Page 8 - MILLING_CATALOG_INCH_2022_P593-P866
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INTRODUCTION
      TOOLING SYSTEMS

         Power Chucks


              When using this tool, only a small tightening
              torque compresses the frontal nose, providing an                 3  2  1
              extremely high gripping force. It is designed for
              roughing and finishing applications in milling where
              high torque transmission, maximum accuracy,
              compactness and easy operation are required.
              Features                                             10
            •  The clamping nut is not threaded (as in ER collet chucks)
            •  Designed for direct chucking of the tool shank –
              no need for intermediate collet for maximum gripping force
            •  Sealed nut construction
            •  No axial drawback of the tool shank                 11  9    8     5 4       6   7
              as the chuck is tightened
            •  Thick wall construction to withstand greater side    1  Shallow tapered front end cone
              loading forces
                                                              2  Clamping nut
              The high gripping force achieved by the MAXIN POWER   3  Helical slot
                                                     (1)
              CHUCK results from the shallow nose tapered cone   with
                      (3)
              helical slot   inside the internal chuck bore. It exerts a very   4  Needle bearing cage
                                              (2)
              high clamping force when the clamping nut   is rotated   5  Front seal
              in the axial direction.The shallow taper of the tool nose     6  Ventilation bore (thread M4)
                                                       (1)
              and the angled position of the needle bearing   that sit in
                                                (4)
              the cage create the axial movement of the clamping nut  .   7  Preset screw thread
                                                        (2)
              This unique clamping mechanism eliminates       8  Cap screw (for the preset screw)
              axial movement of the shank while clamping,     9  Preset screw
              simplifying the preset process.
                                                              10 Ground bore
              Runout Accuracy                                 11 Grip groove (for collet release)
              Maximum runout at 3XD overhang is less .0004”
                                          3xD
                                                   .0004

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