used for the piston pin is usually case hardened steel alloy containing nickel,
chromium, molybdenum or vanadium having tensile strength from 710 MPa to 910 MPa. Fig. 32.6. Full floating type piston pin. The connection between the piston pin and the small end of the connecting rod may be made
either full floating type or semi-floating type. In the full floating type, the piston pin is free to turn
both in the *piston bosses and the bush of the small end of the connecting rod. The end movements of
the piston pin should be secured by means of spring circlips, as shown in Fig. 32.6, in order to prevent
the pin from touching and scoring the cylinder liner.
In the semi-floating type, the piston pin is either free to turn in the piston bosses and rigidly
secured to the small end of the connecting rod, or it is free to turn in the bush of the small end of
the connecting rod and is rigidly secured in the piston bosses by means of a screw, as shown i...
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This note was uploaded on 09/30/2012 for the course MECHANICAL 403 taught by Professor A.thirumoorthy during the Spring '11 term at Anna University Chennai - Regional Office, Coimbatore.
- Spring '11