Kitagawa NPGT Instruction Manual
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Kitagawa NPGT Instruction Manual

Thin 2-jaw parallel gripper
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INSTRUCTION
MODEL NPGT
Thin 2-jaw Parallel Gripper
DANGER
・ This Instruction Manual has been prepared for intended use for
production engineers and maintenance persons who operate this
product. When the beginners use this product, be sure to receive the
guidance from skilled persons, sales agents, or us in advance.
・ Before installing, using, or maintaining this product, read carefully the
safety precautions given in this manual so as to understand them
completely. If you do not heed given instructions or safety
precautions, serious human accidents, death, or physical damage
may occur.
・ Store this manual with care in the specified place at hand, and reread
it as necessary for correct use of the product.
・ Please contact the sales agent if you have any uncertainty or doubt
about this manual.
MANUAL
MA1289YHG1
Version1.01(20200715)

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Summary of Contents for Kitagawa NPGT

  • Page 1 MA1289YHG1 Version1.01(20200715) INSTRUCTION MANUAL MODEL NPGT Thin 2-jaw Parallel Gripper DANGER ・ This Instruction Manual has been prepared for intended use for production engineers and maintenance persons who operate this product. When the beginners use this product, be sure to receive the guidance from skilled persons, sales agents, or us in advance.
  • Page 3 Preface This manual provides detailed information on the thin 2-jaw parallel gripper (model NPGT) so that you can understand its performance and functions and use it safely and correctly. Before using this gripper, read this manual carefully to understand how to use the gripper correctly.
  • Page 4 Kitagawa. Also, the use of parts other than Kitagawa’s genuine parts will void the warranty.

  • Page 5: Table Of Contents

    Contents 1. Structural Drawing and Parts List 1-1. Model indication 1-2. Structural drawing 1-3. Seal list 1-4. Parts list 2. Important Safety Precautions 3. Specifications 3-1. Specification table 3-2. Gripping force 4. Use 5. Design of Jaws 5-1. Designing jaws to be installed on the gripper 6.

  • Page 6: Structural Drawing And Parts List

    1. Structural Drawing and Parts List 1-1. Model indication The model indication is as follows: NPGT 08 S Length measuring Series Size sensor NPGT NBR seal Not equipped Equipped * For the gripper equipped with the length measuring sensor, see also the separately provided instruction manual for it.

  • Page 7: Parts List

    1-4. Parts list NPGT08 Parts name Quantity No. Parts name Quantity 1 Body 200 Plunger fixing bolt 2 Rear cover 201 Cover fixing bolt 3 Plunger L（R） 1（1） 202 Shaft packing 4 Cover 203 Piston packing 5 Master jaw L（R） 1（1）...
  • Page 8 NPGT10 Parts name Quantity No. Parts name Quantity 1 Body 200 Plunger fixing bolt 2 Rear cover 201 Cover fixing bolt 3 Plunger L（R） 1（1） 202 Shaft packing 4 Cover 203 Piston packing 5 Master jaw L（R） 1（1） 204 O-ring 6 Piston 205 Seal washer 7 Pipe...

  • Page 9: Important Safety Precautions

    Important Safety Precautions Important safety precautions that particularly you should know or follow are summarized below. Please read them before starting to use the product. Failure to follow the safety precautions below will result ！ DANGER in death or serious injuries. Be sure to turn off the main power supply when installing, checking, oiling, or replacing the gripper.
  • Page 10 Failure to follow the safety precautions below will result DANGER in death or serious injuries. Do not modify the gripper. ● Not only the gripper is damaged but also the gripper and fixed workpiece may fly out. If using the gripper as a workpiece fixture when the workpiece is drilled, deburred, welded, or modified additionally, confirm the specifications.
  • Page 11 Failure to follow the safety precautions below will result DANGER in death or serious injuries. Use the gripper in accordance with the legal safety standards. ● Use the gripper in accordance with the legal safety standards defined by each country, such as installation safeguards safety covers.
  • Page 12 Failure to follow the safety precautions below will WARNING result in death or serious injuries. Do not operate the machine after drinking alcohol or taking medicine. ● Impaired judgment or operation mistake may cause serious hazards. Medicine Alcohol Do not wear clothing or accessories such as a necktie, necklace, etc. which are easy to be caught in.

  • Page 13: Specifications

    Specifications 3-1. Specification table (Standard gripping force) NPGT Model 08（S） 10（S） Fluid used Air pressure Operating air pressure 0.2～0.8 (MPa) Ambient temperature 5～60 (℃) range Jaw stroke in diameter 16.6 20.8 (mm) Cylinder internal volume 31.5 60.1 (reciprocation) ±0.008 Repeatability...

