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BIG BORE® BB-N

BIG BORE® BB-N
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INCH serration Front-end pneumatic power chucks EXTRA LARGE THROUGH HOLE 0 140 - 410 mm ■ chuck size 400 - 800 ■ standard jaw stroke ■ 3 jaws Application/customer benefits • End machining of long pipe • Full spindle bore can be used Technical features • Air chuck for external/internal clamping with built-in pneumatic cylinder • Air feed via distributor ring and SMW-profile seals, at stopped spindle • Built in non-return valves maintain the air pressure during machining • Clamping pressure level constantly checked by a safety control system (only for external clamping) • Jaw stroke control for OD and ID Gripping (not BB-N 400-140) Standard equipment Ordering example 2 elbow unions G 1/2" 12 mounting bolts (9 for the BB-N 400) Accessories 1 lifting eye bolt Control unit AC-BB/AC-XN 1 set T-nuts with bolts (see general catalog pages 308-311) 1 set soft top jaws without distributor ring bracket The principle invented by SMW: air supply via distributor ring and SMW-profile seal rings Open/close movement (only possible at The SMW-profile seals lift to the expanded stopped spindle). The profile seals deform position, not touching the chuck body radially under the pneumatic pressure, anymore. sealing on the chuck body and filling the The clamping pressure is maintained by the cylinder chamber. twin non-return valve. When the clamping pressure is reached, the The chuck can start to rotate air feed is stopped, closing the twin nonreturn valve. Technical data

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BIG BORE® BB-N INCH serration SMW-AUTOBLOK BB-N Type Fixing bolts circle Pneumatic connection Serration Bolt ISO 4762 12.9 min. T-nuts distance min./max. Serration length min./max. (Pressure control)

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BIG BORE® BB-N INCH serration GUB Hard reversible top jaws Gripping ranges Jaw type Id. No./set B H L T N Serration a b c kg/set A1 A2 A3 J1 J2 S Gripping ranges Jaw type Id. No./set B H L N Serration a b c kg/set WBSA-D / WBC-D Soft top jaws Gripping ranges Jaw type Id. No./pc. B H L N Serration a b c kg/piece A1 S

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Spindle-Adapters for BIG BORE chucks ISO-A DIN 55026 Spindle-Adapters Spindle nose Id. No. A B C Bayonet and camlock spindle adapters are available on request

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