A rack and pinion mechanism is utilized to transform rotary motion into linear motion and vice versa. A round spur equipment, the pinion, meshes with a spur equipment which has teeth occur a straight range, the rack. Rack and pinion gears are used to convert rotation into linear motion. A perfect example of this is actually the steering program on many vehicles. The tyre rotates a 
equipment which engages the rack. As the apparatus turns, it slides the rack either to the proper or left, based on which way you change the wheel.
A rack and pinion program gives the ability to transfer rotary to linear motion, with all the precision expected of a geared program.
The racks are produced from ground, hardened stainless or ground stainless and available with a choice of accuracies, pitches, and lengths, in addition to the facility to provide modifications such as for example flats, journals or custom ends. Hobbed stainless steel and brass racks are also obtainable. The rack pinions are ordinary or anti-backlash, also with a selection of accuracies, pitches, bore sizes, alternative components and coatings.
Floor rack can be used for both measurement and actuation. Generally small pitches (1 mm) fit measurement as the smaller pinion diameter provides higher linear resolutions. The bigger pitches (2 mm and 2.5 mm) enable an increased load capacity. For most applications the rack can be used for both the Spur Gear Rack feedback and the actuation; however in very exact applications it is best to us a non-drive section of the rack for opinions, alternatively a separate rack may be used. Hobbed rack are more suitable for light actuation applications where price is a key consideration.
You can expect three types of rack – rectangular, solid circular and tubular rack. Rectangular rack are utilized when the application needs the rack to become stationary and the rack pinion supplies the element of motion. Our rectangular racks are used with a engine, slide and carriage for example in the printing industry for the actuation of paper trimming knives in a printing press. Circular rack certainly are a more versatile alternative, in regards to to mounting, used for example in XY stages. The tubular racks enable the passage of liquids, fibre-optics, gasses etc, producing them well suited for medical and scientific applications, such as for example laboratory automation choose and place mechanisms.
Round racks are well suited for linear actuators in accurate automation applications . Tubular racks are specially useful for medical and scientific applications, where the hollow shaft permits the passage of fluids, fibre optics and gases.