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

High-Precision Chuck
JIS B 6339-2 · BT40
Certificate of Quality
- Chuck fine balanced G2.5 at 25.000 rpm
- All functional surfaces fine machined
- Taper tolerance AT3
- Coolant supply form JD/JF
High-Precision Chuck
JIS B 6339-2 · BT40
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 taper JIS B 6339-2 BT 40 form JD/JF.
Form JD/JF: interior coolant supply through centre (Form JD) and through the collar (form JF)
- 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 available for High-Precision Chuck
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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40.620.01 | ![]() short, 65.00 mm |
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Accessory | ||
40.621.01 | ![]() long, 100.00 mm |
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Accessory |