Sumitomo Electric has developed TME (external) and TMI (internal) threading inserts with a pitch range of 1 0 3 0 mm and 8 24 threads per inch (TPI) alon

Sumitomo Electric has developed TME (external) and TMI (internal) threading inserts with a pitch range of 1 0 3 0 mm and 8 24 threads per inch (TPI) alon

Sumitomo Electric has developed TME (external) and TMI (internal) threading inserts with a pitch range of 1.0 3.0 mm and 8 24 threads per inch (TPI) along with applicable LTE type and STI holders. The superior features of the TME and TMI threading inserts include an M-class tolerance and dimple shaped chipbreaker. The M-class tolerance reduces insert cost by eliminating the need for expensive grinding. Furthermore, chip control is greatly improved as a result of the specially designed dimple chipbreakers. Threading System FEATURES A positive rake angle encourages good chip control and reduces cutting resistance. Two tier dimple-style chip breakers evacuate chips smoothly and easily. M-class tolerance reduces insert cost. Four available grades cover a wider range of applications. INSERT GRADES & RECOMMENDED RUNNING CONDITIONS Application AC225 (Coated) For stainless and general steels Stable machining T130A (Cermet) For soft and general steels Good surface finish Long tool life A30 (P30 Carbide) For low and medium speed cutting of stainless and general steels EH20Z (PVD Coated) For exotic materials Recommended Running Conditions (SFM) Insert Wor Grade Material AC225 T130A A30 EH20Z Soft Steel 500 660 330 500 230 400 - Carbon Steel 330 550 0 03 64 0 03 33 - Alloy Steel 300 500 260 400 0 03 33 - Stainless Steel 230 450 0 03 33 - Exotics - 100 150 Trouble Shooting Chipping T130A IAC225 Excessive Wear A30 JAC225 IT130A Plastic Deformation A30 IaC225 IT130A Recommended Infeed Values mm (inch) Pitch (mm) 1.0 1.25 1.5 1.75 2 2.5 3 \TPI Pass 24 19 16 14 12 9 8 1st 0.25 (.010) 0.25 (.010) 0.30 (.012) 0.30 (.012) 0.30 (.012) 0.35 (.014) 0.35 (.014) Q Z CN 0.20 (.008) 0.20 (.008) 0.25 (.010) 0.25 (.010) 0.25 (.010) 0.30 (.012) 0.30 (.012) 3rd 0.15 (.006) 0.15 (.006) 0.20 (.008) 0.20 (.008) 0.20 (.008) 0.25 (.010) 0.25 (.010) 4th 0.10 (.004) 0.15 (.006) 0.15 (.006) 0.15 (.006) 0.20 (.008) 0.20 (.008) 0.20 (.008) 5th 0.05 (.002) 0.10 (.004) 0.10 (.004) 0.15 (.006) 0.15 (.006) 0.20 (.008) 0.20 (.008) 6th - 0.05 (.002) 0.05 (.002) 0.10 (.004) 0.12 (.005) 0.15 (.006) 0.15 (.006) 7th - 0.05 (.002) 0.10 (.004) 0.15 (.006) 0.15 (.006) 8th 0.05 (.002) 0.10 (.004) 0.15 (.006) 9th - 0.05 (.002) 0.10 (.004) 10th 0.10 (.004) 11th 0.05 (.002)