GBP 57 Groove depth tmax = 7×groove width w ​ Note: From 19.5 mm groove depth (up to groove width 3 mm) and from 24.5 mm groove depth (from groove width 4 mm) the second cutter comes into contact with the workpiece. This can lead to scoring. If necessary, use single-ended grooving inserts No. 273664 – 273786. ​ 27 3764 Shank width / 27 3764 27 3765 tmax L4 L1 L Screw 21U 21U groove width w Grooving toolholder mm right-hand left-hand mm mm mm mm ​ 12/1,5 eShop eShop 10.5 12 28.5 125 279815 4 (TX15; 3.5 Nm) 16/1,5 eShop eShop 10.5 16 30 125 279815 4 (TX15; 3.5 Nm) 20/1,5 eShop eShop 10.5 21.5 30 125 279815 6 (TX25; 6 Nm) 25/1,5 eShop eShop 10.5 26.5 29 150 279815 6 (TX25; 6 Nm) 12/2 eShop eShop 14 12 31.5 125 279815 4 (TX15; 3.5 Nm) 16/2 eShop eShop 14 16 31.5 125 279815 5 (TX25; 6 Nm) 20/2 eShop eShop 14 21.5 33.5 125 279815 6 (TX25; 6 Nm) 25/2 eShop eShop 14 26.5 33.5 150 279815 6 (TX25; 6 Nm) 16/3 eShop eShop 21 16 37 125 279815 5 (TX25; 6 Nm) 20/3 eShop eShop 21 21.5 36.5 125 279815 6 (TX25; 6 Nm) 25/3 eShop eShop 21 26.5 36.5 150 279815 6 (TX25; 6 Nm) 20/4 eShop eShop 28 21.5 48 125 279815 7 (TX30; 8 Nm) 25/4 eShop eShop 28 26.5 48 150 279815 7 (TX30; 8 Nm) Groove depth tmax = 5×groove width w ​ Note: From groove width 6 mm at tmax (5×groove width), the second cutter comes into contact with the workpiece. This can lead to scoring. Reliably free of scoring up to t = 24.5 mm. 27 3752 Shank width / 27 3752 27 3753 tmax L4 L1 L Screw 21U 21U groove width w Grooving toolholder 27 mm 12/1,5 right-hand eShop left-hand eShop mm 7.5 mm 12 mm 26 mm 125 ​ 279815 4 (TX15; 3.5 Nm) 16/1,5 eShop eShop 7.5 16 29 125 279815 4 (TX15; 3.5 Nm) 20/1,5 eShop eShop 7.5 21.5 29.5 125 279815 6 (TX25; 6 Nm) 25/1,5 eShop eShop 7.5 26.5 29 150 279815 6 (TX25; 6 Nm) 12/2 eShop eShop 10 12 30 125 279815 4 (TX15; 3.5 Nm) 16/2 eShop eShop 10 16 30 125 279815 5 (TX25; 6 Nm) 20/2 eShop eShop 10 21.5 33 125 279815 6 (TX25; 6 Nm) 25/2 eShop eShop 10 26.5 33 150 279815 6 (TX25; 6 Nm) 12/3 eShop eShop 15 12 30 125 279815 4 (TX15; 3.5 Nm) 16/3 eShop eShop 15 16 31 125 279815 5 (TX25; 6 Nm) 20/3 eShop eShop 15 21.5 34 125 279815 6 (TX25; 6 Nm) 25/3 eShop eShop 15 26.5 34 150 279815 6 (TX25; 6 Nm) 20/4 eShop eShop 20 21.5 40 125 279815 7 (TX30; 8 Nm) 25/4 eShop eShop 20 26.5 40 150 279815 7 (TX30; 8 Nm) 20/5 eShop eShop 25 21.5 43 125 279815 7 (TX30; 8 Nm) 25/5 eShop eShop 25 26.5 43 150 279815 7 (TX30; 8 Nm) 20/6 eShop eShop 30 21.5 49 125 279815 7 (TX30; 8 Nm) 25/6 eShop eShop 30 26.5 50 150 279815 7 (TX30; 8 Nm) 878