Racks are portions of a cylindrical disk with an infinite 
radius which includes involute shaped teeth cut into its face. Racks mate specifically 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 that most are supplied with finished ends. This type of production permits multiple racks to end up being butted, end-to-end, to create one continuous length of rack. Most of the products that people offer allow for secondary functions such as for example reduction of the space, the adding of tapped holes, or the application of heat treatment. Our offering also includes products which have already had some 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 named a gear rack. If it’s sorted by the positions of the apparatus shafts, it is one of the parallel shaft category. The spur equipment that meshes with a gear rack is normally called a pinion.
Besides gear racks with straight series tooth, there are helical racks that have slanted the teeth. Helical equipment racks are Metric Gear Rack paired with helical gears, but because of the slant of the tooth direction, as in helical gears, the mesh generates axial thrust forces.
Among the gear racks’ primary applications are machine equipment and transport devices and when the applications involve transmitting linear motions, they are generally weighed against ball screws. In those cases, the main advantages of gear racks could be named this kind of as having the ability to fulfill a heavier load through the use of larger modules and having no size limitation by connecting equipment racks with completed ends. However, a good example of the disadvantages of equipment racks includes the occurrence of backlash.
When manufacturing gear racks, because of their bar shape, bending often outcomes. In these cases, corrective processes using presses are often employed.