Kitagawa SC N Series Instruction Manual
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Kitagawa SC N Series Instruction Manual

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INSTRUCTION MANUAL
SC-(F)N / JN-(T)N
Scroll Chuck for Rotary Table
・ This instruction manual is for production engineers and maintenance
personnel in charge of operation of this product. When a beginner uses
this product, receive instructions from experienced personnel, the
distributor or our company.
・ Before installing, operating or maintaining this equipment, carefully
read this manual and the safety labels attached to the equipment.
Failure to follow these instructions and safety precautions could result
in serious injury, death, or property damage.
・ Store this manual near equipment for future reference.
・ If any questions related to safety arise about this manual, please
confirm them with the distributor or our company.
KITAGAWA IRON WORKS CO., LTD.
77-1 Motomachi, Fuchu, Hiroshima 726-8610 Japan
DANGER
TEL +81-(0)847-40-0526
FAX +81-(0)847-45-8911
Version 1.04 (2011.04.01)
Original instructions
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  • Page 1 ・ Store this manual near equipment for future reference. ・ If any questions related to safety arise about this manual, please confirm them with the distributor or our company. KITAGAWA IRON WORKS CO., LTD. 77-1 Motomachi, Fuchu, Hiroshima 726-8610 Japan TEL +81-(0)847-40-0526...
  • Page 2 Preface This manual provides detailed information about how to safely and correctly use the scroll chuck (SC-N, SC-FN, JN-N, JN-TN type) for a rotary table. Before starting to use this scroll chuck, read this manual carefully and always follow the instructions and warnings in "Important Safety Precautions"...
  • Page 3 The guarantee period of this product is 1 year after delivery. Use the parts delivered by Kitagawa Iron Works for all the parts including consumable parts. We will not assume responsibility for injury, death, damage, or loss caused by usage of parts not manufactured by Kitagawa Iron Works.

  • Page 4: Table Of Contents

    Table of Contents 1. Structural Drawing and Parts List -----------------------------------------------------------------------5 1-1. Type display 1-2. Structural drawing 1-3. Parts list Important Safety Precautions ------------------------------------------------------------8 3. Specifications ----------------------------------------------------------------------------------------------12 3-1. Specifications 3-2. Gripping range 3-3. Relationship between handle torque and gripping force 4. Forming Soft Jaw ------------------------------------------------------------------------------------------17 4-1.
  • Page 5 For Machine Tool Manufacturers (Chapter 9) 9. Attachment -------------------------------------------------------------------------------------------------33 9-1. Outline drawing of attachment 9-2. Manufacturing of back plate 9-3. Attachment of chuck 10. Other Information ----------------------------------------------------------------------------------------38 10-1. About standards and orders 10-2. Information about markings of product 10-3. About disposal...

  • Page 6: Structural Drawing And Parts List

    1. Structural Drawing and Parts List 1-1. Type display Type display as shown below Fig.1 1-2. Structural drawing Fig.2...

  • Page 7: Parts List

    1-3. Parts list Fig.3...
  • Page 8 Table 1 Quantity Name SC-N SC-FN JN-N JN-TN Body Cover Scroll Pinion Base jaw Top jaw Soft jaw Internal jaw External jaw Handle Chuck attaching bolt 3 / 6 Jaw attaching bolt Cover attaching bolt Grease nipple Oil cup Knock pin Hex key Hex key...

  • Page 9: Important Safety Precautions

    Important Safety Precautions Important safety precautions are summarized below. Please read this section before first starting to use this product. Failure to follow the safety precautions below will result in DANGER serious injury or death. Turn off main power supply before attaching, inspecting or replacing chuck, and before adding oil.
  • Page 10 Important Safety Precautions Failure to follow the safety precautions below will result in DANGER serious injury or death. Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out.
  • Page 11 Important Safety Precautions Failure to follow the safety precautions below could WARNING result in serious injury or death. Determine the gripping force required for processing by the machine tool manufacturer or user, and check that the required For All Users gripping force is provided before processing.
  • Page 12 Important Safety Precautions Failure to follow the safety precautions below could WARNING result in serious injury or death. Do not modify the chuck in a way not permitted by the manufacturer. For All Users ・ It may not only break the chuck but the chuck and the work may fly out, which is dangerous.

