Test Bars

Spindle alignment test bars are available in a number of shank configurations. Supplied in a wooden frame to store vertically, preventing distortion

View Catalogue


Spindle test bars are used in the machine tool spindle to detect and benchmark spindle run out. Test bars are a master for checking axis alignment with the machine or presetter spindle. Test bars are used in acceptance testing of machine tools in accordance with ISO recommendation R230

  • Precision test bars are used for checking the alignment and runout of spindles. 
  • Micron accuracy enable spindle assemblies to be checked and ensure they meet industry requirements.
  • Used to check spindle runout as part of routing machine maintenance and to bench mark new equipment.
  • Stored vertically in a wooden frame to prevent distortion
  • Large sizes are hollowed to reduce weight
  • Runout less than 0.003mm 


Test Bars
  • Precision hardened and ground steel bars
  • Run out over the measuring length of less than 0.003mm
  • Supplied with a wooden stand for vertical storage
  • Available in most tool shank formats SK, HSK, PSK
  • Larger test bars are hollowed out with a stepped bore to prevent distortion or incorrect measuring caused by the weight.

Related case studies

Contact Us

For more details on any of the items or articles shown please contact us by email or by phone on 

01604 583800  or  [email protected]

I give consent for Kelch Ltd to contact me via the following methods: