BEARINGS Master Copy for IRTMTCALD by IRICEN BEARINGS
BEARINGS Master Copy for IRTMTC/ALD by IRICEN
BEARINGS Function Bearings are required while transmitting rotary power from the source to the points of its usages through various linkages to reduce friction, undue power losses, to give even support to the rotating unit and to avoid setting up of undue vibrations in the rotating member thus increasing life of the unit, by reducing wear.
TYPES OF BEARINGS • Bush bearings. • Ball bearings. • Roller bearings • Needle roller bearings. • Thrust bearings. • Spherical bearings • Tapper roller bearings.
USE OF BEARINGS On track machines use of various types of bearings on their working units like tamping units, lifting units, scrapping chains, ballast regulating units etc. is made e. g. besides this bearings are used in the following assemblies. • Wheels and axles. • Gear boxes. • Axle gear bogies. • Various bogies. • Pumps & Motors. • Radiator fans. • Engines, etc.
SELECTION OF BEARING Many factors have to be considered like • 1. Loads (Radial and axial) • 2. RPM • 3. Vibration • 4. Shocks • 5. Reversal of directions. • 6. Atmospheric conditions (Clean dusty) full of chemicals. • 7. Space to fit bearings. • 8. Precision required in running. • 9. Lubricating conditions • 10. Quite running. • 11. Temperatures while running. • 12. Ease of mounting and dismounting • 13. Clearance required in a bearing.
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