DIN ISO 7388-1 SK40 with face contact (formerly DIN 69871)

Shrink fit chuck suitable to all kind of shrink fit units.

With steep taper SK40 with face contact form AD similar DIN ISO 7388-1 (formerly DIN 69871).
Form AD means: interior coolant supply through centre.

• Additional support on the flange surface for more rigidity
• Heat resistant hot-working steel
• Hardened 54 – 2 HRC
• For HSS and solid carbide tools
• Shank tolerance h6
• With threaded holes in order to balance with balancing screws
• Cooling with Cool Jet for an extra charge
• Cooling with Cool Flash for an extra charge
• Included in delivery: Backup screw

Each item is subject to a minimum purchase quantity of 3 pcs.

Technical data subjects to change without prior notice.

Standard version, similar to DIN 69882-8.

The most important features:

• 1. High runout accuracy (< 0.003 mm)
• 2. Extreme clamping torque by high pressing in the clamping bore
• 3. Short chamfer
• 4. Dynamic form: Reinforced shank at long tool holders. Compromise between slimness (marginal interference contour) and rigidity
• 5. Cool Jet (on request)
• 6. Threaded bores for simple and fast balancing with screws

Cool Jet (optional)

• Optimized coolant bores, aimed at center
• Coolant directly to the cutting edge
• Extended tool life up to 100%
• Higher reliability of cutting process
• No more balls of chips on tool
• Cool Jet starting from shank diameter 6 mm

Cool Flash (optional)

• Optimized coolant bores with coolant outlet through slots
• Coolant directly to the cutting edge
• Extended tool life up to 100%
• No more balls of chips on tool
• Optimized runout accuracy! No additional unbalance! No disturbing clearance!
• Cool Flash available for shank diameter 6 - 25 mm