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The spindle interface JIS B 6339 as the traditional interface for milling spindles distinguishes itself through it 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 JIS B 6339 interface is primarily suitable for applications with a spindle speed of up to 12,000 rpm.

Available models

HAIMER BT30
Technical Specifications
Clamping Ø D1
3 mm.
Ø D2 ultra short
10 mm.
Ø D2
10 mm.
Ø D3 ultra short
-
Ø D3
-
L
9 mm.

HAIMER BT40
Technical Specifications
Clamping Ø D1
3 mm.
Ø D2
10 mm.
Ø D3
-
L
9 mm.

HAIMER BT50
Technical Specifications
Clamping Ø D1
6 mm.
Ø D2
21 mm.
Ø D3
27 mm.
L
36 mm.

Key Features

  • Heat resistant hot-working steel.
  • Hardened 54 – 2 HRC.
  • For HSS and solid carbide tools.
  • Shank tolerance h6.
  • Cooling with Cool Jet for an extra charge.
  • Cooling with Cool Flash for an extra charge.
  • Included in delivery: Back-up screw.
  • 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.
  • Inch sizes: Cool Jet bores that can be sealed included.
  • Metric sizes: Cooling with Cool Jet for an extra charge.
  • Cooling with Cool Flash for an extra charge.
  • Included in delivery: Back-up screw.
  • 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.
  • Inch sizes: Cool Jet bores that can be sealed included.
  • Metric sizes: Cooling with Cool Jet for an extra charge.
  • Cooling with Cool Flash for an extra charge.
  • Included in delivery: Back-up screw.
  • Machinery & Manufacturing
Haimer GmbHHAIMER is a family run, medium size company located in Igenhausen, Bavaria near Augsburg, Germany. We design, produce and sell innovative, high precision products for metal cutting as well as for other branches including automotive, aerospace, energy, rail and general machining. In addition to our large offering of tool holders in all popular interfaces and lengths, including our shrinking and balancing machines, as well as our 3-D Sensors, solid carbide cutting tools, our product offering now also includes tool presetting machines.
[HAIMER, Tool Holders, Milling, Machining, Tool holding, Milling spindle, Taper, Shrink fit, HAIMER Tool Holders, HAIMER Tool holding]