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Item no.: 300642

HiRunER precision ER collet chuck SK 40 A = 70

Brand: GARANT
Concentricity ≤ 3
Shape ADB
Arbor standard ISO 7388-1
Balance quality G at rotational speed G 2.5 at 25,000 rpm
Machining strategy HSC
Machining strategy HPC
Arbor standard DIN 69871
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HiRunER precision ER collet chuck SK 40 A = 70

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Description

Version:

External and internal tapers are ground. All shanks are hard turned for a smooth cutting action. Including Balluffchip bore, high-performance clamping nut up to 25000 rpm.

Advantage:

  • 3 µm radial run-out with a 2 µm clamping nut, 6 µm radial run-out with a 5 µm clamping nut.
  • Extremely strong holding force (up to factor 2better than the standard ER chuck).
  • Vibration reduction effect due to 2-part clamping nuts.

Application:

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

Supplied with:

Precision clamping nut.

Optional extras:

Pull studs (PS) No. 308600 − 308806, PS wrenches No. 308810 − 308830, ER collets No. 308901 − 309434, ER clamping wrenches No. 309680 – 309720, Fahrion brand ER collets 308901 − 309434.

Note:

  • Clamps only nominal ⌀ up to shank ⌀ tolerance h 10.
  • Do not use the clamping nut in combination with a sealing washer.
  • Use in combination with Fahrion collets.

Use the precision collet chuck always in conjunction with the precision clamping nut No. 309617.

Technical Data

Arbor standard
DIN 69871 ; ISO 7388-1 
Shape
ADB 
Balance quality G at rotational speed
G 2.5 at 25,000 rpm 
Capacity
SK 40 A = 70 
Concentricity
≤ 3 µm
Machining strategy
HSC ; HPC