Общий каталог Yamawa 2022 - 2023 - страница 148

① Spiral Fluted Tap Series for blind hole Overall
length
L
Thread
length
ℓ
Thread + Neck
length
ℓn
Shank
length
ℓs
Shank
dia.
Ds
Size of
square
K
Length of
square
ℓk
JIS
SU2-SP
Spiral Fluted Taps
(for blind hole)
①


JIS Spiral Fluted Taps for Tough Stainless Steels
Spiral Fluted Taps
(for through hole)
②


Specification
Spiral Pointed Taps
(for through hole)


Oxide
③


Recommended Tapping Speeds depending on Materials
Low carbon steels Medium carbon steels High carbon steels Alloy steels Stainless steels
低炭素鋼 中炭素鋼 高炭素鋼 合金鋼 ステンレス鋼

5 20 5 20 5 20 5 20
〜 〜 〜 〜
5 15〜
Hand Taps


( m / min ) ( m / min ) ( m / min ) ( m / min ) ( m / min )
④


Product Features
●The SU2-SP is a spiral flute tap for hard to cut stainless steel that is optimum for blind hole BLF Shape
Cemented
Carbide Taps


machining of stainless steel such as SUS 316 and SUS 317.
⑤


●It is a special design of full threads for the first few threads and the balance are half the thread height.
●With this special shape, it is effective in the prevention of flute chipping of the full threads. It reduces
tapping torque and has good abrasion resistance while allowing to maintain the screw thread guide
specifications.
●It has improved chip ejection from the unique flute design.
Roll Taps
⑥


Tapping Data
Thread Size [M12×1.75]
Workpiece Material SUS316
SU2-SP
Bored Hole Size φ10.3
Can Continue
Special Thread Taps
Simple Inspection Tools


Tapping Length 25mm blind hole
⑦


Machinery Type CNC tapping machine SU-SP
Tapping Speed 8m/min
0 200 400 600 800
Tapping Fluid Non-water soluble cutting oil
（Number of holes processed.）
Pipe Taps
⑧


Characteristics of stainless steel
・
 It work hardens easily. Chip welding occurs frequently. Type of Material Element Content (%)
Chip ejection is poor.・It tends to shrink. Ni Cr
・Tool friction tends to occur. SUS303 8.00 〜 10.00 17.00 〜 19.00
Thread Mills
Premium Thread Mills
⑨


SUS304 8.00 〜 10.50 18.00 〜 20.00
In general wear, austenitic stainless steel have the characteristics
described above and are regarded as difficult to cut materials. Among
SUS316 10.00 〜 14.00 16.00 〜 18.00
these stainless steels there are a few that have a higher Ni content. SUS317 11.00 〜 15.00 18.00 〜 20.00
Austenitic stainless steel with the Ni content of more than 10% such
as SUS 316 is regarded as "difficult-to-cut stainless steel".
Dies
⑩
Center Drills
Centering Tools
⑪


JIS
①-113