ozubení

Ozubené is a Czech adjective meaning “toothed” or “gear-related.” It is used in technical language to describe components that have gear teeth, such as ozubené kolo (gear wheel), ozubené soukolí (gear train), or ozubený řemen (toothed belt). The form is typically part of compound nouns rather than a stand-alone noun. Etymologically, it derives from zub meaning “tooth” with the adjectival suffix -ený.

In mechanical engineering, ozubené parts are used to transmit torque and motion between shafts. The most common example is the ozubené kolo, which can have straight or helical teeth. The tooth profile is often involutní (involute), which enables a constant velocity ratio and smooth operation under load. The term also covers other toothed components, such as ozubené řemeny in belt drives and rack-and-pinion assemblies.

Manufacture and standards: Teeth are produced by hobbing, milling, shaping, or grinding, and finished to tight tolerances. Gear quality and geometry are governed by standards such as ISO 1328 and related national equivalents, or AGMA guidelines, specifying parameters like module or pitch, pressure angle, and addendum. In precision devices, designers aim for low backlash and high repeatability in ozubené parts.

History and scope: Gears have a long history in engineering, evolving from early metalworks to modern high-precision gear trains. Ozubené components underpin many applications, including automotive transmissions, industrial machinery, robotics, clocks, and timing systems. The term remains common in Czech and Slovak technical vocabulary to denote toothed mechanical parts.