  • Page 13: Specifications

    3. Specifications 3-1. Specifications Table 2-1 Type SC-3N SC-4N SC-5N 12.0 15.0 Maximum static gripping force (kgf) (918) (1224) (1530) Thru-hole diameter Mass Moment of inertia kg・m 0.001 0.004 0.009 Maximum permissible N・m 29.4 44.1 63.7 handle torque (3.0) (4.5) (6.5) (kgf・m) Balance quality...
  • Page 14 Table 2-3 Type JN07N JN07TN JN09N JN09TN 31.0 31.0 37.0 37.0 Maximum static gripping force (kgf) (3161) (3161) (3773) (3773) Thru-hole diameter Mass 12.2 13.0 21.2 22.0 Moment of inertia kg・m 0.060 0.063 0.160 0.163 Maximum permissible N・m 107.9 107.9 147.0 147.0 handle torque...
  • Page 15 Table 2-5 Type SC-14N SC-16N 40.5 45.0 Maximum static gripping force (kgf) (4130) (4589) Thru-hole diameter Mass 54.0 74.0 Moment of inertia kg・m 0.950 1.725 Maximum permissible N・m 225.6 245.0 handle torque (kgf・m) (23.0) (25.0) Balance quality G6.3 Storing temperature / -20～+50℃...

  • Page 16: Gripping Range

    3-2. Gripping range Table 3 Gripping range Type External gripping Internal gripping Soft jaw Soft jaw SC-3N 2~35 33~55 53~70 2~35 24~44 42~64 SC-4N 3~43 41~69 67~95 3~43 29~57 55~84 SC-5N 3~46 44~77 75~110 3~46 33~67 65~100 SC-5FN 3~46 44~77 75~110 3~46 3-110...

  • Page 17: Relationship Between Handle Torque And Gripping Force

    ・ Tightened at the maximum permissible handle torque. ・ The numerical values are obtained with the Kitagawa gripping force meter . The gripping position of the gripping force meter is at a position 1/2 of the height of the jaw top surface (height from the chuck surface to the top surface of the jaw).

  • Page 18: Forming Soft Jaw

    4. Forming Soft Jaw 4-1. Attachment of soft jaw Use the most appropriate soft jaw considering the shape, dimension, material, and surface roughness of the work and the cutting conditions, etc. ・ Be sure to use the chuck at the above permissible protruding range (Table 4). If exceeded the above range, the engaged part strength between the jaw and scroll becomes insufficient, thus scattering the chuck jaw or work and resulting in danger.
  • Page 19 ・ Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out. Table 5 Bolt size Tightening torque N・m N・m N・m N・m N・m N・m...

  • Page 20: Forming Soft Jaw With Outside Diameter Gripping

    4-2. Forming soft jaw with outside diameter gripping 1. Preparation of the plug for forming ・ Prepare the plug for forming. The surface roughness of the plug outside diameter is to be approximately 25s, and make a shape with sufficient thickness which does not distort. ・...

  • Page 21: Forming Soft Jaw With Inside Diameter Gripping

    4-3. Forming soft jaw with inside diameter gripping 1. Preparation of the ring for forming ・ Prepare the ring for forming. The surface roughness of the ring inside diameter is to be approximately 25s, and make a shape with a sufficient thickness which does not distort. ・...

  • Page 22: Forming Method When You Use Forming Jig

    4-4. Forming method when you use forming jig 1. Preparation of the jig for forming ・ Prepare the jig for forming. (There is a commercially available product.) ・ Attach the pin (Example 1) or the bolt and nut (Example 2) by dividing equally into 3 portions onto the ring shape plate.

  • Page 23: Usage

    5. Usage This product is a device to fix a work-piece when it is processed by the rotary table. The handle closes the jaw manually and fixes a work-piece so that it does not move during processing. The chuck opens the jaw after having processed it and remove a work-piece. ・...

  • Page 24: Precautions Related To Usage Of Jaw

    5-3. Precautions related to usage of jaw ・ If a soft jaw other than one made by Kitagawa Iron Works is used, the engagement will be inferior, and the gripping precision will worsen, and the work will fly out due to gripping failure, which is dangerous.

  • Page 25: Attachment Of Locator And Jig

    5-5. Attachment of locator and jig ・ In the case of attaching the locator and the jig on the chuck body surface, tap or drill a hole in the additional process range specified in Fig. 7. Fig.7...
  • Page 26 Table 6 Type H (Max) ℃ SC-3N SC-4N 11.5 SC-5N 24.25 14.5 SC-5FN 24.25 14.5 JN06N 35.5 JN06TN 35.5 JN07N 17.5 JN07TN 17.5 JN09N 40.5 21.5 JN09TN 40.5 21.5 JN10N JN10TN JN12N 53.5 JN12TN 53.5 SC-14N SC-16N A, B: Additional process impossible dimension. H: Processible depth of tapping or drilling a hole.

