Rack-and-pinion gear units to the spn standard

A rack-and-pinion gear unit transforms the rotational movement of a motor or a gear unit into linear motion. The pinion performs the rotational movement, and by meshing with the gear rack, the movement is transformed into a linear feed. This process also works inversely. A linear movement, of a piston for example, drives the gear rack, causing the pinion to rotate. 

In many cases an open drive without a housing is used. Here, it is necessary to ensure that forces that arise due to the gear teeth meshing are taken up by other components. The meshing of the gears guarantees direct drive without slippage even over long distances. Either the gear rack or the pinion can perform the feed movement.

These are the advantages of the rack-and-pinion gear units to the spn standard

• Drive over long distances
• Transformation of the movement from rotary to linear
• Adjustable to ensure low backlash
• No slippage