JIS EH-PO

Spiral Pointed Taps for Hard-to-Machine Materials

Specification

Recommended Tapping Speeds depending on Materials

High carbon steelsThermal refined steelsThermal refined steels
5高炭素鋼105調質鋼10調質鋼5
(m/min)(m/min)( m/ min)

25〜35HRC 35〜45HRC Product Features

  • The EH-PO taps are suitable for high hardness materials from 30 to 45 HRC in high carbon steel, alloy steel forging, tempering material and mold materials.
  • Tool life is greatly improved using a cutting edge shape suitable for difficult to machine materials. The tap exhibits excellent wear resistance.

●For through hole applications.

Tapping Data

Processing conditions [M10×1.25 P4]

Workpiece MaterialS55C/A hub
Bored Hole Sizeφ8.8EH-PO
Tapping Length11mm(Through hole)Can continue
Tapping Speed10m/min
Machinery TypeVertical machining center (asynchronous)Competitors POWear
HolderWith tension
Tapping FluidWater soluble cutting fluid0 100200 (Number of holes300 processed.)400500

Recommendation chart

Slow Tapping Speed Fast

Work piece1351015Work piece
m/minm/minm/minm/minm/min
MaterialMaterial
60HRC60HRC
UH-CT※UH-CT、EH-CT Use a
High55HRC55HRCHigh
machine with
HardnessHardness
55HRCsynchronous lead feed. 55HRC
MaterialMaterial
EH-CT
45HRC45HRC
Tempered45HRC45HRCTempered
MaterialMaterial
25HRCEH-HT 25HRC
Tool SteelEH-POTool Steel
SKS・SKDSKS・SKD
Alloy・ r・ r Alloy
SteelSCMSCM SCSC Steel
HighHC+SPHigh
CarbonHC -SPCarbon
SteelS45CHC+PO S45CSteel
MediumHC -POMedium
S45CS45C
CarbonCarbon
SteelS30CS30CSteel

1m/min 3m/min 5m/min 10m/min 15m/min

Processing range chart.