CNC Collet Chuck Milling

SD Precision Collet Holders are equally good for drilling, milling, reaming, tapping and other operations.
The gripping force of SD Precision Collet Holders is twice more than the ordinary collet due to its 8 degree cone. The SD Precision Collet Holder design shortens the suspended length of a collet. The nuts of SD Precision Collet Holders are ground and balanced. The clamping runout accuracy of SD Precision Collet Holders is within 0.007 mm (for collet grade AA).
The standard dynamic balance of SD Precision Collet Holders is 16000 rpm/G6.3; while optional balance is 24000 rpm/G2.5.
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ER Collet Holders are most suitable for normal accuracy machining jobs including drilling, milling, reaming and tapping. ER Collet Holders give very good performance vs price ratio.
ER Collet Holders? standard balance is 8000 rpm/G6.3; higher balance grade is available on special order. The runout accuracy of ER Collet Holders? bore taper is not less than 0.005 mm. The standard ER Collet Holder shank is 7/24 taper according to ISO-AT3 with surface roughness Rz 2.5.
ER Clamping Nuts are balanced dynamically and allow higher speed of ER Collet Holders. There is a choice of smaller diameter ER Clamping Nuts designated as Type M. Please indicate when ordering.

CAUTION: In order to avoid damage - don't tighten the ER Clamping Nuts on more than indicated maximum torques.
Collets, pull studs, coolant pipes and spanners should be ordered additionally.
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