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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Discussing the importance of preloading NSK bearings Discuss the importance of preloading NSK bearings
What is the primary pre-tightening?å•¥ is called NSK bearing pre-tightening. Let's explain it; we all know that it is based on different applications; NSK bearing equipment must have positive or negative working clearance. In most cases; working clearance should be positive Value; that is, when the bearing is running; there must be a residual clearance; although it may be a small clearance. There are many applications where there is a negative working clearance, that is, preloading. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
So what is the pre-tightening effect?
The pre-tightening of NSK bearings is firstly to improve the rigidity or rotation accuracy of the bearing equipment; secondly, the pre-tightening can reduce the noise; improve the precision of the shaft guidance; compensate the wear and tear in the running extension life, such as the spindle bearing of the machine tool, the axle of the automobile Pinion bearings, bearings for small motors, or bearing equipment for reciprocating motion. In some applications; if the bearing does not have or accepts only a small load; and operates at high speed; preloading should be performed on the bearing equipment; For example, after a spring, etc. In this case; the effect of the pre-tightening is to supply a minimum load to the bearing; to avoid the rolling of the rolling body to form a bearing damage.
How to pre-tighten NSK bearings in Japan?
Preloading is based on different bearing types; can be radial; can also be axial. For example; cylindrical roller bearings; because of the origin of the depiction; can only be applied in the radial direction; and thrust ball bearings and cylindrical rollers Thrust bearings can only be preloaded in the axial direction. Single row angular contact ball bearings and tapered roller bearings are generally axially preloaded; and generally used in the same type of bearing as back-to-back or face-to-face The deep groove ball bearings are generally also subjected to the same axial preload; in order to reach the pretensioning intention; the radial internal clearance with a larger than normal group should be used; so that the angular contact ball bearing has a greater than zero Touch angle.
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Discuss the importance of preloading NSK bearings
Source: China Bearing Network Time: 2018-07-19