SERIES 12J1G 0 DEGREE LEAD END MILL Shoulder Channel Corkscrew Pocket Facing Coolant L2 L1 L3 D1 D2 .63 L1 L3 L2 D2 D1 Extension Projection Overall Shank Number Ramp Coolant Cutter Number Nom. Dia. Length Length Length Size/Style of Inserts Angle Thru 12J1G-0701284R01 0.750 1.75 1.25 3.75 .750" Weldon 1 11 No 12J1G-1001580R01 1.000 1.75 1.50 4.00 1.000" Weldon 2 5.8 No 12J1G-1001580R02 1.000 1.75 1.50 4.00 1.000" Weldon 2 5.8 Yes 12J1G-1003780R01 1.000 3.75 3.50 6.00 1.000" Weldon 2 5.8 No 12J1G-1006080R01 1.000 6.00 5.75 8.00 1.000" Weldon 2 Not Recomm. No 12J1G-1008080R01 1.000 8.00 7.75 10.00 1.000" Weldon 2 Not Recomm. No 12J1G-1201681R01 1.250 2.25 1.60 4.50 1.250" Weldon 3 3.5 No 12J1G-1201681R02 1.250 2.25 1.60 4.50 1.250" Weldon 3 3.5 Yes 12J1G-1204281R01 1.250 4.25 3.75 6.50 1.250" Weldon 3 3.5 No 12J1G-1205281R01 1.250 5.75 5.25 8.00 1.250" Weldon 3 Not Recomm. No 12J1G-1207281R01 1.250 7.75 7.25 10.00 1.250" Weldon 3 Not Recomm. No 12J1G-1501681R03 1.500 2.25 2.25 4.50 1.250" Weldon 4 2.3 Yes 12J1G-1501681R04 1.500 2.25 2.25 4.50 1.250" Weldon 3 2.3 Yes 12J1G-1501681R01 1.500 2.25 2.25 4.50 1.250" Weldon 4 2.3 No 12J1G-1501681R02 1.500 2.25 2.25 4.50 1.250" Weldon 3 2.3 No 12J1G-1501881R01 1.500 4.25 4.25 6.50 1.250" Weldon 3 2.3 No 12J1G-1505586R01 1.500 5.50 5.50 8.00 1.500" Weldon 3 Not Recomm. No 12J1G-1501881R02 1.500 5.75 5.75 8.00 1.250" Weldon 3 Not Recomm. No 12J1G-1507586R01 1.500 7.50 7.50 10.00 1.500" Weldon 3 Not Recomm. No 12J1G-1701781R01 1.750 2.25 2.25 4.50 1.250" Weldon 4 1.8 No 12J1G-2001781R01 2.000 2.25 2.25 4.50 1.250" Weldon 5 1.6 No Relieve cutter body for insert radii larger than 0.125" R Operating guidelines on 346. 34