74 SMW-AUTOBLOK 466 SMW-AUTOBLOK 468 SMW-AUTOBLOK 327 200 2000 1000 100 80 60 40 20 0 120 140 160 180 3000 4000 4500 400 260 315 FG F NTL-D 260 NTL-M 260 NTL-D 315 NTL-M 315 NTL-D 400 NTL-M 400 3 3 3 9 11 12 22.3 27.3 30 68 80 100 125 145 180 4400 3700 3000 44 69 114 0.35 0.85 2.15 SIN-S 125 / 150 SIN-S 125 / 150 SIN-S 150 / 175 77184626 77184631 77184640 77184726 77184731 77184740 NTL-D NTL-M INCH SERRATION High precision power chuck Ø 260 - 400 mm METRIC SERRATION Application/customer benefits • For mid to large batch production • Fully sealed, ideal for dry machining of castings and forgings or if high pressure coolant is used • Safe clamping due to centrifugal force compensation, for high speed machining and for fragile parts NTL-D: Master jaws with INCH SERRATION (1/16” x 90°, 3/32“ x 90°) NTL-M: Master jaws with METRIC SERRATION (1.5 mm x 60°) (suitable for japanese chuck top jaws) Technical features • EXTRA long jaw stroke • Centrifugal force compensation via counterweights • Constant gripping force with permanent grease lubrication • Center bore for coolant and / or air • Chuck body and internal parts case hardened • proofline® chucks = fully sealed - low maintenance Standard equipment Ordering example 3-jaw chuck 3-jaw chuck NTL-D 260 / A6 1 set T-nuts and bolts or 1 set soft top jaws 3-jaw chuck NTL-M 260 / Z220 Actual gripping force diagram Technical data Speed (r.p.m.) FG Gripping force (total on 3 jaws) (kN) Safety advice / danger of damage: When using taller / heavier jaws and / or clamping on a bigger diameter reduce draw pull / rotating speed accordingly. The data in the diagram refer to 3-jaw chucks, newly maintained according to their service manuals using SMW-AUTOBLOK K67 grease. The static and dynamic gripping forces have been measured using standard soft top jaws, placed in a position not exceeding the outer diameter of the chuck. SMW-AUTOBLOK Type Number of jaws Radial jaw stroke mm Axial piston stroke mm Max. draw pull* kN Max. gripping force* kN Max. speed r.p.m. Weight (without top jaws) kg Moment of inertia kg·m2 Recommended actuating cylinders Type Id. No. NTL-D (Center mounting) Id. No NTL-M (Center mounting) ■ Centrifugal force compensation ■ Closed center - 3 jaws ■ Long stroke ■ proofline® chucks = fully sealed - low maintenance * For internal clamping reduce the draw pull by 30%. fully sealed – low maintenance proo ine® series on request: Tooling Standard Parts Catalog BIS Specials Website: www.bisspecials.com Email: info@bisspecials.com Tel: (0031) 0313 482566 Website: www.bisspecials.com Email: info@bisspecials.com Tel: (0031) 0313 482566
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