Runout Test Bars for Lathes, Chucks, and Turning Centers
Arbors for Centers
TAC Rockford runout arbors for lathe centers are manufactured using hardened gauge-quality steel, and include a certificate of accuracy.
A2 Spindle Arbors
Test arbor for mounting to turning-center and measuring run-out. Designed for A2-5, A2-6, D1-8 etc. lathe face mounting. Also available for flat 110 and 140 lathe face.
Extended drawbar clearance versions have additional depth at the taper needed for drawbar clearance on certain lathes.
Workholding Collet Arbors
TAC Rockford workholding spindle runout test bars provide a definitive standard for verifying the accuracy of 5C, TF, BS, and other collet spindles.
Designed for precision collet chucks, Swiss-style lathes, indexing heads, and grinding fixtures, a runout test bar provides an immediate, reliable baseline to diagnose spindle health, troubleshoot vibration issues, and certify machine alignment.
Additional product information can be found on the Details tab below.
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