NSK bearing life cycle extension method

    In order to make NSK bearing life longer, we will share with you the NSK bearing life cycle extension method, I hope to help everyone.
      1, NSK bearing installation
      (For the installation method of imported bearings, please refer to the article "How to install NSK imported bearings".)

      Whether the NSK bearing is installed correctly affects accuracy, life and performance. Therefore, the design and assembly department should fully study the installation of the bearing. I hope to install according to the operating standards. The items of the job standard are usually as follows:

      (1) cleaning the bearing and bearing related components;
      (2) Check the size and finishing of the connected components;
      (3) installation;
      (4) Inspection after installing the bearing;
      (5) Supply lubricant.

      2, alignment, straightening

      After the bearings have been installed, alignment may result in additional loads, friction and vibration of the bearings if not carefully aligned. These can accelerate fatigue and reduce bearing life and can damage the life of other machine parts. In addition, increased vibration and friction can greatly increase energy consumption and risk of premature failure.

      3. Basic condition monitoring

      During use, the basic external conditions of the bearing operation are often monitored, such as temperature, vibration and noise measurements. These regular inspections will identify potential problems early and will prevent unexpected machine stops, enabling production plans, increased plant productivity and efficiency.

      4, relubrication

      During operation, NSK bearings require proper relubrication to perfect its performance. The method of bearing lubrication is divided into grease lubrication and oil lubrication. In order to make the bearing function well, first, choose a lubrication method that suits the conditions of use and the purpose of use. Lubricity of oil lubrication predominates if only lubrication is considered. However, grease lubrication has the advantage of simplifying the structure around the bearing.

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What aspects should be considered in the selection of rolling bearings?

There are many types of rolling bearings and a wide range of sizes. In order to select the most suitable bearing for the design purpose, it is necessary to integrate the mechanical conditions, the performance requirements of the bearing, the specifications of the bearing, and the market and economy. analysis.

Since the bearing diameter is generally determined first, then the bearing is selected first, and the bearing type is preliminarily determined based on the bearing inner diameter and considering the bearing installation space and configuration mode. Secondly, the analysis and comparison of the "mechanical required bearing life" and "press Bearing life calculated by bearing load "determines the size of the bearing; finally, it is necessary to determine the internal structure of the bearing such as accuracy level, internal clearance, cage, lubricant, etc.

The general steps for selection are:

1. Determination of bearing type and configuration. (Reference factors are: bearing installation space; bearing load size, direction and nature; speed; rotation accuracy; noise and friction torque; rigidity; relative inclination of inner and outer rings; installation and disassembly; bearing configuration; Sex and economy).

2. Determination of bearing size. (mechanical required bearing life; equivalent dynamic load; equivalent static load; speed; main bearing size; basic dynamic load rating; basic static load rating; allowable axial load).

3. Determination of the accuracy level. (rotation accuracy; noise and friction torque; speed; bearing accuracy).

4, with the internal clearance. (The size and nature of the load; the temperature at the time of operation; the material, size and precision of the shaft and the outer casing; the fit; the temperature difference between the inner and outer rings; the rotational speed; the preload; the bearing accuracy; the internal clearance of the bearing).

5, cage material and type. (speed; noise).

6. Special environment response measures. (Medium conditions, such as temperature, seawater, vacuum, pharmaceuticals, dust, gas, magnetic fields, etc.; special materials; special heat treatment; special surface treatment; lubricants).

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