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NSAR, a professionalUCF 211 supplierin China, provides a broad variety ofcast iron pillow block ball bearingswith best customer service and quality assured.
With more than 10 yearsUCF 211 pillow block ball bearingmanufacture experience, ourUCF 211has been exported to Europe, Portugal, Spain, South America, Oceania, South Africa and other countries and regions.NSAR can satisfy your bulk UCF 211 pillow block ball bearings customization needs.

Main Faults found during periodic inspection and their causes

Faults and Causes

Excessive torque

(1) Degraded grease
(2) Interference of seal with
slinger due to excessive supply of grease
(3) Deformation of slinger causing interference with seal
(4) High load due to shaft expansion.

Abnormal noise,abnormal vibration

(1)Improper tightening of set screws or of mounting bolts
(2)Wear on inner ring of bearing or shaft due to creep or fretting
(3)Ingress of foreign matter dirt into bearing
(4)Damage to cage or ball rolling surfaces due to rolling fatigue
(5)Dent on raceway surface or ball rolling surface becarse of excessive load
(6)Warped or bent shaft.

Abnormal temperature increase

(1)Degraded grease
(2)Interference of seal with slinger due to excessive
supply of grease
(3)Deformation of slinger carsing interference with seal
(4)Looseness of setscrew,eccentric locking ring or adapter lock nut for tapered i.d.bearings
(5)Load due to shaft expansion
(6)Damage to cage or ball rolling surfaces due to rolling fatigue.