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HSK-A63 / HSK-A100 (HSK63A / HSK100A) HC power milling chuck HC20 HC25 HC32 DIN 69893

Kortools

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€173.23

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Size

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HSK63A-HC20-100

HSK63A-HC25-100

HSK63A-HC32-120

HSK100A-HC20-105

HSK100A-HC25-105

HSK100A-HC32-120

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Product description

HSK-A63 / HSK-A100 HC power milling chuck DIN 69893 (HSK63A, HSK100A): HC20, HC25, HC32

Power milling chuck with an HSK-A63 or HSK-A100 taper to DIN 69893 (ISO 12164). A tool with a cylindrical shank of diameter d is clamped directly in the bore, and smaller shanks are clamped with reduction collets (range in the table).

HSK-A63: 20, 25 and 32 mm bores in lengths of 100 and 120 mm. HSK-A100: 20, 25 and 32 mm bores in lengths of 105 and 120 mm. Select the variant when purchasing.

Applications

milling, including roughing, with cylindrical-shank cutters
drilling and milling on CNC milling machines and machining centres with an HSK-A63 or HSK-A100 spindle (DIN 69893)

Specification

Taper type	HSK-A63 or HSK-A100 (DIN 69893 / ISO 12164), according to the variant code
Clamping type	HC power milling chuck
Bore diameter d	20, 25 or 32 mm (depending on variant)
Clamping range	HC20: 3–16 mm and 20 mm; HC25: 3–20 mm and 25 mm; HC32: 3–25 mm and 32 mm
Holder runout	≤ 0.008 mm
Balance grade	at least G6.3 (if you need G2.5, ask before purchasing)
Coolant	AD version (central coolant supply)
Material	case-hardened alloy steel (case depth 0.8 ± 0.2 mm)
Hardness	HRC 56–60
HSK taper	taper tolerance < AT3, surface roughness Ra < 0.2 µm
Standard	DIN 69893 (taper)

Balance grade: at least G6.3. If you need G2.5 for high spindle speeds, write to us before purchasing — we will check 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 / HSK-A100 (HSK63A / HSK100A) HC power milling chuck HC20 HC25 HC32 DIN

HSK-A63 (HSK63A)

Variant	d [mm]	D [mm]	L [mm]	L1 [mm]	Clamping range [mm]
HSK63A-HC20-100	20	50	100	73	3–16; 20
HSK63A-HC25-100	25	59	100	73	3–20; 25
HSK63A-HC32-120	32	72	120	77	3–25; 32

HSK-A100 (HSK100A)

Variant	d [mm]	D [mm]	L [mm]	L1 [mm]	Clamping range [mm]
HSK100A-HC20-105	20	50	105	73	3–16; 20
HSK100A-HC25-105	25	59	105	73	3–20; 25
HSK100A-HC32-120	32	72	120	77	3–25; 32

d – bore diameter, D – outer diameter of the clamping section, L – length from the HSK flange face (spindle side) to the holder front face, L1 – length from the front surface of the flange to the holder front face, clamping range – smaller diameters with reduction collets and diameter d directly.

How to select

Check whether the spindle has an HSK-A63 or an HSK-A100 interface and select a variant with that taper: the code starts with HSK63A or HSK100A.
Bore diameter d = tool shank diameter (e.g. a cutter with an Ø20 shank = HC20).
A smaller shank is clamped with a reduction collet from the range given in the table.

FAQ

Will it fit my machine?
The holder has an HSK-A63 or HSK-A100 shank to DIN 69893 (ISO 12164), according to the variant code. 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, and 63 and 100 are different sizes, so the designation “HSK” alone is not sufficient to confirm the selection.

How does HC differ from ER?
HC clamps a shank of the bore diameter d (or a smaller one with a reduction collet) and is intended for milling with high clamping force; ER covers a wide range of diameters with interchangeable ER collets.