SumiGrip Jr. STFS Type ■ Inserts for STFS (commonly used for SumiGrip/SumiGrip Jr.) Neutral (N) Right handed (R) 2-R0.2* Left handed (L) 8° 2-R0.2* 2°CW 2° 2° CW 2° 2° CW 2° 8° 2-R0.2* Dimensions (mm) *WCF□ 2T : 2-R0.15 External appearance Cat. No. Coated carbide Cermet Carbide Width of cut Applicable holders AC830P AC225 AC1030U T1500A A30 G10E CW WCF N○-GG WCF N2-GG D Q Q Q Q 2.0 STFS R/L○○○○-2 General purpose WCF N3-GG D Q Q Q Q 3.0 STFS R/L○○○○-3 WCF N4-GG D Q Q Q Q 4.0 STFS R/L○○○○-4 WCF N5-GG D Q Q Q Q 5.0 STFS R/L○○○○-5 WCF N○-GF WCF N2-GF Q D Q Q Q 2.0 STFS R/L○○○○-2 Exotic alloy WCF N3-GF Q D Q Q Q 3.0 STFS R/L○○○○-3 For low feed WCF N4-GF Q D Q Q Q 4.0 STFS R/L○○○○-4 WCF N5-GF Q D Q Q Q 5.0 STFS R/L○○○○-5 WCF □○-CF WCF R3-CF Q D Q Q Q 3.0 STFS R/L○○○○-3 Exotic alloy WCF L3-CF Q D Q Q Q 3.0 For low feed WCF R4-CF Q D Q Q Q 4.0 (Left handed or STFS R/L○○○○-4 right handed) WCF L4-CF Q D Q Q Q 4.0 WCF □2T WCF N2T D Q Q Q Q Q 2.0 For small diameter WCF R2T D Q Q Q Q Q 2.0 STFS R/L○○○○-2 Low cutting force WCF L2T D Q Q Q Q Q 2.0 type WCF □○ WCF N3 D Q Q Q Q Q 3.0 Without WCF R3 D Q Q Q Q Q 3.0 STFS R/L○○○○-3 chipbreaker WCF L3 D Q Q Q Q Q 3.0 F For general WCF N4 D Q Q Q Q Q 4.0 steel WCF R4 D Q Q Q Q Q 4.0 STFS R/L○○○○-4 Cut-Off WCF L4 D Q Q Q Q Q 4.0 Tools WCF N5 D Q Q Q Q Q 5.0 WCF R5 D Q Q Q Q Q 5.0 STFS R/L○○○○-5 WCF L5 D Q Q Q Q Q 5.0 WCF □○A WCF N2A D Q Q 2.0 STFS R/L○○○○-2 Grooving Exotic alloy WCF N3A D Q D D D 3.0 For low feed WCF R3A D Q D 3.0 STFS R/L○○○○-3 Cut-Off WCF L3A D Q Q 3.0 Threading WCF N4A D Q D 4.0 WCF R4A D Q Q 4.0 STFS R/L○○○○-4 WCF L4A D Q Q 4.0 WCF N5A D Q Q 5.0 WCF R5A Q Q Q 5.0 STFS R/L○○○○-5 WCF L5A Q Q Q 5.0 WCF □○B WCF N3B Q Q Q Q D 3.0 Cast iron WCF R3B Q Q Q Q D 3.0 STFS R/L○○○○-3 For light alloys WCF L3B Q Q Q Q D 3.0 WCF N4B Q Q Q Q D 4.0 WCF R4B Q Q Q Q D 4.0 STFS R/L○○○○-4 WCF L4B Q Q Q Q 4.0 Note:With the same chipbreaker shape WCF N5B Q Q Q Q D 5.0 as for general steel (WCF □◯ ), you WCF R5B Q Q Q Q 5.0 STFS R/L○○○○-5 will dispose of fewer cutting edges. WCF L5B Q Q Q Q D 5.0 ■ Recommended Cutting Conditions Cutting speed vc (m/min) Work material Coated carbide Cermet Carbide AC830P AC225 AC1030U T1500A A30 G10E General steel 80 to 200 80 to 200 50 to 200 80 to 200 50 to 120 Q P Steel Soft steel 100 to 230 100 to 230 50 to 230 100 to 230 70 to 150 Q Die steel 60 to 150 60 to 150 50 to 150 60 to 150 50 to 120 Q M Stainless steel 70 to 150 60 to 150 50 to 150 Q 70 to 130 Q K Cast iron Q Q 50 to 200 Q Q 50 to 120 N Non-ferrous metal Q Q 200 to 500 Q Q 200 to 500 feed rate f (mm/rev) Breaker Neutral Left handed or right handed GG GF Without chipbreaker T A B Without chipbreaker CF T A B General purpose Exotic alloy/Low For general steel Small diameter/Low For exotic alloy/ For cast iron/light For general steel Exotic alloy/Low Small diameter/Low For exotic alloy/ For cast iron/light cutting force type cutting force type low feed alloys cutting force type cutting force type low feed alloys Groove 2.0 0.05 to 0.20 0.03 to 0.12 Q 0.03 to 0.10 0.03 to 0.12 Q Q Q 0.03 to 0.10 Q Q width 3.0 0.08 to 0.25 0.04 to 0.15 0.08 to 0.25 Q 0.04 to 0.15 0.05 to 0.15 0.08 to 0.25 0.05 to 0.12 Q 0.04 to 0.15 0.05 to 0.15 w 4.0 0.10 to 0.30 0.05 to 0.18 0.10 to 0.30 Q 0.05 to 0.18 0.05 to 0.18 0.10 to 0.30 0.05 to 0.12 Q 0.05 to 0.18 0.05 to 0.18 (mm) 5.0 0.10 to 0.35 0.05 to 0.20 0.10 to 0.30 Q 0.05 to 0.20 0.06 to 0.20 0.10 to 0.30 Q Q Q 0.06 to 0.20 D mark: Standard stock (expanded product) F49