Buy HSK Spindle Runout Test Bar (CNC Specialty Store)

HSK Spindle Test Bar Runout Arbor

The largest causes of excessive tool wear and tool breakage are machine tool spindle runout and excessive slop or axial play. The spindle runout test bar can be used to test your CNC machine tools for precision accuracy and proper alignments. Test bars ensure a stable production environment and consistency when moving jobs from one machine to another.

Spindle Runout Testbars are easy to use and they fast way to verify your machine spindle is running properly. Check them after a machine has been crashed and take the proper steps to prevent unintentionally making scrap parts.

HSK Testbar Tolerance and Accuracy

0.003 mm (3 micron) or 0.0001in. or better.
Runout arbors include certificates.

Retention knobs are not included. (use one from your machine, as they differ from one machine to the other.)

Spindle Runout Gauge Size	Dia.	Gauge Length	Part Number
HSK-A/C/E 25 Test Bar	20	140	K7500-40
HSK-A/C/E 32 Test Bar	24	180	K7500-41
HSK-A/C/E 40 Test Bar	25	200	K7500-44
HSK-A/C/E A63 Test Bar	40	346	K7500-46
HSKA50 Test bar	32	346	K7500-47
HSKF63 Test bar (no drive keys)	40	346	K7500-42
HSKA100 / C100 Test bar	50	330	K7500-48
HSK A/C/E 125 Test bar	40	349	K7500-49

PLEASE VERIFY DIMENSIONS BELOW! HSK A63 AND F63 is actually a 50size!
Very confusing and restocking fees may apply since they must be sent out for recalibration verification to make sure testbar was not damaged.