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JIS SU+SP

SU-SP

Spiral Fluted Taps for Stainless Steels

Specification

・Product Name and Size.

<2DSU＋SPM2〜M6（coarse thread）
SU−SP〜M1.7, M2〜M6(fine thread), M8〜,
Oxideall U, all W
Recommended Tapping Speeds depending on Materials

Medium carbon steels High carbon steels Alloy steels Stainless steels

中炭素鋼10高炭素鋼10合金鋼10ステンレス鋼10
(m/min)(m/min)( m/ min)(m/min)

Product Features

  • Ideal for blind hole machining in stainless steel, chromium steel, molybdenum steel. These materials have remarkably high work hardening properties.
  • The optimum design of the thread section reduces the processing burden on each flutes cutting chamfer.
  • Reduces cutting resistance and increases tool life.
  • Chip discharge is stable and achieves a good surface finished.
  • Improved strength and life expectancy is achieved.
  • Use with either synchronous or asynchronous thread processing.

Tapping Data

Tapping Conditions [Ｍ6×１]

Workpiece MaterialＳＵＳ３０４（９０ＨＲＢ）SU+SP
Bored Hole Sizeφ５． ０Can Continue
Tapping length９ｍｍ, blind holeSSP
Tapping Speed８ｍ/ｍｉｎU-
Machinery TypeVertical machining center (perfect synchronous feed)0 2505007501,0001,250
Tapping FluidNon-water soluble cutting oil (chlorine-free)(Number ofholes tapped)

Speed chart Change in tapping torque

切削トルクの推移

Taps for blind hole tapping of stainless steel. （N-cm）

350 ♦ SU+SP

SLOWTapping SpeedFAST▲
SU - SP
5 m/min10m/min15 m/min20m/min30m/min
Work Piece MaterialParfect synchronous feed territoryWork Piece Material325
Hard-to-machineHard-to-machine▲
Stainless SteelZEN-BStainless Steel
SUS316 etc.SUS316 etc.300♦
SUS304SU2-SP SUS304
275▲ ♦
SU+SP▲
SUS303SU-SPSUS303250♦
510152030225♦
m/minm/minm/minm/minm/min

Tapping speed range by tap series 200 ■ Notes Initial 250holes 500holes 750holes 1,000holes [Number of holes tapped]

When tapping SS400 materials and soft steel materials with SU+SP, use a

synchronized feed machine. If they are tapped with a non-synchronized feed

drilling machine or the like, the internal thread may widen.