Режущие и зажимные инструменты Hoffmann Group 2026 - страница 69

GBP 57 180º HSS DIN h8 h8 1897 2 118° Stub subland drills for through holes, 180° (for socket-head screws) Very sturdy. Tight concentricity tolerances between drill ⌀ and counterbore ⌀ guarantee exact alignment. 11 7240 – Special surface treatment, resulting in reduced tendency to edge build-up and improved chip evacuation. 11 7240 Application: For through holes for screws to DIN-ISO 273 and countersinking to DIN 74, sheet 2 form H, J and K, medium version. For screws to DIN 912, 6912 and 7984, ISO 1207 (DIN 84). 11 7260 L LC L1 ⌀ D1 ⌀ DS ⌀ D2 Suitable for/ vc [m/min] ISO code N N N P P P P P H H H H H M M S K N ​ ​ ​ ​ ​ 11 7240 45 40 30 25 25 80 ● ● 11 7260 56 50 50 37 31 12 10 31 80 ● ● for screws 11 7240 11 7260 ⌀ D1 h8 ⌀ D2 h8 L1 Lc L ⌀ Ds 11C 11C Stub subland drill HSS < 750 N f 180° vaporised TiAlN mm mm mm mm mm mm mm/rev. M3 eShop eShop 3.4 6 9 28 66 6 0.03 M4 eShop eShop 4.5 8 11 37 79 8 0.03 M5 eShop eShop 5.5 10 13 43 89 10 0.07 M6 eShop eShop 6.6 11 15 47 95 11 0.07 M8 M10 eShop eShop eShop eShop 9 11 15 18 19 23 56 62 111 123 15 18 0.1 0.1 11 180º HSS DIN h9 h8 8376 20- 2 118° 30° Subland drill for through holes, 180° (for socket-head screws) Drill and counterbore each with its own chip flutes and guide chamfers. This means the profile of the stepped drill is retained even after repeated regrinding. Application: For screw through holes to DIN-ISO 273 and screw head counterbores shape H, J, and K. Medium version to DIN 74 sheet 2. 11 7280 h8 DIN 8376 L Ø10 Ø11 LC Example: Hole and counterbore for hexagon socket L1 6 screws M6 DIN 912 and matching subland drill No. 11 7280_M6. ⌀ D1 ⌀ DS Ø6 Ø6,6 ⌀ D2 Suitable for/ vc [m/min] ISO code N N N P P P P P H H H H H M M S K N ​ ​ ​ ​ ​ 11 7280 45 40 30 25 25 80 ● ● for screws 11 7280 ⌀ D1 h9 ⌀ D2 h8 L1 Lc L ⌀ Ds 11C Subland drill HSS < 750 N f 180° vaporised mm mm mm mm mm mm mm/rev. M3 eShop 3.4 6.5 9 63 101 6.5 0.03 M4 eShop 4.5 8 11 75 117 8 0.03 M5 eShop 5.5 10 13 87 133 10 0.07 M6 eShop 6.6 11 15 94 142 11 0.07 M8 eShop 9 15 19 114 169 15 0.1 M10 eShop 11 18 23 130 191 18 0.1 69