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HSK-A63 (HSK63A) DIN 69893 shrink fit chuck 4.5° with coolant channels, Ø3–32 mm

Kortools
Availability:
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Price €151.57
(incl. 23% VAT)

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Individual variants may differ in price

Select HSK63A-SF03-80K HSK63A-SF04-80K HSK63A-SF05-80K HSK63A-SF06-80K HSK63A-SF08-80K HSK63A-SF10-85K HSK63A-SF12-90K HSK63A-SF14-90K HSK63A-SF16-95K HSK63A-SF18-95K HSK63A-SF20-100K HSK63A-SF25-115K HSK63A-SF32-120K HSK63A-SF03-120K HSK63A-SF03-160K HSK63A-SF04-120K HSK63A-SF04-160K HSK63A-SF05-120K HSK63A-SF05-160K HSK63A-SF06-120K HSK63A-SF06-160K HSK63A-SF08-120K HSK63A-SF08-160K HSK63A-SF10-120K HSK63A-SF10-160K HSK63A-SF12-120K HSK63A-SF12-160K HSK63A-SF14-120K HSK63A-SF14-160K HSK63A-SF16-120K HSK63A-SF16-160K HSK63A-SF18-120K HSK63A-SF18-160K HSK63A-SF20-120K HSK63A-SF20-160K HSK63A-SF25-120K HSK63A-SF25-160K HSK63A-SF32-160K
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Product description

HSK-A63 (HSK63A) DIN 69893 shrink fit chuck 4.5° with coolant channels, Ø3–32 mm

Shrink fit chuck with coolant channels and a HSK-A63 taper to DIN 69893 (ISO 12164) taper. A cylindrical-shank tool is clamped without a collet: the heated bore of the chuck expands, the shank is inserted to the set depth, and as the chuck cools down it clamps the shank around its full circumference. The tool is removed after heating the chuck again. The clamping section has a 4.5° angle.

Coolant channels: coolant supplied through the spindle centre exits at the front face of the chuck, next to the tool shank (face outlet). In a standard shrink fit chuck the coolant flows only through the centre, through a tool with internal coolant channels.

A shrink fit chuck requires an induction shrink fit unit: without heating, the tool cannot be inserted or removed. The shrink fit unit is not included.

Available for shank diameters Ø3–32 mm in length L = 80 mm (Ø3–8), 85 mm (Ø10), 90 mm (Ø12 and Ø14), 95 mm (Ø16 and Ø18), 100 mm (Ø20), 115 mm (Ø25) and 120 mm (Ø32), and in extended versions L = 120 and 160 mm. Select the variant when purchasing. Diameters Ø3–5 mm have no stop screw thread (G “–”): set the tool by its insertion depth.

Applications

  • clamping end mills, drills and reamers with cylindrical shanks, most often made of solid carbide
  • coolant at the tool even if the tool has no internal coolant channels: it exits at the front face of the chuck
  • precise machining: holder runout ≤ 0.003 mm
  • high tool clamping force

Specification

Taper type HSK-A63 (DIN 69893 / ISO 12164)
Tool clamping shrink fit, clamping section angle 4.5°
Coolant channels in the chuck, coolant exits at the front face; central supply (AD)
Tool shank diameter d 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 25 or 32 mm (depending on variant)
Tool shank cylindrical, with a diameter equal to d of the variant
Chuck diameter at the front face D 15–44 mm (depending on variant)
Length L 80–160 mm (depending on variant)
Holder runout ≤ 0.003 mm
Balance grade at least G6.3 (many pieces are balanced to G2.5 at 25,000 rpm: ask us and we will check the label of the specific piece)
Tool projection setting thread G for a stop screw in the bore (dimension table), adjustment range 10 mm; the smallest diameters have no thread G (“–” in the table)
Tool insertion and removal induction shrink fit unit (not included)
Standard DIN 69893 / ISO 12164 (taper)

Balance grade: at least G6.3. Many shrink fit chucks of this series are balanced to G2.5 at 25,000 rpm (more precise). If you need G2.5 for high spindle speeds, write to us before purchasing — we will check the label of the specific piece before shipping.

Coolant: AD version. If your spindle supplies coolant in a different way, write to us before purchasing.

