362 SMW-AUTOBLOK 363 SMW-AUTOBLOK 360 BB-SC 600-275 BB-SC 850-395 BB-SC 1020-565 053540 053350 053570 275 (10.83“) 395 (15.55“) 565 (22.24“) 25.4 (1“) 27 (1.06“) 27 (1.06“) 16.9 (0.67“) 15 (0.59“) 15 (0.59“) 8.5 (0.33“) 12 (0.47“) 12 (0.47“) 5 (73) 5 (73) 5 (73) 50 (11240) 100 (22480) 150 (33721) 57 (12814) 113 (25403) 170 (38218) 57 (12814) 113 (25403) 170 (38218) 1000 700 420 60 115 139 510 (1124) 930 (2050) 1260 (2779) 34 101 223 BIG BORE® BB-SC INCH SERRATION Front-end spring clamp power chuck EXTRA large through-hole Ø 275 - 565 mm Application/customer benefits • End machining of long pipes / self centering clamping • Long jaw stroke to clear upset piping • Highest productivity / open and clamp time < 3 sec. • Low maintenance = high availability of the machine • Step mode for partial opening / clamping for shimming possible • Full spindle bore can be used Technical features • Self centering clamping with either 9 / 6 / 3 spring packs • Encapsulated spring packs • Opening via integrated cylinder • Permanently grease lubricated for constant grip force • Long jaw stroke with rapid and clamping stroke • Low air consumption • Stroke control • proofline® chucks = fully sealed - low maintenance Standard equipment Ordering example Chuck with mounting bolts Big Bore SC 850-395 1 set of soft top jaws Id. No. 053350 1 set of T-nuts and bolts Accessories Air control AC-SC Picture 1 Chuck open (only at stopped spindle). The SMW profile seal collapses radial under the air pressure and seals against the chuck body. The cylinder chamber is filled. The piston is compressing the springs, the jaws open. Technical data Picture 2 Chuck clamped. The SMW profile seal lifts off the chuck body due to elastic force. The springs expand and transmit their force onto the jaws via the wedge hook drive. The spindle can rotate. Picture 3 Stroke control. The position of the jaws can be monitored via a mechanical cam by 1 or 2 proximity switches. The reliable principle: Clamping via encapsulated spring packs / opening via air cylinder End machining of tubes with front and rear chucks Rapid stroke / jaw Clamping stroke / jaw Slow motion Fast motion SMW-AUTOBLOK Type Id. No. Through-hole mm (inch) Total stroke per jaw mm (inch) Rapid stroke per jaw* mm (inch) Clamping stroke per jaw mm (inch) Operating pressure at 9 springs bar (psi) Max. gripping force at 3 / 6 / 9 springs kN (lbf) Max. speed r.p.m. Air consumption to open at 5 bar (73 psi) liter Weight (without jaws) kg (lbs) Moment of inertia kg·m2 Extra long jaw stroke * May not be used for clamping. ■ Chuck size 600 - 1020 ■ Clamping with spring packs ■ Rapid and clamping stroke fully sealed – low maintenance proo ine® series 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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