Bearing Pp t

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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7/16B.T. RaghuBearings7

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



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



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



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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15/16B.T. RaghuBearings

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FAILURE OF BEARINGSLUBRICATION

MISALIGNMENT

LOAD

SPEED

FORIEGN MATERIAL

TEMPERATURE

SELECTION OF BEARING

LIFE

BEARINGS


16/16B T RaghuBearings

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CHECKING OF BEARINGSLUBRICATION

TEMPARATURE OF BEARING

ABNORMAL SOUND

VIBRATION

SMOKE / BREAK DOWN

BEARINGS

Bearing Pp t

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