⑦ Special Thread Taps / Simple Inspection Tools Drill dia. Dc Overall length L Shank dia. Ds Neck length ℓn JIS ITRD Broken Tap Removal Tools TYPE:1 Spiral Fluted Taps (for blind hole) ① Spiral Fluted Taps (for through hole) ② Segment:52 Size Code Dc L Ds ℓn TYPE MSRP Dc × Ds × L (mm) (mm) (mm) (mm) Spiral Pointed Taps (for through hole) For Metric Threads ③ 6 × 8 × 60 ITZ6.00ZPWSI 6 60 8 30 1 ¥24,900 □ 7 × 8 × 70 ITZ7.00ZPWSI 7 70 8 35 1 ¥30,100 □ 8.5 × 10 × 75 ITZ8.50ZPWSJ 8.5 75 10 40 1 ¥36,900 □ Hand Taps ■Notes ④ ① Compatible machines include vertical type MC, NC, and milling machines. It cannot be used with a drilling machine. ② The depth of the tap to remove is 1.5D or less for spiral fluted taps or 1D or less for spiral pointed taps and hand taps. ③ Use a machine and tooling that have high stiffness. In addition, supply enough water-soluble cutting oil. ④ Although it is possible to remove a tap broken in forward tapping, ITRD cannot remove a tap broken in reverse tapping because Cemented Carbide Taps ⑤ the tap revolves and moves during removal. ⑤ The recommended material of workpiece is steel, which is high in cutting torque. For a soft material, such as aluminum, it is not possible to remove because the tap revolves and moves during removal. 【Broken during forward 【Broken during reverse tapping Roll Taps tapping motion】 motion or soft material】 ⑥ G73 G83 (Does not return to point R) (Return to point R) Fast feed Fast feed Cutting feed Cutting feed Return point Special Thread Taps Simple Inspection Tools ⑦ Return point R point R point The tap is fixed because The tap is not fixed there are no internal because there are some Pipe Taps ⑧ thread ridges. internal thread ridges. The tap will not revolve Therefore, the tap revolves even if machining load is and moves during removal. applied during removal. It cannot be machined. Z point Z point Thread Mills Premium Thread Mills ⑨ Remarks: The internal threads may be broken after using the ITRD. Therefore, there is no guarantee of the internal thread quality after the tap removal. Notes on use ◆Use a cover and wear safety goggles, because there is a danger of ◆When attaching the tool to a machine, fix it firmly so that there is no rattle or runout. Dies damage. ⑩ ◆Observe the proper cutting conditions, because there is a danger of ◆Fix the workpiece firmly so that it does not move during damage. machining. Do not use a tool showing signs of severe wear or ◆Never wear gloves while the tool is revolving, because they with chipping on cutting edges. might get caught. ◆Be sure to take disaster prevention measures, because there is a ◆Wear safety shoes, because your foot might get injured by a danger of fire due to possible high temperature and heat falling tool. generated during cutting. Center Drills Centering Tools ⑪ JIS ⑦-81 ※ = Specified Distribution Items. Made to order products. □=In stock at manufacturer.