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Premature bearing failure of three reasons (and how to avoid)

Update:11-01-2020
Summary:

Each bearing failure will tell a story - that can help […]

Each bearing failure will tell a story - that can help identify mechanical problems, maintenance issues, bearing the wrong choice and stories of other important issues. Are you interested?
In the pulp and paper industry, bearing face every day harsh conditions, which may lead to premature bearing failure. When a bearing fails, the quick change to minimize down time is a priority. In fact, take the time to investigate the cause of bearing failure can actually increase uptime and reduce maintenance time and costs.
Creep
Creep occurs slidable place fitting surface to create a gap in the assembly surface.
Find what: bearing surface shiny, occasionally scratches or wear and tear.
the reason:
Lack of interference or loose fit
Inadequate fastening sleeve
solution:
Check interfering with, preventing rotation.
Correction tautness sleeve.
Accuracy of the shaft and housing
. Axial preload.
Tighten the side raceway ring.
The mounting surface
Coated with adhesive. The mounting surface coated with a lubricant.
Peel off
When the small bearing material due to rolling fatigue peeled off from the smooth surface of the rolling element or raceway, peeling occurs, thereby forming a coarse-grained regions.
What to look for: bearing surface rough, rough texture.
the reason:
Overload
Improper installation (alignment)
Instantaneous load
Into the debris, water seepage
Poor lubrication, improper lubricant
Bearing clearance
Unsuitable or precision shaft bearing seat is incorrect, uneven stiffness of the bearing housing, shaft bending large
By the rust, corrosion pits, stains, dents caused (Brookfield Processing)
solution:
Reconfirm and check the bearing application loading conditions
Improved installation methods
When rust improve the sealing mechanism to prevent idling
Selection of appropriate viscosity lubricant to improve lubrication method
Check shaft and
Check the accuracy of the bearing internal clearance of the bearing seat
Smear
Because the applicator surface film rupture and / or a small amount of sliding between the bearing member due to damage caused nip.
What to look for: With the melting of the surface roughness can occur.
the reason:
High-speed, light-load
Sudden acceleration and deceleration
Incorrect lubricant
Water
solution:
Improve preload
Improve the bearing clearance
Having good film forming ability
Lubricant to improve lubrication method (download our Lubrication Guide for easy reference)
To improve the sealing mechanism
Bearing failure will not only affect a particular device, it will cause the entire device to stop running. Not only to solve the immediate problem by installing new bearings; investigate the cause of bearing failure. By identifying and resolving problems bearing selection, installation, lubrication and applications, you may be able to extend bearing life, increase productivity and reduce maintenance costs.

 

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