KISSsoft Tutorial-Roller Bearings

1 Task

1.1 General

In the KISSsoft system, roller bearings are usually analyzed as part of the shaft analysis process. The calculation of roller bearings that is also available in the KISSsoft software is not discussed here. In this case, roller bearings are not viewed separately from their environment.

Instead, they are treated as part of a system that consists of a shaft, external load and bearing.

The great advantage of this approach is that the calculation of loads placed on the roller bearing is performed automatically and therefore is less prone to user errors. The same applies to statically over-determined systems. You can also analyze individual bearings that are subject to a known load. For more information about this, see section 2.4.

1.2 Task

The multiple bearings shown in the example in Figure 1.1 are to be analyzed. The system is statically over-determined: The first bearing is positioned within the shaft and the third bearing

is an axial bearing supported on its right-hand side. The other bearings are not subject to axial

forces.

Figure 1.1 Example bearings for this tutorial

1.3 Modeling the system

First of all, model the shaft geometry as shown in Figure 1.1 (see also Tutorial 006: Shaft Editor). In a second step, define the two force elements (bevel gear and cylindrical gear) with the data shown in Table 1.2.

Figure 1.2 Defining the force elements

After this, the following system should be available in the graphical Shaft editor:

Figure 1.3 Geometry of the shaft and force elements

1.4 Adding bearings

In the "Elements-tree", right-hand mouse click on "Bearing" and then select the "Roller bearing" option from the context menu:

Figure 1.4 "Elements-tree" with the context menu for the "Bearing" group

As shown in Figure 1.4, the "Elements-editor" lists the most important bearing parameters. To

position the bearing at y=10 mm within the shaft, click the radio buttonto the right of the "External diameter" input field. From the drop-down list with the same name, select the entry 52.00 mm and select "Type Koyo 6205 (d=25 mm, D=52 mm, B=15 mm)" from the drop-down list for the label. Then click the Sizing button to the right of the drop-down lists for the Inner diameter or External diameter to modify the relevant diameter to the shaft's geometry at the specified position.

Figure 1.5 "Elements-editor" with roller bearing parameters

If this bearing is not present in the list, check that bearings produced by Koyo have been included in the list of available bearings. To do this:

1. In the menu bar, click "Calculation".

2. There, select "Settings". This opens the "Module specific settings" window.

3. In the "Bearing manufacturers" group you can now select the companies you want to include in the list of available bearing manufacturers. If necessary, activate "Koyo" by clicking the checkbox of the same name.

4. Click OK to close the window.

The system comprising shaft, loads and bearings should now look like the one shown in Figure 1.1.

1.5 Roller bearing calculation

Start the shaft calculation by clicking onin the tool bar or else press F5 to run the roller bearing calculation. You can see a quick overview of the results in the "Results" window (see Figure 1.6). Please note that you must enter the bearing names manually.

Figure 1.6 "Results" window with a quick overview of the roller bearing analysis

http://www.cadfamily.com/html/Article/KISSsoft%20Tutorial-Roller%20Bearings_1049_1.htm

http://www.cadfamily.com/html/Article/KISSsoft%20Tutorial-Roller%20Bearings_1049_2.htm