IC830 IC8250 IC808 IC8250IC20 GROOVE-TURN LH GHMUR/L HF H External Holders for OAL 45° Undercutting 1.5 WF 45° B CWX Right-hand shown Designation CWX(1) H HF B OAL LH WF GHMUR/L 16 4.80 16.0 16.0 16.0 112.00 25.0 19.00 SR M6X16 DIN912 HW 5.0 GHMUR/L 20 6.40 20.0 20.0 20.0 122.00 25.0 23.00 SR M6X16 DIN912 HW 5.0 GHMUR/L 25 6.40 25.0 25.0 25.0 137.00 25.0 28.00 SR M6X16 DIN912 HW 5.0 • For D>100 mm, GIP/GIF inserts can be used (clearance types UN, D or G are not required). (1) Maximum cutting width For inserts, see pages: GIMY-UN (303) • GIP-UN (303) ±0.025 GIMY-UN Utility Single-Ended Inserts 7° for External Undercutting 15 Ref. CW RE BW Dimensions RecommendedMachining Data f groove Designation CW RE CWTOL(1) RETOL(2) BW CDX(3) (mm/rev) GIMY 315-UN 3.00 1.50 0.05 0.050 2.40 2.00 • 0.05-0.15 GIMY 420-UN 4.00 2.00 0.05 0.050 3.20 2.50 • 0.05-0.15 • For 45° undercutting on D 100 mm, regular GIMY inserts may be used. • For cutting speed recommendations and user guide, see pages 419-428, 432-436 (1) Cutting width tolerance (+/-) (2) Corner radius tolerance (+/-) (3) Cutting depth maximum For tools, see pages: GHMUR/L (303) ±0.025 GIP-UN Precision Double-Ended Inserts 7° for External Undercutting 15.3 Ref. 5 CW RE Dimensions Tough 1  Hard RecommendedMachining Data f groove Designation CW RE CWTOL(1) RETOL(2) DMIN BW CDX(3) (mm/rev) GIP 3.00-1.50UN 3.00 1.50 0.05 0.050 35.00 2.40 4.00 • • • • 0.05-0.15 GIP 4.00-2.0UN 4.00 2.00 0.05 0.050 35.00 3.20 4.00 • • 0.05-0.15 • Not recommended for turning. • For undercutting at 45° and D100 mm, other GIP inserts apply as well • For cutting speed recommendations and user guide, see pages 419-428, 432-436 (1) Cutting width tolerance (+/-) (2) Corner radius tolerance (+/-) (3) Cutting depth maximum For tools, see pages: C#-GHDR/L (274) • CGHN-DG (283) • CGPAD (281) • CGPAD-JHP (282) • GHDR/L (short pocket) (275) • GHDR/L-JHP (short pocket) (276) • GHDR/L-JHP-MC (short pocket) (277) • GHMPR/L (273) • GHMR/L (273) • GHMUR/L (303) 303