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

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

Among the apparatus racks’ primary applications are machine equipment and transport devices so when the applications involve transmitting linear motions, they are generally weighed against ball screws. In those instances, the main advantages of gear racks could be named such as Metric Gear Rack having the ability to satisfy a heavier load through the use of bigger modules and having no length limitation by connecting equipment racks with finished ends. On the other hand, a good example of the disadvantages of equipment racks includes the occurrence of backlash.

When manufacturing equipment racks, due to their bar form, bending often results. In these cases, corrective procedures using presses tend to be employed.