ROYAL Supporti CAT
Runout is guaranteed to be 0.0002" TIR or better. Taper is ground to AT-3 specs for a precise, rigid fit with the machine tool spindle taper. All Royal End Mill Holders have an h5 bore tolerance for optimum cutting tool surface contact. Balanced by design to G6.3@10,000 rpm. A central thru-coolant feature is standard on all Royal End Mill Holders.
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