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INSTRUCTION
MODEL NPG3
3-jaw Shield 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
MA1381YHG2
Version1.02(20221226)
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Summary of Contents for Kitagawa NPG3
- Page 1 MA1381YHG2 Version1.02(20221226) INSTRUCTION MANUAL MODEL NPG3 3-jaw Shield 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 3-jaw shield gripper (model NPG3) 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.
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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: NPG3 10 Series Size NPG3 NBR Seal 1-2. Structural drawing Cover Seal Cover Plunger Master jaw Body Piston Rear cover 1-3. Seal list 型式 NPG310... -
Page 7: Parts List
１-４．Parts List NPG310 部品名称 個数 部品名称 個数 Body 202 Cover fixing bolt Rear cover 203 Rear cover fixing bolt Master jaw 204 Set screw Plunger 205 Spring pin 206 O-ring Ａ Piston 207 O-ring Ｂ Cover Cover seal 208 Jaw packing Positioning bushing 209 Piston packing 210 Seal washer... -
Page 8: 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 9 Failure to follow the safety precautions below will result DANGER in death or serious injuries. Do not modify the gripper. ● only the gripper damaged also 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 10 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 11 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.
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Page 12: Specifications
Specifications 3-1. Specification table Model Fluid used Air pressure Operating air pressure 0.2～0.8 (MPa) Ambient temperature 5～60 (℃) range Jaw stroke in diameter (mm) Cylinder internal volume 139.7 (reciprocation) ±0.01 Repeatability (mm) Body Mass (kg) Ambient humidity range 30～95 Storage temperature 5～60 (℃) range... -
Page 13: 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 14 ■NPG310 ● Determine the distance up to a grip point L as short as possible when designing the jaws. Also, the distance up to a grip point L should be used within a range shown in graph. If it is used out of the range, not only the specified gripping force may not be obtained but also the wear of sliding parts may be increased.
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Page 15: 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 16: Design Of Jaws
5. Design of Jaws 5-1. Designing jaws to be installed on the gripper When designing jaws to be installed on the gripper, form the installation face to the master jaw as shown below. 型式 NPG310 φ 33.5 φ 8 22.5 22.5 45.6 56.7... -
Page 17: Installation
Installation 6-1. Installing the gripper ① Front face installation Gripper fixing bolt Install the gripper body using （To be prepared by the three fixing bolt holes and two customer） positioning pin holes. The gripper fixing adapter, gripper Gripper fixing adapter fixing bolts, and positioning pins （To be prepared by the are to be prepared by the... - Page 18 Model Size Gripper Thread fixing bolt (mm) 14(20.6) depth Diameter φ 6 (mm) Positioning ） +0.025 pin hole Depth (mm) 12(18.6) * Dimensions in ( ) indicate the depth from the mounting surface. ③ Center surface installation Install the gripper body using the six fixing bolt holes and two positioning pin holes.
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Page 19: Installing The Jaws
6-2. Installing the jaws Install the jaws using four mounting bolt holes, spigot joint and positioning bushing holes. The jaws, jaw fixing bolts, and positioning bushings are to be prepared by the customer. Model Size Mounting Thread bolt A (mm) depth Diameter φ... -
Page 20: Connecting The Air Piping
6-3. Connecting the air piping The air pressure supply ports to open and close the gripper jaws are provided on the side face and rear face of the body. When using the supply port on the side face of the body, connect the air piping directly. -
Page 21: 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 22: Maintenance And Checking
Maintenance and Inspection 7-1. Periodic inspection ・ Before work or when resupplying grease, move the jaws to full stroke position to check that the stroke mentioned in the specification table is obtained. ・ At the end of work, be sure to clean the gripper main body using an air gun or the like. - Page 23 ③ Grease resupplying method ・ Remove jaws from master jaw (No.3) ・ Confirm that the residual pressure is released or remove the seal cap bolt (No.211) in the closed state. ● Grease will dangerously spray off by air pressure if the seal cap bolt (No.211) is removed in the open state without releasing the residual pressure Seal cap bolt (No.211)
- Page 24 ④ 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 25 7-4. Disassembly Disassembly procedure By referring to the parts list on page 5 and 6, 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 26 Oil treatment used Be sure to use the specified oil treatment shown below. Brand Manufacturer S-10 Oil treatment Napolex: Japan ● Be sure to tighten the bolts with the specified torque. Lack or tightening torque or excessive torque could break the bolts, causing the conveyed workpiece to fly out.
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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, The sliding surface is 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 12100:2010 9-2. Disposal of gripper Dispose of this unit in accordance with the laws and regulations of your country. - Page 29 EN ISO 12100:2010 Signature : See original declaration Place / Date : See original declaration Name / Title : Tomonari Hiromoto / Manager, Technical section 1 Technical department Kitagawa Global hand Company Being the responsible person appointed and employed the manufacturer.
- Page 30 EN ISO 12100:2010, EN 1550:1997+A1: 2008 Signature : See original declaration Place / Date : See original declaration Name / Title : Tomonari Hiromoto / Manager, Technical section 1 Technical department Kitagawa Global hand Company Being the responsible person appointed and employed the manufacturer.
- Page 31 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.
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