Racks are portions of a cylindrical disk with an infinite radius which has involute shaped tooth cut into its encounter. Racks mate solely with spur gears which have the same module, pressure angle and preferably face width. KHK offers gear racks in many components, configurations, modules and lengths. One exclusive feature of our racks is definitely that most are supplied with finished ends. This type of production allows for multiple racks to be butted, end-to-end, to produce one continuous amount of rack. Most of the products that we offer allow for secondary functions such as for example Metric Gear Rack reduction of the length, the adding of tapped holes, or the application of heat treatment. Our offering also contains products which have already had a few of these secondary operations completed.
The straight tooth cylindrical gear that the radius of the pitch cylinder is infinite and in a bar form is called a gear rack. If it is sorted by the positions of the apparatus shafts, it belongs to the parallel shaft category. The spur gear that meshes with a equipment rack is normally called a pinion.

Besides gear racks with straight line the teeth, there are helical racks which have slanted tooth. Helical equipment racks are paired with helical gears, but because of the slant of the tooth direction, as in helical gears, the mesh creates axial thrust forces.

Among the gear racks’ main applications are machine tools and transport devices so when the applications involve transmitting linear motions, they are often weighed against ball screws. In those instances, the main benefits of gear racks can be named this kind of as being able to satisfy a heavier load by using bigger modules and having no size limitation by connecting gear racks with finished ends. On the other hand, an example of the disadvantages of equipment racks contains the occurrence of backlash.

When manufacturing equipment racks, due to their bar shape, bending often results. In such cases, corrective processes using presses are often employed.