
Certificate of Quality
- Chuck fine balanced G2.5 at 25.000 rpm
- All functional surfaces fine machined
- Taper tolerance AT3
- Coolant supply form AD/AF
Your current product selection:

High-Precision Chuck
DIN ISO 7388-1 SK50 (formerly DIN 69871)
Certificate of Quality
- Chuck fine balanced G2.5 at 25.000 rpm
- All functional surfaces fine machined
- Taper tolerance AT3
- Coolant supply form AD/AF
High-Precision Chuck
DIN ISO 7388-1 SK50 (formerly DIN 69871)
For high-precise clamping of tools with cylindrical shank with special collets. Also for shanks with clamping flats. Very useful for high-speed machining.
With steep taper SK50 form AD/AF DIN ISO 7388-1 (formerly DIN 69871).
Form AD/AF means: Central coolant supply and coolant channels on the collar which can be sealed again.
- Delivery comprises: High-precision chuck with clamping screw and pull-out hook without collet
- Shank tolerance h6
- Optional: Cool Jet bores on HG Collets from Ø 6 mm
- Extensions for High-Precision Chuck available
Technical data subjects to change without prior notice.
Technical drawing

Please select your clamping diameter:
Version | HG 01 |
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Ø D [mm] | 30 |
Clamping Ø [mm] | 2,0 - 8,0 |
Order No. | Gage length A in mm | |||||
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50.420.01 | ![]() short, 65.00 mm Also suitable for ANSI-CAT |
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Accessory | ||
50.421.01 | ![]() long, 100.00 mm Also suitable for ANSI-CAT |
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Accessory | ||
50.422.01 | ![]() oversize, 160.00 mm Also suitable for ANSI-CAT |
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Accessory |