Chat with us, powered by LiveChat

Technical specifications SK30/SK40/SK50 

STEEP TAPER DIN ISO 7388-1(FORMERLY DIN 69871)

HAIMER Steilkegel Werkzeugaufnahmen SK30 SK40 SK50 | © HAIMER

The traditional interface for milling spindles DIN ISO 7388-1 (formerly 69871) distinguishes itself through its extremely robust design. Its field of application ranges from fine machining to heavy duty roughing. The tool holder is pulled in the milling spindle with the help of an additional pull stud. The centering takes place via the taper contact. Therefore, the DIN ISO 7388-1 (formerly 69871) interface is primarily suitable for applications with a spindle speed of up to 12,000 rpm.

Steep taper SK30

© HAIMER
  • Tool holders case-hardened 60 – 2 HRC
  • Tensile strength in the core at least 950 N/mm2
  • Taper in tolerance quality AT3
  • Angle of cone: 8° 17'50'' +4''
  • Incl. bore for data chip Ø 10 mm
  • Form AD/AF: interior coolant supply through centre (form AD) and through the collar (form AF)
SK30 D1 D2 D3 max D4 D5 D6 L1 L2 L3 L4 min. L5 T T1 B1 B2 B3
[mm] 31,75 13 43 50 - 10 47,8 19,1 15,9 35 11,1 M12 4,65 16,1 16,4 19

Steep Taper Sk40

© HAIMER
  • Tool holders case-hardened 60 – 2 HRC
  • Tensile strength in the core at least 950 N/mm2
  • Taper in tolerance quality AT3
  • Angle of cone: 8° 17'50'' +4''
  • Incl. bore for data chip Ø 10 mm
  • Form AD/AF: interior coolant supply through centre (form AD) and through the collar (form AF)
SK40 D1 D2 D3 max D4 D5 D6 L1 L2 L3 L4 min. L5 T T1 B1 B2 B3
[mm] 44,45 17 48 63,55 54 10 68,4 19,1 15,9 35 11,1 M16 4,65 16,1 22,8 25

Steep Taper SK50

© HAIMER
  • Tool holders case-hardened 60 – 2 HRC
  • Tensile strength in the core at least 950 N/mm2
  • Taper in tolerance quality AT3
  • Angle of cone: 8° 17'50'' +4''
  • Incl. bore for data chip Ø 10 mm
  • Form AD/AF: interior coolant supply through centre (form AD) and through the collar (form AF)
SK50 D1 D2 D3 max D4 D5 D6 L1 L2 L3 L4 min. L5 T T1 B1 B2 B3
[mm] 69,85 25 78 97,5 84 10 101,75 19,1 15,9 35 11,1 M24 4,65 25,7 35,5 37,7

Coolant supply DIN ISO 7388-1 

According to DIN ISO 7388-1 (formerly DIN 69871)

© HAIMER

3 POSSIBILITIES OF INNER COOLANT SUPPLY ARE AVAILABLE:

  • Form A: No inner coolant supply
  • Form AD: Central coolant supply through retention knob. A retention knob with centralized bore is required.
  • Form AF: Lateral coolant supply via the collar. A sealed retention knob is required.

RETENTION KNOB IS REQUIRED. HAIMER TOOL HOLDERS WITH TAPER ACCORDING TO DIN ISO 7388-1 (FORMERLY DIN 69871) ARE PERFORMED IN FORM AD/AF UNLESS OTHERWISE NOTED

Unless otherwise stipulated, the tool holders are delivered in form AD. The bores at the collar for form AF are then sealed with plastic-dowels and secured with lock screws.

For changing to form AF, the bores at the collar must be opened by unscrewing the lock screw halfway. Extraction of screws together with thedowels by using pliers.
The bores also can be sealed again. A conversion kit consisting of dowels and lock screws is available.

Attention: Each dowel for single use only!

Call us

Headquarters Igenhausen

+49-8257-99880

Open: 8:00 - 18:00 

Write to us

fast and easy

Do you have questions about HAIMER, would you like more information about our products or an individual offer?

Write to us

Sales contact

Find us here

Do you have questions about HAIMER, would you like more information about our products or an individual offer?

Sales contact

Newsletter

stay updated

You want to get the most important HAIMER news directly to your inbox? You have come to the right place.

Subscribe to the newsletter