  • Page 27: Maintenance And Inspection

    Table 7 Genuine Kitagawa genuine product CHUCK GREASE PRO product (Kitagawa distributor of each country) Kitagawa chuck grease Conventional product Molykote EP Grease TORAY Dow Corning (only inside Japan) Conventional Chuck EEZ grease Kitagawa-Northtech Inc.
  • Page 28 ・ To keep the chuck running in the best condition for a long time, adequate grease lubrication is necessary. Insufficient grease lubrication causes a drop in the gripping force, operation failure at low hydraulic pressure, drop in gripping precision, abnormal wearing, seizing, etc. The work will fly out due to a drop in the gripping force and this is dangerous.

  • Page 29: Disassembling

    6-3. Disassembling Disassembling procedures Read the following disassembling procedures with reference to pages 6-7. 1. Turn off the main power of the machine before starting work. 2. Remove the jaws. 3. Loosen the chuck attaching bolt [11] and remove the chuck from the spindle. 4.
  • Page 30 Table 8-3 Knock pin Tightening Knock pin Chuck model torque M6, M8 N・m 3”～5” N・m 6”～10” N・m 12”～14” N・m 16” ・ Use an eyebolt or a hanging belt when attaching and detaching the chuck to and from the machine, as there is a danger of injury or damage if the chuck drops.

  • Page 31: Malfunction And Countermeasures

    7. Malfunction and Countermeasures 7-1. In the case of malfunction Check the points specified in the table below and take the appropriate countermeasure. Table 9 Defective Cause Countermeasure The chuck The chuck inside will break. Disassemble and replace the broken part. does not The sliding surface is seized.

  • Page 32: Where To Contact In The Case Of Malfunction

    ・ If the chuck failed due to a seizure or breakage, remove the chuck from the machine, following the disassembly steps in page 28. When the chuck cannot be removed due to a blockage of workpiece, do not disassemble forcibly but please contact us or our agent.

  • Page 33: Quality Standard

    8. Quality standard 8-1. Runout accuracy Table 10 Chuck runout (mm) Test bar runout (mm) Type Pinion position SC-3 0.05 0.05 SC-4 (0.05) (0.05) Master SC-5 pinion JN06 0.02 0.02 0.04 0.04 JN07 0.03 0.02 0.02 (Master (0.05) (0.05) (0.05) JN09 pinion JN10...
  • Page 34 For Machine Tool Manufactures Following pages are described for machine tool manufacturers (personnel who attach a chuck to a machine). Please read following instruction carefully when you attach or detach a chuck to machine, and please sufficiently understand and follow the instructions for safe operation.
  • Page 35 9-2. Manufacturing of back plete ・ Process the engagement diameter of the back plate after measuring the actual spindle. ・ Run-out of the back plate directly affects the process precision. The end surface run-out of the back plate, spigot joint diameter run-out must be 0.005 mm or less. ・...
  • Page 36 Table 11 C (js6) Type SC-3N 3-M6 SC-4N 3-M8 SC-5N 3-M8 SC-5FN 3-M8 JN06N 3-M10 JN06TN 3-M10 JN07N 3-M10 JN07TN 3-M10 JN09N 3-M12 JN09TN 3-M12 JN10N 3-M12 JN10TN 3-M12 JN12N 3-M12 JN12TN 3-M12 SC-14N 6-M14 SC-16N 6-M14...
  • Page 37 ・ Use the bolts attached to the chuck, and do not use other bolts. However, if you must use other bolts not provided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be sure they are long enough.
  • Page 38 ・ Use an eyebolt or a hanging belt when attaching and detaching the chuck to and from the machine, as there is a danger of injury or damage if the chuck drops. Chuck size Eyebolt (inch) 9, 10 12, 14 ・...
  • Page 39 10. Other information 10-1. About standards and orders This product is based on the following standards or orders. ・ Machinery directive:2006/42/EC Annex I ・ EN ISO 12100-1:2003+A1:2009 ・ EN ISO12100-2+A1:2009 ・ EN ISO14121-1:2007 ・ EN1550:1997+A1:2008 10-2. Information about markings of product Fig.11 10-3.About disposal Ultimate disposal of this product should be handled according to all national laws and...
  • Page 40 The products herein are controlled under Japanese Foreign Exchange and Foreign Trade Control Act. In the event of importing and/or exporting the products, you are obliged to consult KITAGAWA as well as your government for the related regulation prior to any transaction.

This manual is also suitable for:

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