We are a professional manufacturer for
steel pipe machine and coil processing machine, relying on the scientific
research platform in Germany, the enterprises integrates scientific and
technological development, product design, production and manufacturing.
Spiral Pipe Machine,Erw Tube Machine,Slitting Machine,Cut To Length Machine,Rolling Machine Taiyaun JDS Machinery And Equipment Co., Ltd. , https://www.jdsmachine.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>The problem of thinking about the combination of rolling bearings The problem of thinking about the combination of rolling bearings
The combination of the rolling bearing depicting the bearing of the bearing determines the type and type of the bearing in the future; it must also correctly carry out the combined layout of the rolling bearing; the ability to ensure the normal operation of the bearing. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
The combined layout of the bearing depicts:
1) Shaft support end layout,
2) cooperation between bearings and associated parts,
3) The smoothness and sealing of the bearing,
4) Improve the stiffness of the bearing system.
1. Fixed at both ends (two-way fixed at both ends)
The short axis at normal working temperature (span L<400mm); the fulcrum often uses two-way one-way fixing method; each bearing does not receive axial force in one direction. As shown in the figure, there is a small amount of thermal expansion when the shaft is operated; bearing device Should have an axial gap of 0. 25mm-0. 4mm (the gap is very. å³ å³ æ§é¼—觯 æ§é¼—觯 æ§é¼—觯 æ§é¼—觯 æ§é¼—觯 嫫虻髡è»ã•é¹˜ 嫫虻髡è»ã•é¹˜ S S S S S S S 嫫虻髡è»ã•é¹˜ 嫫虻髡è»ã•é¹˜.
Features: Two-way movement of the constrained shaft. Suitable for shafts where the operating temperature does not change much.
Pay attention to: think about the elongation of heat; leave the gap between the bearing cap and the outer end face c; c = 0. 2 ~ 0. 3mm.
2. One end is fixed in two directions, one end swims when the shaft is long or the working temperature is high; the thermal expansion of the shaft is shortened; the fulcrum layout with one end fixed at one end and one end swimming should be selected;
The fixed end receives two-way axial force from a single bearing or bearing set; while the floating end ensures free movement when the shaft is elastic. To prevent loosening; the inner ring of the swimming bearing should be axially fixed with the shaft (usually using elastic block) Circle). When the cylindrical roller bearing is used as the fulcrum of the swimming; the outer ring of the bearing should be axially fixed with the base; the movement between the roller and the ferrule is used to ensure the self-elasticity of the shaft.
Features: one fulcrum is fixed in both directions; the other fulcrum is used for axial movement.
Deep groove ball bearing as the fulcrum of the swimming; the outer ring of the bearing and the end cover leave a gap.
Cylindrical roller bearing as a fulcrum; the outer ring of the bearing should be fixed in both directions.
Applicable: long axis with large temperature change.
2 Adjustment of the bearing combination 1. Adjustment and adjustment method of bearing clearance: (1) Adjusting the thickness of the bearing cover and the base of the machine base,
.2) Adjust the movement of the bearing outer ring gland with screws.
2. Bearing pre-tightening intention: improve accuracy, stiffness; reduce oscillation.
According to the pre-tightening force requirement of the bearing, the bearing must adhere to a certain axial force; then ensure a certain clearance;
3. The adjustment of the bearing assembly orientation allows the on-axis parts (gears, pulleys, etc.) to have a precise working orientation.
3. The cooperative bearing inner ring hole of the rolling bearing and the shaft cooperate with the base hole system.
The cooperation between the bearing outer ring and the bearing housing hole is based on the base shaft system.
4. Rolling bearing assembly and disassembly l Rolling bearing general drawing life is inconsistent with the whole machine; the demand is replaced frequently in the application process; when the bearing with the bearing connection is damaged, the bearing needs to be disassembled; The disassembly force should not be transmitted through the rolling body; in order to prevent plastic deformation of the rolling body.
Demolition of the rolling bearing generally uses special things; the drawing of the shafting layout should leave room for the use of things; these data can be found in the rolling bearing manual.
Recommend to friends comments close window Bearing related knowledge Bicycle bearing, drive parts, sludge removal method
NTN cylindrical hole bearing device on the press method Common quality defects of the bearing parts after heat treatment analysis According to the scale of the rolling bearing classification of the rolling bearing heating device specific analysis
This article links to http://
Please indicate the bearing network http://
Previous:Analysis and Disposal of Oscillation Causes of Turbine with Transmission:Next: Oscillation between NTN Bearings and Normal Differences
Source: China Bearing Network Time: 2014-02-01