bearing pp t
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8/13/2019 Bearing Pp t
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B.T. RaghuBearings1
SELECTION CARE ANDMAINTENANCE OFBEARINGS
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B.T. RaghuBearings2
TYPES OF BEARINGSDeep Groove Ball Bearings
Self-aligning ball bearings
Angular contact ball bearings
Cylindrical roller bearing
Needle roller bearingsSpherical roller bearings
Taper roller bearings
Trust ball bearings
Cylindrical roller thrust bearings
Spherical roller thrust bearings
Y- bearings
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B.T. RaghuBearings3
BEARINGSDeep Groove Ball Bearings
They have a deep grooves in each ring.
High Radial and Axial load carryingcapacity.
Suitable for combined load
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B.T. RaghuBearings4
Self Aligning Ball Bearing :They have two rows of balls running in its own grooves in theinner ring and sharing a common sphered track in the outer ring.
The inner ring and ball set align themselves freely around thebearing axis.
They are easy to examine.
Carry radial load
Withstand only very little axial load.
Used where possibility of misalignment between two bearingsEx: plummer block.
BEARINGS
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B.T. RaghuBearings5
Angular contact ball bearingsBalls forms an angle with the radial plane of the bearings
(Angle of contact is 400)
Able to carry combined axial and radial loads.
Used for higher speed.
BEARINGS
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Needle roller bearing
They are roller bearings with cylindrical rollers whichare thin and long in relation to their diameter.
High load carrying capacity
Suitable where radial space is limited
BEARINGS
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Spherical Roller BearingsThey are manufactured in a number of designs.
One feature is common to al is that bearings outer ring has asphered track making them self aligning.
High radial load carrying capacity. They are easy to inspect.
BEARINGS
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Taper Roller BearingsThey have taper rollers fixed to the inner race with cage.
Inner race is called cone and outer race is called cup.
Carry heavy radial and axial load in one direction.
Taper roller bearings are fitted at opposite angles to take up axialload in both directions.
These bearings cannot take misalignment.
BEARINGS
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Thrust Ball BearingsThis bearing is used to receive the longitudinal thrust orpressure of a shaft.
It absorbs pressure through the collers made on the shaft.
Its main advantage is that the shaft rotates at a fixed point.
BEARINGS
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Cylindrical roller thrust bearing
Suitable for heavy axial loads and insensitive to shock
They are single direction bearings
Takes less radial loads
BEARINGS
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Y- Bearing Units
SINGLE ROW DEEP GROOVE BALL BEARINGSSEALED AT BOTH END & HAVING SPHERED
OUT SIDE CURVED SURFACE AND HOLDED BYCI /FORGED HOUSINGS
THIS BEARINGS ACCOMMODATE MODARATE INITIALERROR OF ALIGNMENT.
DO NOT PERMIT AXIAL DIS PLACEMENT
BEARINGS
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FAILURE OF BEARINGSLUBRICATION
MISALIGNMENT
LOAD
SPEED
FORIEGN MATERIAL
TEMPERATURE
SELECTION OF BEARING
LIFE
BEARINGS
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8/13/2019 Bearing Pp t
16/16B T RaghuBearings
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CHECKING OF BEARINGSLUBRICATION
TEMPARATURE OF BEARING
ABNORMAL SOUND
VIBRATION
SMOKE / BREAK DOWN
BEARINGS
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