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HQC Quick-Change Collet Systems for Automatic Lathes

Hardinge HQC Quick-Change collets can be changed from one size to another in less than 20 seconds. The HQC System requires less draw bar force to adequately grip the bar, greatly reducing the breakage of closing fingers and pins common when the bar varies beyond the range of a standard solid collet or master collet with pads. Eliminating the need to change collets due to normal variations in bar stock, greatly reduces the downtime normally required. Since solid collets and master collets are of a one-piece construction, considerable force is required to flex the leaves of a solid collet and bring the gripping surface in contact with the workpiece OD. Because there are no leaves in the HQC system, additional gripping pressure is directly applied to the workpiece. Higher feed rates and higher spindle speeds are possible. Because of the extra gripping force, tool life increases and parts come off the machine quicker. There is no collet shank. Therefore, the collet segments remain parallel to the stock even when there are variations in the stock size. Parallel clamping minimizes stock "push back" and requires less draw bar force to achieve the same gripping capability as conventional collets. The HQC patented operator-replaceable slot-seal system eliminates the need to return the collet to the manufacturer to have the seals changed.

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HQC Quick-Change Collet Systems for Automatics

  • Available for Acme-Gridley, Cone, New Britain and Wickman
  • Call for quote for other brand machines
  • Manual wrench and hydraulic wrench available
  • Collet body, collet head, wrench and spare seals sold separately
  • Round smooth, round serrated, hex, square and special shape collet heads
Document NumberDescriptionFile Size
 2339Quick Change Collet10
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please e-mail us and include the subject: HQC Quick-Change Collet Systems for Automatic Lathes

Jones and Shipman Hardinge Limited
Murrayfield Road
LE3 1UW, England
Tel: +44 (0)116 2013000
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Hardinge is the leader in providing a wide range of highly reliable turning, milling, grinding and workholding solutions under the brands Hardinge, Bridgeport, Kellenberger, Hauser, Tripet and Tschudin. We never compromise on product design, so customers can count on Hardinge to help them make the right part to the required specification, every time.