Tengelyszer

Tengelyszer is a Hungarian term used in mechanical and manufacturing contexts to refer to tools or devices that establish, set, or verify the alignment of axes in machinery. The word combines tengely (axis) with szer, a suffix indicating a device or instrument, and in practice it can denote a range of tools rather than a single standardized instrument. Because it is a regional term, its precise meaning can vary between workshops and industries.

In use, a tengelyszer generally relates to ensuring correct axis alignment and coaxiality of components such as spindles, shafts, gears, or wheel hubs. It is commonly encountered during initial setup of machine tools (for example lathes and milling machines), during assembly of transmission or rotating assemblies, and in quality-control procedures where runout and parallelism must be checked. Because exact terminology differs, the same concept may be described with more specific names in English-language contexts (such as alignment gauges, dial indicators, or straightedges) and in Hungarian manuals the term tengelyszer may encompass several related instruments.

Types and approaches associated with tengelyszer range from passive measuring devices—like master bars, gauge blocks, and dial indicators mounted on stands—to active alignment systems, including laser or optical methods used for precise coaxial alignment. The choice of tool depends on available equipment, required precision, and the specific engineering task. See also alignment, coaxiality, spindle alignment, and runout measurement for related concepts.