
GBP 57 Grooving toolholder for triangular grooving inserts Grooving toolholder 0° for external radial grooving Note: For right-hand toolholders use right-hand inserts, for left-hand toolholders use left-hand inserts. Shank size 27 3910 27 3911 L4 L1 L Insert screw 21W 21W Grooving toolholder 27 3910 mm right-hand left-hand mm mm mm L 12 eShop eShop 16.2 21.4 100 279815 13 L1 16 eShop eShop 20.2 21.4 125 279815 13 20 eShop eShop 25.2 21.4 125 279815 13 25 eShop eShop 30.2 21.4 150 279815 13 L4 Grooving toolholder for internal radial grooving Note: For right-hand toolholders use left-hand inserts, for left-hand toolholders use right-hand inserts. Shank ⌀ DS 27 3914 27 3915 ⌀ Dmin L3 L2 L Insert screw 21W 21W 27 3914 Boring Bar L mm right-hand left-hand mm mm mm mm 25 eShop eShop 30.5 17.5 11.5 250 279815 13 ⌀ DS L2 L3 32 eShop eShop 40 23 15 250 279815 13 DIN DIN 471 472 Triangular grooving inserts Grooving inserts for retaining ring profile grooves, external and internal tmax R w Slot width m (H13) 27 3900 27 3902 27 3906 27 3908 w tmax Corner radius R for circlips to DIN 21J 21J 21J 21J 471 / 472 ring thickness Grooving insert right-hand right-hand left-hand left-hand mm HU9315 HB9635 HU9315 HB9635 mm mm mm mm 0,5 eShop eShop eShop eShop 10 0.525 1.2 0.05 0.4 27 0,7 0,8 eShop eShop eShop eShop eShop eShop eShop eShop 10 10 0.75 0.85 1.2 1.2 0.05 0.05 0.6 0.7 0,9 eShop eShop eShop eShop 10 0.95 2 0.05 0.8 1,0 eShop eShop eShop eShop 10 1 2 0.05 – 1,1 eShop eShop eShop eShop 10 1.1 2 0.05 1 1,3 eShop eShop eShop eShop 10 1.3 2 0.2 1.2 1,5 eShop eShop eShop eShop 10 1.5 2.5 0.2 – 1,6 eShop eShop eShop eShop 10 1.6 2.5 0.2 1.5 1,85 eShop eShop eShop eShop 10 1.85 2.5 0.2 1.75 2,0 eShop eShop eShop eShop 10 2 2.5 0.2 – 2,15 eShop eShop eShop eShop 10 2.15 2.5 0.2 2 2,5 eShop eShop eShop eShop 10 2.5 2.5 0.2 – 2,65 eShop eShop eShop eShop 10 2.65 2.5 0.2 2.5 3,0 eShop eShop eShop eShop 10 3 2.5 0.2 – N P N P – M – M vc main application mm/min 70 – 280 110 – 170 70 – 280 110 – 170 vc secondary application mm/min – 90 – 140 – 90 – 140 892