
GBP 57 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. NEW 27 3832 Positioning within the scale ensures precise coolant transfer. Shank width / 27 3832 27 3833 tmax L4 L1 L Screw 21U 21U groove width w GARANT Master Eco grooving toolholder mm right-hand left-hand mm mm mm mm 20/2 eShop eShop 10 21.5 33.5 92.5 279815 6 (TX25; 6 Nm) 25/2 eShop eShop 10 26.5 33.5 105 279815 6 (TX25; 6 Nm) 20/3 eShop eShop 15 21.5 34.5 93.5 279815 6 (TX25; 6 Nm) 25/3 eShop eShop 15 26.5 43.5 106 279815 6 (TX25; 6 Nm) 20/4 eShop eShop 20 21.5 40.5 99.5 279815 7 (TX30; 8 Nm) 25/4 eShop eShop 20 26.5 50.5 112 279815 7 (TX30; 8 Nm) 20/5 eShop eShop 25 21.5 43.5 102.5 279815 7 (TX30; 8 Nm) 25/5 eShop eShop 25 26.5 50.5 115 279815 7 (TX30; 8 Nm) 20/6 eShop eShop 30 21.5 43.5 109.5 279815 7 (TX30; 8 Nm) 25/6 eShop eShop 30 26.5 50.5 122 279815 7 (TX30; 8 Nm) Grooving toolholder Made of high-tensile tool steel (> 1300 N/mm2). In conjunction with the convex insert clamping, the system achieves very high resistance to axial and radial cutting forces and thereby significantly increases the surface quality and productivity. L L1 t w L4 Groove depth tmax ≤ 12.5×groove width w Size 12/3 – 6.5×w Size 16/3; 20/4; 25/4 – 8×w Size 20/3; 25/3 – 10×w Size 20/3L; 25/3L – 12.5×w (groove depth up to 37.5 mm) 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. Maximum ⌀ = limited workpiece ⌀ due to the tool type. 27 27 3770 Shank width / 27 3770 27 3771 ⌀ Dmax tmax L4 L1 L Screw 21U 21U groove width w Grooving toolholder mm right-hand left-hand mm mm mm mm mm 12/3 eShop eShop 40 20 12 35 125 279815 4 (TX15; 3.5 Nm) 16/3 eShop eShop 50 25 16 41 125 279815 5 (TX25; 6 Nm) 20/3 eShop eShop 60 30 21.5 46 125 279815 6 (TX25; 6 Nm) 20/3L eShop eShop 75 37.5 21.5 54 125 279815 6 (TX25; 6 Nm) 25/3 eShop eShop 60 30 26.5 46 150 279815 6 (TX25; 6 Nm) 25/3L eShop eShop 75 37.5 26.5 54 150 279815 6 (TX25; 6 Nm) 20/4 eShop eShop 65 32.5 21.5 51 125 279815 6 (TX25; 6 Nm) 25/4 eShop eShop 65 32.5 26.5 51 150 279815 6 (TX25; 6 Nm) 877