User`s Manual
Contents
1. JA JH Series Rotary Power Chuck User s Manual First Edition July 2007 JA JH Series Rotary Power Chuck User s Manual Copyright Notice Copyright 2007 JATO Precision Industries Incorporated All rights reserved Reproduction in any form or by any means without JATO s prior written permission is prohibited Table of Contents Chapter 1 Introduction sesse ese ee Ke AR nenea RE anna anna RE AR nana AR RR Ge ER KEES 1 1 ERA RE OE EE EE 1 1 1 2 Product Features 1 3 1 3 Package Checklist iii se 1 3 1 4 Chuck Maintenance and Safety Notifications 1 4 1 5 Chuck Installation isinsin naana Ge RA aaa ana 1 6 1 6 Ordering of Harden Jaws nn 1 8 1 7 Ordering of Blank JAWS nn 1 9 Appendix A Dimensions and Specifications ss sseeeesseeennennnnzani A 1 Appendix B Troubleshooting ss sse ER RR RE RE ER RR RE RE ER ea RE RE EER ea RE EE Ee aaa B 1 1 1 Chapter 1 Introduction Welcome to JATO JA JH Series Rotary Power Chuck This chapter covers the following topics Overview Product Features Package Checklist Chuck Maintenance and Safety Notifications Chuck Installation Ordering of Harden Jaws Ordering of Blank Jaws Overview JATO Rotary Power Chuck has a built in air hvdraulic cylinder giving you a real hassle free and front mounting solution for your applications You can use JATO Rotary Power Chuck to set up your chucking system in no time and start various kin2. 010mm 2 Install the Jaws onto the Jig 3 Machine the I D of the jaws according to the dimensions of your workpiece 4 Heat treating the jaws to harden them 5 Install the Jaws onto the Jig Fine finish the I D of the jaws grinding lapping or fine turn machining 1 9 JA JH Series Rotary Power Chuck Appendix A Dimensions and Specifications Dimensions lt a Model JA7 70 JA7 40 JA5 25 JH9 120 JH7 70 JH7 40 JH5 25 Air 192mm 192mm 135mm 7 56 E i 7 56 5 31 155mm 155mm 100mm 6 10 A 6 10 3 94 68mm 45mm 26mm 2 68 a l 1 77 1 02 5mm 5mm 4mm A 1 JA JH Series Rotary Power Chuck Dimensions and Specifications 0 20 0 20 0 16 0 24 0 20 0 20 0 16 142mm 128mm 105mm 160mm 142mm 128mm 105mm 5 60 5 04 4 13 6 30 5 60 5 04 4 13 105mm 65mm 45mm 140mm 105mm 65mm 45mm 4 13 2 56 1 77 5 51 4 13 2 56 1 77 168mm 94mm 68mm 168mm 136mm 94mm 68mm 6 61 3 70 2 68 6 61 5 35 3 70 2 68 266mm 212mm 170mm 275mm 21imm 192mm 138mm 10 47 8 35 6 69 10 83 8 31 7 56 5 43 172mm 115mm 210mm 172mm 172mm 115mm 6 77 4 53 8 27 6 77 6 77 4 53 M10x M8x M12 x M10x M10x M8x P1 5 P1 25 P1 5 P1 5 P1 5 P1 25 A 2 JA JH Series Rota
3. ation when loading parts High productivity Package Checklist JA JH Series Rotary Power Chuck is shipped with the following items 1 JATO Rotary Power Chuck 1 User s Manual Mounting Screws 1 Set of Standard Blank Jaw 1 Fixing Bar Jaw fixing Screws 1 Hexagon Key 1 3 JA JH Series Rotary Power Chuck Introduction 1 4 Chuck Maintenance and Safety Notifications Chuck Maintenance Please follow the instructions below to perform chuck maintenance 1 The bearings of a JATO Rotary Power Chuck need to be lubricated regularly The recommended brand of the grease is SKF LGEP2 bearing grease When lubricating for the first time inject 50cc grease into the Grease Nozzle 10 in Figure 1 1 Afterwards 10cc is enough to be injected into the Nozzle each time when lubricating 2 Follow the chart below to lubricate chuck s bearing on a regular basis Operating RPM Interval for Greasing the Chuck 0 500 Every 200 operating hours 501 1000 Every 90 operating hours 1001 1500 Every 40 operating hours 1501 2000 Every 16 operating hours 3 Please lubricate the clearance between the Spring Collet and the Tapered Sleeve every 4 operating hours Refer to the figure below This may prevent the chuck from being stuck or not opening 4 Avoid using cutting fluid with JATO Rotary Power Chuck If it s absolutely necessary to use cutting fluid please don t spray the fluid to the chuck directly A