Dimension table

Dimension drawing – HSK-A63 (HSK63A) DIN 69893 shrink fit chuck 4.5° with coolant channels, Ø3–32 mm

Variant d [mm] D [mm] D1 [mm] L [mm] L2 [mm] L1 [mm] G
HSK63A-SF03-80K 3 15 20 80 54 – –
HSK63A-SF03-120K 3 15 20 120 94 – –
HSK63A-SF03-160K 3 15 25 160 134 – –
HSK63A-SF04-80K 4 15 20 80 54 – –
HSK63A-SF04-120K 4 15 20 120 94 – –
HSK63A-SF04-160K 4 15 25 160 134 – –
HSK63A-SF05-80K 5 15 20 80 54 – –
HSK63A-SF05-120K 5 15 20 120 94 – –
HSK63A-SF05-160K 5 15 25 160 134 – –
HSK63A-SF06-80K 6 21 26.5 80 54 36 M5
HSK63A-SF06-120K 6 21 27 120 94 36 M5
HSK63A-SF06-160K 6 21 32 160 134 36 M5
HSK63A-SF08-80K 8 21 26.5 80 54 36 M6
HSK63A-SF08-120K 8 21 27 120 94 36 M6
HSK63A-SF08-160K 8 21 32 160 134 36 M6
HSK63A-SF10-85K 10 24 30.5 85 59 42 M8×1
HSK63A-SF10-120K 10 24 32 120 94 42 M8×1
HSK63A-SF10-160K 10 24 34 160 134 42 M8×1
HSK63A-SF12-90K 12 24 31 90 64 47 M10×1
HSK63A-SF12-120K 12 24 32 120 94 47 M10×1
HSK63A-SF12-160K 12 24 34 160 134 47 M10×1
HSK63A-SF14-90K 14 27 34 90 64 47 M10×1
HSK63A-SF14-120K 14 27 34 120 94 47 M10×1
HSK63A-SF14-160K 14 27 42 160 134 47 M10×1
HSK63A-SF16-95K 16 27 34 95 69 50 M12×1
HSK63A-SF16-120K 16 27 34 120 94 50 M12×1
HSK63A-SF16-160K 16 27 42 160 134 50 M12×1
HSK63A-SF18-95K 18 33 41 95 69 50 M12×1
HSK63A-SF18-120K 18 33 42 120 94 50 M12×1
HSK63A-SF18-160K 18 33 51 160 134 50 M12×1
HSK63A-SF20-100K 20 33 42 100 74 52 M16×1
HSK63A-SF20-120K 20 33 42 120 94 52 M16×1
HSK63A-SF20-160K 20 33 51 160 134 52 M16×1
HSK63A-SF25-115K 25 44 52.5 115 89 58 M16×1
HSK63A-SF25-120K 25 44 52.5 120 94 58 M16×1
HSK63A-SF25-160K 25 44 52.5 160 134 58 M16×1
HSK63A-SF32-120K 32 44 52.5 120 94 62 M16×1
HSK63A-SF32-160K 32 44 52.5 160 134 62 M16×1

d – bore diameter (tool shank), D – chuck diameter at the front face, D1 – diameter at the base of the clamping section, L – length from the flange face (spindle side) to the chuck front face, L2 – length from the front surface of the flange to the chuck front face, L1 – maximum shank insertion depth, G – thread of the stop screw for setting the tool projection (adjustment range 10 mm), N – stop screw adjustment range (10 mm), “–” – no thread.

Read the complete designation of the selected variant. For example, HSK63A-SF12-90K means a HSK-A63 taper, a shrink fit chuck (SF) with coolant channels (K) for a Ø12 mm shank and length L = 90 mm.

How to select

  • Check that the spindle has an HSK-A63 interface (form A, size 63).
  • Diameter d = tool shank diameter (e.g. an end mill with a Ø12 shank = a variant with “12” in the code). The shank must be cylindrical.
  • Choose the version with coolant channels if you want coolant at the tool and your spindle supplies it through the centre (AD).
  • An induction shrink fit unit is needed to insert and remove the tool.

FAQ

Will it fit my machine?
The holder has an HSK-A63 shank to DIN 69893 (ISO 12164). Before purchasing, confirm the form and size of the spindle interface in the machine documentation. HSK-A, HSK-E and HSK-F are different shank forms, so the designation “HSK63” alone is not sufficient to confirm the selection.

Do I need a shrink fit unit?
A shrink fit chuck requires an induction shrink fit unit: without heating, the tool cannot be inserted or removed. The shrink fit unit is not included.

Which tools can be clamped?
Tools with a cylindrical shank with a diameter equal to d of the selected variant, most often made of solid carbide. The insertion depth must not exceed L1 from the dimension table.

How does it differ from a standard shrink fit chuck?
It has channels through which coolant supplied through the spindle centre exits at the front face of the chuck, next to the tool. The tool clamping method (4.5° angle) and the dimensions are the same as in a standard shrink fit chuck of the same diameter and length.

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