Thrust ball bearing, 51144

Model Number: 51144(8144) Brand Name: NXZ Key Specifications/Special Features: Thrust roller bearings:Thrust roller bearings includes self-aligning thrust roller bearings, tapered roller thrust bearings, cylindrical roller thrust bearings and needle roller thrust bearingsStructures:1. 29,000 types thrust self-aligning roller bearings, this type of bearings can carry both axial and radial load in which mainly is axial load and it has low friction coefficient and fine self-aligning propertyRoller of this bearing is unsymmetrical spherical roller, which can reduce relatively slip between roller and raceway in the operatingAlso the long roller has big diameter and much quantity, so the load capacity is highGenerally it adopts oil lubrication, but under low speed circs will be grease lubrication
NXZ mainly produce the following structures:
2.80000 type thrust cylindrical roller bearings and 90,000 types thrust tapered roller bearings, this type can accommodate single-direction axial load, they have much higher axial carrying-capacity than thrust ball bearings, in additional, they have high rigidity and take up smaller space
Thrust cylindrical roller bearings are applied in operation with low rotation speed the rotation speed of thrust tapered roller bearings is little higher than thrust cylindrical roller bearings
3. 350,000 types double-directions thrust tapered roller bearings (SKF code), this type can accommodate larger double-direction axial load
4. TTSV and TTSX type thrust full tapered roller bearings used on pressing-down device of mill, this type is full complement roller, can accommodate larger single-direction axial load
Cage materials: brass, bronze or steel solid cages are adopted
Permissible tilt angle
Bearing axis of thrust tapered roller bearings and thrust cylindrical roller bearings are not permitted to be inclined
Bearing axis of thrust self-aligning roller bearing is permitted to be inclined, when the equivalent static load P_0a ≤0.05C_0a and when the shaft washer is slewing, permissible tilt angle is:
Bearing series Permissible tilt angle
292 series 1.5°
293 series 2°
294 series 2.5°
Permissible tilt angle will decrease with the increase of the load
Minimum axial load:
When the bearings are slewing, as the rolling bodies are acted by centrifugal moment, the rolling bodies will slid with reference to the raceway, which will cause the shaft washer and housing washer to be separated
In order to ensure the normal operation of the bearings, certain axial load must be put on the bearing
Minimum axial load required is:
Thrust tapered roller bearings and thrust cylindrical roller bearings