Supplied with :
Precision clamping nut.

Note :
Clamps only nominal ⌀ up to shank ⌀ tolerance h 10.Do not use the clamping nut in combination with a sealing washer.Use the precision collet chuck always in conjunction with the precision clamping nut No. 309617; 309618.Use in combination with Fahrion collets.The blue design ring must be removed for Fahrion HP 2µm ER collets.

Advantage :
Excellent concentricity in the system (chuck + collet + clamping nut), 3 µm radial run-out with a 2 µm collet, 6 µm radial run-out with a 5 µm collet.Extremely strong holding force (up to factor 2 better than the standard ER chuck).Vibration reduction effect due to 2-part clamping nut (one part for mini version).

Application :
For clamping tools with plain shank in collets to DIN 6499 - Form A and B.

Optional extras :
Coolant tube No. 309880, Socket wrench No. 309890, ER collets Fahrion No. 308901 and 309432. Hook wrench No. 628400, or torque wrench No. 309749 or No. 628520.

Version :
External and internal tapers are ground. All shanks are hard turned for smooth running. Including RFID/Balluffchip bore, high-performance clamping nut up to 25000 rpm.