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Super Precision Drill ChucksNPUMaximized rigidity <strong>and</strong> precision• Precision <strong>and</strong> rigidity as the connection to the machine <strong>and</strong>the <strong>drill</strong> chuck form a compact union of maximun stability.AVANTAGES :ABCKCOMPACT CONSTRUCTION• Drill chuck model SPX-13 with DIN-69871 ISO 40 shankis 67 mm. longer than <strong>drill</strong> chuck NPU-13 with the sameshank.MAXIMUM UNION RIGIDITY• The union with a short morse taper is the best due to itsridigity <strong>and</strong> precision .RETENSION SCREW• Guarantees a perfect union between the internal arbortaper <strong>and</strong> the external arbor taper.HIGHER PRECISION• The eccentricity is controlled by the single taper connectionto the machine <strong>and</strong> no intermediate arbor is needed aswith the st<strong>and</strong>ard <strong>drill</strong> chuck.ADVANTAGES OF SUPPLEMENTARY TIGHTENING BYWRENCH :• Increases gripping torque up to three times higher thanh<strong>and</strong> tightening.9
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