Page 186 - Yamawa_European_Catalogue_YEU23

Left spiral fluted taps

MHSL Mini
Intro

Z-PRO Series
SP
Left Spiral Fluted Taps for Thermal Refined Steel <45HRC,
Coated
FEATURES
Z-PRO Series for tapping through holes on indexable
5P holders.
SL HSS-Co COATING
SYNCHRO THCHT Suitable for alloy steel (1.7225 - 42 CrMo 4, 1.6582 - 34
CrNiMo 6, 1.2344 - X 40 CrMoV 5 1) <45HRC.
DIN
Long life, excellent chip ejection and thread finishing.
Recommended Tapping Speeds Depending On Materials
PO
ISO Vc (m/min)
P2 3÷16 +
P3 3÷16 +
ST P4 3÷16 +
P5 3÷10 +
P6 3÷8 +
+ 1st choice , suitable
ROLL

DIN-MHSL Mini
Suitable for tough steel
CARBIDE

LONG

HAND
TAPS
Mould parts. Indexable tool holder.

EG (STI) Process Data
M2.5x0.45 Wear condition after 200 threads Thread quality
Work-material 42CrMo4 (45HRC)
SPECIAL Hole diameter Ø 2.1
THREADS,
GAUGES Tapping length 5 mm
Tapping speed 5 m/min
Machine CNC machine
THREAD Lubricant Water soluble oil
MILLS
Suggestion for threading on slant exit holes
When tapping internal threads with slant surface exit (image 1), spot facing (image 2), is recommended to prevent tap breakage.
DIES

CENTER
DRILLS Spot facing

Technical
info (image 1) (image 2)

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