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Ten Causes Of Bearing Damage

Time:2020-03-24 09:30:15Hits:164
Ten Causes Of Bearing Damage Bearing in use may encounter peeling, burns, cracks and other problems, how to solve it? The common problems of bearing damage are mainly divided into the following categories: peeling burn; crack defect; cage breakage; scrat

Ten Causes Of Bearing Damage


Bearing in use may encounter peeling, burns, cracks and other problems, how to solve it? The common problems of bearing damage are mainly divided into the following categories: peeling burn; crack defect; cage breakage; scratch card injury; rust corrosion; abrasion; corrosion; indentation bruise.

Ten Causes Of Bearing Damage
Bearing in use may encounter peeling, burns, cracks and other problems, how to solve it? The common problems of bearing damage are mainly divided into the following categories: peeling burn; crack defect; cage breakage; scratch card injury; rust corrosion; abrasion; corrosion; indentation bruise.
Bearing in use may encounter peeling, burns, cracks and other problems, how to solve it? The common problems of bearing damage are mainly divided into the following categories: peeling burn; crack defect; cage breakage; scratch card injury; rust corrosion; abrasion; corrosion; indentation bruise.

Peel


►Phenomena:
Surface stripping
Obvious convex and concave after peeling
► Reasons:
Overload the ambassador
Poor installation
Poor accuracy of shaft or bearing box
Too small
[医] xenembole
Rusty
Degradation of hardness due to abnormal high temperatures
► Measures:
Reconsideration of use conditions
Re-select bearings
Reconsider clearance
Check machining accuracy of shaft and bearing box
Study on the design of bearings
Check the installation method
Inspection of lubricants and lubrication methods


Fire Burn


►Phenomena:
Bearing heat discoloration, and then burn can not rotate
► Reasons:
Too small clearance (including too small for deformed parts)
Inadequate lubrication or lubricants
Overload (overcompression)
Roller deflection
►Measures:
Set appropriate clearance (increase clearance)
Check lubricant type to ensure injection
Inspection of conditions of use
Preventing positioning errors
Check the design around the bearing (including heat bearing tolerance)
Improving bearing assembly methods


Crack Defects


►Phenomena:

Partial shortfall
And cracks
► Reasons:
Overload
Too much interference
Large peeling
rubbing crack
Poor precision on mounting side (too large corner)
Poor use (with a copper hammer, stuck in a large foreign body)
► Measures:
Inspection of conditions of use
Set appropriate interference and check material
Improving Installation and Usage
Preventing friction cracks (check lubricant)
Check design around bearings


Damaged Cage


► Phenomena:
Rivets loose or broken
Broken cage
► Reasons:
Excessive torque load
High speed rotation or frequent speed changes
Clip into foreign objects
Poor lubrication
Large vibration
Poor installation (installation in tilt)
Abnormal temperature rise (resin cage)
► measures:
Inspection of conditions of use
Check lubrication conditions
Reconsideration of cage options
Note the use of bearings
Study of shaft and bearing box rigidity

Scratch Wounds



► Phenomena:
Rough surface with tiny solution
Scratch between the rim of the ring and the end of the roller is called a scratch
► Reasons:
Poor lubrication
[医] xenembole
Roller deflection due to bearing tilt
Cut-off oil on the retaining surface due to high axial load
Rough surface
Rolling Large
► Measures:
Study on Lubricant and Lubricating Method
Inspection of conditions of use
Set appropriate preloading
Reinforced sealing performance
Normal use of bearings


Rusty Corrosion


► Phenomena:
Partial or total surface rust
Rusty with pitch of rolling body
►Reasons:
Poor custody
[法]improper packing
Lack of rust inhibitor
Invasion of water, acid, etc.
Hand bearings directly
► Measures:
Prevent rust in custody
Reinforced sealing performance
Check lubricating oil regularly
Note the use of bearings

Wear and Corrosion


► Phenomenon:
red rust-colored wear powder produced on the surface
► Reason:
the interference quantity is not enough
bearing rocking angle small
lubrication is insufficient (or is in the non-lubricating condition)
the unsteady load
transportation vibration
► Measures:
check the interference and lubricant coating state of transport
when the inner and outer rings are packed separately,when not separated, apply pre-pressure
re-select lubricant
re-select bearing


Wear and Tear


►Phenomenon:
surface wear, resulting in size changes, mostly accompanied by wear, wear marks
► Reasons: lubricant mixed into foreign body
lubrication poor
roller skew
► Measures:
Check Lubricants and Lubrication Methods
To Strengthen Sealing Performance
To Prevent Positioning Error R

Electrolytic Corrosion


► Phenomenon:
the rolling surface has a jet crater pit, further development is a wave plate-like
►Reasons:
rolling surface electrification
► Measures:
make current bypass valve to take insulation measures to avoid current through the bearing interior


Impressione


► Phenomena:
surface pits and mounting abrasions caused by entrapment of a solid foreign body or impact
► Reason:
the solid foreign body invades
the impact caused by
the bad installation of the clip strip, falls off in
the inclined state of installationhe ring and
► Measures:
improve installation and use
to prevent foreign objects from mixing.
If caused by metal sheet, check other partse end of the roller is called a scratch
Broken cage




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