Общий каталог Yamawa 2022 - 2023 - страница 636

⑥ Roll Tap Series 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 SURZ Spiral Fluted Taps (for blind hole) ① JIS SU Roll Taps Spiral Fluted Taps (for through hole) ② Specification <1.5D Coating Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels Stainless steels 低炭素鋼 中炭素鋼 ステンレス鋼 〜 5 〜 5 〜 5 Hand Taps ( m / min ) ( m / min ) ( m / min ) ④ Product Features ●Adopting the special form on tap's root, SURZ controls the minor diameter geometry of internal threads. ●Special lobe shape realizes low tapping torque. Cemented Carbide Taps ●High efficiency can be obtained in thread forming of stainless steel parts. ⑤ ●By adjusting bored hole size, you can adjust the minor diameter geometry of internal threads. Tapping Data Tapping condition [ M2×0.4 ] Roll Taps ⑥ Work Material SUS304 Tapping Length 5.2mm（Blind hole） Bored Hole Size φ1.85 〜φ1.82 POINT Tapping Speed 5m/min Feed Rigid In use, please select proper bored hole diameter. Special Thread Taps Simple Inspection Tools Tapping Vertical ⑦ Direction Machining center Machine （BT15） Water soluble cutting fluid Tapping Fluid (×20) Recommended bored hole diameter Pipe Taps before tapping ⑧ Bored Hole Size φ 1.84 φ 1.83  Unit : mm Cross Recommended Size Class Section Bored Hole Size Picture of M1 × 0.25 G4 0.90 Internal M1.2 × 0.25 G4 1.10 Threads M1.4 × 0.3 G4 1.28 Thread Mills Premium Thread Mills M1.6 × 0.2 G3 1.52 ⑨ Seam Shape Normal seams remain. Seams remain a little. M1.6 × 0.35 G4 1.46 Minor Diameter φ 1.62 φ 1.60 M1.7 × 0.35 G4 1.56 M2 × 0.4 G4 1.82 Bored Hole Size φ 1.82 φ 1.81 M2.3 × 0.4 G4 2.12 M2.5 × 0.45 G4 2.30 M2.6 × 0.45 G5 2.40 Cross Dies M3 × 0.5 G5 2.77 Section ⑩ Picture of No.2-56UNC G4 1.98 Internal No.4-40UNC G5 2.55 Threads No.6-32UNC G5 3.14 ※Recommended bored hole diameters shown in above table have been calculated by aiming at the thread engagement of 90% and Seam Shape Seams remain a little. No seam remains. by considering avoidance of tap breakage, based on our past Minor Diameter φ 1.59 φ 1.58 tapping test experiences. ※Recommended bore hole diameter may change because material Center Drills Centering Tools deformation can slightly change depending on material, ⑪ hardness, dimension of workpiece and tapping condition. M2×0.4 6H Internal Thread Minor Diameter and Tolerance Max. 1.679 Min. 1.567 Tolerance 0.112 JIS ⑥-59