  • Page 14: Gripping Force

    3-2. Gripping force ① Standard for selecting a model Perform the following calculation and select the model that provides a gripping force exceeding the calculation result, though a gripping force varies depending on the shapes of jaws created by the customer and conveyed workpiece or the friction coefficient.
  • Page 15 ■NPGT08（S） ■NPGT10（S） 1600 1400 1200 1000 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 90 100 110 120 把持点までの距離 L(mm) 把持点までの距離 L(mm) Distance up to grip point L (mm) Distance up to grip point L (mm) ●...

  • Page 16: Use

    ● Do not modify the gripper. Using the modified product could cause unexpected accidents. Kitagawa shall not be held liable for human accidents, death, damage, or loss that occurred due to the modification. ●...

  • Page 17: Design Of Jaws

    Jaw fixing bolt （To be prepared by the customer） （To be prepared by the customer） installation face Positioning bushing Master jaw Master jaw Model φ8 NPGT 08 29.5 13.5 6.75 φ10 NPGT 10 32.5 18.5 9.25 Model Mounting bolt size NPGT 08...

  • Page 18: Installation

    （To be prepared by the and positioning pins are to be prepared by the customer. customer） Positioning pin （To be prepared by the customer） Model NPGT Gripper fixing bolt size Diameter φ5 φ6 (mm) Positioning +0.025 ） pin hole...
  • Page 19 Gripper fixing adapter （To be prepared by the customer） Positioning pin （To be prepared by the customer） Fixing bolt （To be prepared by the customer） Model NPGT Size Gripper fixing bolt Thread depth (mm) Diameter φ6 φ8...

  • Page 20: Installing The Jaws

    （To be prepared by the customer） Positioning bushing Attach positioning bushings with the lead-in part facing the jaw side. Lead-in part Positioning bushing Master jaw Model NPGT Size Mounting Thread Bolt A (mm) depth Diameter φ8 φ10...

  • Page 21: Connecting The Air Piping

    Air purge port Open port Body rear face Model NPGT Port size on body side face Port size on body rear face Air purge port size ● The setscrews in the air pressure supply ports on the body rear face are mounted with adhesive applied to them to prevent air leakage, so it is very difficult to remove them.

  • Page 22: Installing The Switches

    6-4. Installing the switches Use reed switches of the following models. 項目 無接点　2線式 無接点　2線式 Noncontact 2-wire system Noncontact 2-wire system Model 型式 D-M9B D-M9BV Lead wire pull-out shape リード線取出し形状 Straight ストレート L-shaped L字 L-shaped short L字ショート ストレート Straight L-shaped L字 * Using reed switches not shown below may lead to unstable response.
  • Page 23 ② Installing the proximity switch Proximity switch bracket Proximity switch bracket Proximity switch Fixing bolt Fixing bolt Proximity switch ● Installation procedure for the close end side ① Move the master jaws to the close end positions, respectively. ② Install the proximity switch using the proximity switch bracket. ③...

  • Page 24: Maintenance And Checking

    Manufacturer Klueber Lubrication: Whole world Whole Kluberpaste 46 MR 401 world Kitagawa genuine grease (Kitagawa sales CHUCK GREASE PRO agents in each country) ② Supplying method ① Remove the fine pitch setscrew (M6 x 6 P = 0.75) on the side face of the body.
  • Page 25 ③ Safety information on grease and antitrust oil Applicable range ・ Specified grease ・ Antirust agent applied to the product at the delivery First-aid treatment ・ Aspiration: In case of much aspiration, go to a place where there is fresh air, and cover your body with a blanket to keep your body warm.
  • Page 26 7-4. Disassembly Disassembly procedure By referring to the parts list on page 5, disassemble the product through the procedure below: ① Stop the air pressure supplied to the gripper and disconnect the air piping. ② Remove the gripper from the robot or the loader. ③...

  • Page 27: Troubleshooting

    Troubleshooting 8-1. Problems and countermeasures Check the following, and take corrective actions. Symptom Cause Corrective actions Gripper internal part is broken. Replace the gripper with a new one. Disassemble, and correct the seized part with an oilstone, Slideways get seized. or replace the gripper with a new one.

  • Page 28: Others

    9. Others 9-1. Standards and directives to which the gripper conforms This product conforms to the following standards and directives: ・ Machinery Directive:2006/42/EC Annex I ・ EN ISO 12100-1:2003+A1:2009 ・ EN ISO 12100-2:2003+A2:2009 9-2. Disposal of gripper Dispose of this unit in accordance with the laws and regulations of your country.

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