KV3

KV3

KV3

Product catalog summary
Overview: The document provides technical specifications and features of the KV 3 three-jaw wedge bar chuck with a closed center, designed for high-performance lathes. It highlights the chuck's high clamping force, precision, and suitability for both roughing and finishing operations at high speeds.
Design Features: The KV chucks are engineered for high-speed, high-capacity lathes, offering high clamping force and precision. The design minimizes mass exposed to centrifugal force, eliminating the need for centrifugal force compensation mechanisms. This design prevents clamping force hysteresis, making the chucks suitable for both heavy-duty and precise machining.
Specifications: The document lists various models of the KV 3 chuck, detailing dimensions, maximum operating force, rotational speed, mass, and moment of inertia. For example, the KV 3/200 A model has a maximum operating force of 40 kN, a maximum rotational speed of 6300 min-1, and a mass of 16 kg.
Ordering and Accessories: An example order includes the power-operated chuck KV 3/200 A, hard top jaws HB 237, and soft top jaws WB 237. The delivery scope includes fixing screws, a hand lever grease gun, and a grease cartridge. Accessories available include various types of jaws and chuck flanges.
Technical Data: The document provides a table with detailed technical data for different KV 3 models, including dimensions and performance metrics. It also notes that modifications are reserved.
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Catalog excerpts

KV3-1

Dreibacken-Keilstangenfutter ohne Stangendurchlass Three jaw wedge bar chuck with closed center Design features BERG-Kraftspannfutter der Bauart KV sind für Hochleistungsdrehmaschinen ausgelegt. Sie zeichnen sich durch hohe Spannkraft und Spanngenauigkeit, sowie durch hohe Maximaldrehzahl und geringe Bauhöhe aus. BERG power operated chucks type KV are designed for high speed, high capacity lathes. They stand out for their high clamping force and precision, as well as high maximum rotational speed and low construction height. Ein Futterkolben treibt Keilstangen an, von denen jeweils zwei einer Grundbacke zugeordnet sind und diese in Spannrichtung bewegen. Die konsequente Reduktion aller Massen, die der Fliehkraft ausgesetzt sind sowie der hervorragende Wirkungsgrad des Spanngetriebes, machen die sonst bei Hochleistungsfuttern notwendigen fliehkraftkompensierenden Getriebeteile überflüssig. Gleichzeitig ist damit die Spannkrafthysterese, d.h. die für verformungsempfindliche Werkstücke schädliche Spannkraftüberhöhung nach Spindelstillstand ausgeschlossen. KV-Kraftspannfutter sind daher so wohl für die schwere Schruppzerspanung mit hohen Spannkräften, als auch für die genaue Feinbearbeitung bei hohen Drehzahlen geeignet. A chuck piston drives the wedge bars, of which two are assigned to one base jaw, moving them in the clamping direction. The consistent reduction of all mass exposed to the centrifugal force, as well as the high efficiency of the clamping drive make centrifugal force compensation mechanism, otherwise required by high speed chucks, unnecessary. At the same time, the development of clamping force hysterisis is prevented, i.e. an excess in clamping force when the spindle comes to a standstill which negatively affects workpieces sensitive to deformation. This makes KV power operated chucks suitable for both chip removal by roughing under high clamping forces and precise finishing at high rotational speeds. KV 3-Kraftspannfutter ähnlich DIN 6353 sind mit Spitzverzahnung in Ausführung A erhältlich und mit Kreuzversatz in Ausführung B. KV 3-power operated chucks similar to DIN 6353 are available with serrated jaws and version A, as well as with tenon jaws and version B.

 Open the catalog to page 1
KV3-2

Abbreviations Betätigungskraft Spannkraft pro Backe bei n = 0 Summenspannkraft des Futters bei n = 0 Spannabstand Futterkonstante Höchstdrehzahl Masse Trägheitsmoment Operating force Clamping force per jaw at n = 0 Total clamping force of the chuck at n = 0 Clamping distance Chuck constant Maximum rotational speed Mass Moment of inertia Ordering example Kraftspannfutter KV 3/200 A Harte Aufsatzbacken HB 237 Weiche Aufsatzbacken WB 237 Power operated chuck KV 3/200 A Hard top jaws HB 237 Soft top jaws WB 237 Delivery scope Kraftspannfutter KV nach Datenblatt einschließlich Futterbefestigungsschrauben,...

 Open the catalog to page 2
KV3-3

Dreibacken-Keilstangenfutter ohne Stangendurchlass Three jaw wedge bar chuck with closed center Maße | Dimensions TYP | TYPE hmax hmin Technische Daten | Technical data TYP | TYPE Änderungen vorbehalten | For modifications all rights reserved

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All Berg & Co. GmbH Spanntechnik catalogs and technical brochures

  1. KHNC-Z

    3  Pages

  2. SG

    3  Pages

  3. HK / HKR

    2  Pages

  4. OVR

    4  Pages

  5. EHHF / HHHF

    2  Pages

  6. EP&S3

    2  Pages

  7. Hydrodock

    2  Pages

  8. M - SPH

    2  Pages

  9. NSM-HV

    2  Pages

  10. SPH

    4  Pages

  11. SHR

    4  Pages

  12. HDZ

    2  Pages

  13. Spring Stacks

    2  Pages

  14. SSK

    5  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.