A rack and pinion system is utilized to transform rotary Spur Gear Rack motion into linear movement and vice versa. A circular spur gear, the pinion, meshes with a spur equipment which has teeth occur a straight collection, the rack. Rack and pinion gears are used to convert rotation into linear motion. An ideal example of this is the steering program on many cars. The steering wheel rotates a gear which engages the rack. As the gear turns, it slides the rack either to the right or left, depending on which way you switch the wheel.
A rack and pinion system gives the ability to transfer rotary to linear motion, with all the precision expected of a geared program.
The racks are manufactured from ground, hardened stainless steel or ground stainless steel and available with a choice of accuracies, pitches, and lengths, plus the facility to supply modifications such as 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 materials and coatings.
Ground rack can be utilized for both measurement and actuation. In general small pitches (1 mm) match measurement as small pinion diameter gives higher linear resolutions. The bigger pitches (2 mm and 2.5 mm) enable an increased load capacity. For most applications the rack can be utilized for both the feedback and the actuation; yet, in very precise applications it is best to us a non-drive section of the rack for feedback, alternatively another rack may be used. Hobbed rack are more suited to light actuation applications where cost is a key consideration.
We offer three types of rack – rectangular, solid round and tubular rack. Rectangular rack are used when the application requires the rack to end up being stationary and the rack pinion provides the element of movement. Our rectangular racks are used in combination with a engine, slide and carriage for example in the printing sector for the actuation of paper slicing knives in a printing press. Round rack certainly are a more versatile alternative, with regard to mounting, used for example in XY levels. The tubular racks allow for the passage of liquids, fibre-optics, gasses etc, making them perfect for medical and scientific applications, such as laboratory automation pick and place mechanisms.
Round racks are ideal for linear actuators in accurate automation applications . Tubular racks are especially useful for medical and scientific applications, where in fact the hollow shaft allows for the passage of fluids, fibre optics and gases.