Page 94 - Yamawa_European_Catalogue_YEU21

Spiral Fluted Taps

HVSP
Intro

Z-PRO Series
SP Spiral Fluted Taps for large forged parts in the heavy

DIN metalworking industry
FEATURES
Z-PRO Series with BLF design for blind hole application.
2.5P
SL HSS-E OX Special geometry reduces cutting edge chipping
THCHT resulting in stable and longer life on steel, alloy steel and
stainless steel application.
OX treatment reduces welding troubles.
Recommended Tapping Speeds Depending On Materials
PO
ISO Vc (m/min) ISO Vc (m/min)
P1 3÷8 H M1 3÷8 H
P2 3÷8 H M2 3÷8 H
ST P3 3÷8 H
P4 3÷8 I
P7 3÷8 H WATCH
THE VIDEO
H 1st choice I suitable
ROLL

Tapping with HVSP Tapping with conventional SP DIN-HVSP
No chipping Chipping occurs on thread portion

CARBIDE Workpiece material Tapping Workpiece material Tapping
direction direction
BLF Conventional
geometry geometry

LONG

"Heel" Conventional
Forwarding Smooth chip Forwarding Chip jamming
Chamfer ejection Chamfer on reverse motion
HAND
TAPS

No chipping Chipping
EG (STI)

SPECIAL
THREADS,
GAUGES

THREAD Smooth chip ejection by HVSP Entangled chips
MILLS

DIES

CENTER
DRILLS

Technical
info

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