INA calculation program 
The calculation on pages link to link is used for the preliminary selection of monorail guidance systems. They allow an approximate calculation of the equivalent static and dynamic bearing loads. 
BEARINX^{®} for precise design 
In
order to achieve precise design of linear guidance elements in relation to
basic rating life ╳ 
For
this reason, INA developed the rolling bearing ╳ 
Figure 1 
The
linear module of BEARINX^{®} can be used to calculate linear guidance
elements in multiaxis systems (e.g. machine tools) under any load
combination down to the level of the rolling element ╳ 
Taking account of elasticities in the system 
This
sophisticated calculation model takes account of all the elasticities
in the system, ranging from the rigidity ╳ 
In
order to determine even more precisely the pressure between the rolling elements
and raceway in linear recirculating roller bearing ╳ 
This
model gives significantly more precise results than calculation programs
that only take account of elasticity ╳ 
BEARINX^{®} allows
the calculation of systems with any number of: travel axes, linear
guidance elements and linear drives, load ╳ 
The
results provided by BEARINX^{®} include the static load ╳ 
Calculation using BEARINX^{®} is available as a service. 
The
linear calculation program ╳ 
Figure 2 
Calculation program – 
The
input data for the calculation program ╳ 
The relevant factors for calculation, apart from the linear guidance elements and the drive system for the table, are those components that induce loads on the linear guidance elements (the inherent mass of the components or their inertia forces), 
Figure 3 Headstock Base plate Linear guidance elements Drive 

The table coordinate system is a Cartesian, right hand coordinate system. 
The directions in the table coordinate system are defined as follows, 

The
(translational) position of the table coordinate system is freely selectable.
It is recommended that this should be located centrally between
the carriages for 
Figure 4 

The translational position of the linear guidance elements is stated in relation to the table coordinate system. In order to determine the torsion angle of the linear guidance elements, their coordinate system is rotated about the X axis into the table coordinate system, 
Figure 5 

The translational position of the drives (support function in the traverse direction) is stated in relation to the table coordinate system as Y and Z coordinates, 
Figure 6 

The mass of the components is concentrated at a mass point at its centre. 
The translational position of the centres is again stated in relation to the table coordinate system, 
Figure 7 Mass of headstock Mass of base plate 

External loads such as machining forces on the linear table, are stated in relation to the table coordinate system. 
The following must be stated, 

Figure 8 
In order to depict the working cycle of the machine, a duty cycle must be described. This is composed of the motion parameters of the machine and their loading ╳ 
On the basis of a speed/time diagram, the working cycle should be subdivided logically into individual load ╳ 
With the aid of the basic motion formulae for uniform motion 
Figure 9 
Example of the travel 
The following simplified example describes the travel of a linear table. 
The 
Complex
travel cases can in certain circumstances be usefully reduced by
combination. Please consult the 
In
t_{1} 
In
t_{2} 

At v_{3} 
Position: 

Value: 

In
t_{4} 
In t_{5} 
At v_{6} 
In t_{7} 
For t_{8} 