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SU+SP/SU-SP

Spiral Fluted Taps for Stainless Steels

Specification

E 2D

Oxide

～M2.6M26～SU＋SP～M6 (coarse thread)
Recommended Tapping Speeds depending on MaterialsSU－SP～M1.7, M8～, all U, all W

Alloy steels Stainless steels 〜10 〜10 For icon explanation, refer to P.50 Product features

  • Most suitable for stainless steels, sticky and tending to work-harden, as well as chrome steels and molybdenum steels, blind hole use.

●Reduction of cutting load on each cutting edge due to optimum design of thread portion.

  • Decrease of cutting resistance and increase of tool life.
  • Improvement of chip ejection and good thread finish.
  • Increase of tool life due to the improvement of tap strength.
  • Suitable for both rigid tapping machine and non-rigid tapping machine. Comparison of tool life Transition of tapping torque

の

（Number of （N-cm） tapped holes） 1,250

Still working 350 SU+SP

SU-SP 1,000 325 Tapping data

750 300

Tapping condition（M6×1）

275 Work material SUS304(90HRB) 500 Tapping speed 8m/min

Hole size φ5.0 250

Tapping length 9mm, blind hole 250 Vertical machining center 225 Machine

(with rigid feed)

Tapping fluidInsoluble oil without chlorine200
0

SU+SP SU-SP Initial 250holes 500holes 750holes 1,000holes

Number of tapped holes Products System System table of taps for stainless steels, blind hole use

SUS316 SU2-SP

SUS304 Synchronized feed zone SU-SP SUS303 AsynchronizedAsynchronized feed zonefeed zone

0m/min 5m/min 10m/min 15m/min 20m/min

Tapping speed