GPK is a gear calculation package which provides designers with standard base models that they can then use to calculate their own drives. Since GPK enables designers to access all the functions in the KISSsoft installation, it is ideally suited for use with standard kinematics, such as industrial gearboxes.


The KISSsys calculation module has an extension called KISSsysWeb which supports sales departments when they evaluate gearboxes according to customer-specific conditions. Using KISSsysWeb, sales persons can access gearbox models when they are at the customer’s site. Customer-specific operating data can be input directly in its simplified web interface, to verify every aspect of gearboxes. Existing gearboxes can be analyzed more quickly and appropriate gearboxes are selected more efficiently.

Gearbox Variant Generator

The KISSsys gearbox variant generator not only sizes gearboxes automatically but also varies the number of gear stages and gear dimensions, while taking the bearing design into account. Simply enter the required overall transmission ratio: the generator then calculates all possible gearboxes which have the predefined load and required safeties. The gearbox variants can then be evaluated according to a multitude of criteria such as total weight, cost or available installation space.

KISSsys Efficiency Calculation

Calculating the efficiency in KISSsys enables the power loss and thermal rating to be evaluated for the entire drive train. The calculation is performed according to ISO/TR 14179, which provides a good basis for calculating power loss and heat dissipation. The many extra features in KISSsys, such as functions for precisely calculating power loss (for rolling bearings, bevel gears etc), or for defining your own correction factors, predefining torque over time, and a multitude of different evaluation types, round off the calculations available in KISSsys, which reflect real life applications.

KISSsys Modal Analysis

With KISSsys, you can analyze drive train eigenfrequencies. This function evaluates the drive train with coupled vibrations, in which the eigenmodes are transmitted via the meshing or the connecting rolling bearings within the shaft system. Torsional, bending and axial vibrations can also be taken into account if required. The eigenfrequencies are then output as the result. A 3D animation clearly shows which eigenmode is dominant, and from which component it originates.

KISSsys Housing Deformation

When a housing deforms under load, it also displaces the bearings and shafts. In housing designs that are particularly at risk of this effect, it can also affect meshing alignment. With the reduced stiffness matrix, KISSsys can determine housing deformations on the basis of the current bearing forces. The gear contact analysis function can then be used to check and optimize the load distribution while taking the housing displacement into account.

KISSsys Reliability

The KISSsys reliability calculation is an effective way of evaluating every aspect of the drive train for all gears, shafts and rolling bearings. It is a convenient method for comparing different drive unit designs with each other. Weibull shape parameters and the failure free time coefficient ccan be configured for the reliability calculation.


Our tutorials offer step-by-step instructions for specific calculation tasks. We recommend these documents for a good introduction in the application of KISSsys.

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