Single Direction Thrust Ball Bearings with Flat Back Face
Single Direction Thrust Ball Bearings with Flat Back Face Thrust Ball Bearings Selangor, Klang, Malaysia Supplier, Dealer, Wholesaler  | ZRD Bearing Trading (M) Sdn Bhd
The single direction thrust ball bearings can only be used to carry axial load in one direction. Single direction thrust ball bearings have planar housing washer and an aligning seat washer. Generally, planar housing washer will not allow any angular error, however, when designing bracing structures, a gap of 0.5-1mm between the outer diameter of housing washer and the fitting surface of bearing block can be kept to correct the angular errors, which, would be made when mounting. Please note aligning housing washer needs to be ordered additionally.

Minimum Load-Thrust Ball Bearings
In order to keep bearings working in a good condition, a minimum load must be imposed on bearings, particularly on bearings working at high speeds, high accelerations, or with the load direction changing frequently, because under these working conditions, inertial force of balls and cage and lubricant friction will have bad influence on the rotation of bearings, and detrimental sliding movement may be caused.
The minimum load of a thrust ball bearing can be obtained from

A M inimum load constant, see bearing dimension tables
N speed, r/min
When bearings are started at low ambient temperatures or in the condition where the viscosity of lubricant is very high, a larger minimum load is required. Usually, the weight of the bearing supporting parts plus the load on the bearing have been over the minimum load. If the weight cannot be up to the minimum load, then extra radial load must be exerted on this type of bearing in order to meet the requirement of minimum load. The requirement can be met through preloading in axial with springs.

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