4. ck System 5 Screw one side of the fixing bar into the chuck and place the other side between the slide ways or any other part of your machine that can provide stable support This fixing bar is used to stop the stationary part of the chuck from rotating 6 Run the spindle at low speed 100rpm for instance to check if the chuck works smoothly 7 Install the jaws with the jaw fixing screws Check if the chuck clamps the workpiece properly 1 6 Ordering of Harden Jaws JATO provides harden jaws for customers Please provide us the drawing of your workpiece or specify the dimension of the jaws referring to the following figure The figure shows two types of the jaws that are most commonly used by our customers Jaws for special applications are available please contact us for more information Please note that the D of the jaws A should be exactly the same with the O D of your workpiece It means that if the O D of your workpiece is 20 0mm please order 20 0mm I D jaws not 20 4mm I D ones 1 8 JA JH Series Rotary Power Chuck Introduction pA B Type For Shorter Parts A Type For Longer Parts l j Specify I D of Jaw p A Specify I D of Jaw g A l Specifv Length of Parts C 1 7 Ordering of Blank Jaws JATO also provides Blank Jaws and Jaw Machining Jig for customers who make jaws bv themselves 1 Install the Jaw Machining Jig onto lathe The run out of the Jig should be within 0
5. ds of machining tasks right away 1 1 JA JH Series Rotary Power Chuck Pa EEN AAR an OP Figure 1 1 Introduction Part No Description Chuck Body Tapered Sleeve Spring Collet Jaws Piston Air Oil Inlet A Close Side Air Oil Inlet B Open Side Chuck Fixing Bar O Rings AO ON OOP WO PM Grease Nozzle Bearings 1 2 JA JH Series Rotary Power Chuck 1 2 Introduction Refer to the section view of JATO Rotary Power Chuck shown in figure 1 1 When the air oil goes into chuck via Inlet A 6 in figure 1 1 the air oil is guided to push the Piston 5 in figure 1 1 to move the Tapered Sleeve 2 in figure 1 1 forward to close the Spring Collet 3 in figure 1 1 The workpiece is clamped by the Jaws 4 in figure1 1 that are attached on the Spring Collet And the workpiece is released when this process reverses as the air oil goes into chuck via Inlet B 7 in figure1 1 Product Features e Air Hydro cylinder is built in No need for extra cylinders e Easy to install e Repeatability for collet type power chuck 0 03mm 0 05mm 0 001 0 002 e Repeatability for jaw type power chuck 0 05mm 0 08mm 0 002 0 003 e Aluminum alloy chuck body Light weighted Good heat dispensation e High flexibility with quick jaw collet change design Through hole is reserved for bar feeder Allow non stop oper
6. e mounting screws of the spindle adaptor the chuck and the jaws are properly tightened Turn off the power before removing installing adjusting inspecting or lubricating the chuck 4 Do not exceed the maximum operating air oil pressure listed in 1 5 JA JH Series Rotary Power Chuck Introduction the manual 5 Do not exceed the maximum RPM listed in the manual 1 5 Chuck Installation There is a video for helping you to know more about the installation of JATO Rotary Power Chuck Please refer to www jato precision com to download the video or contact us for more information 1 Remove the existing chuck on the lathe 2 Install the adaptor onto the spindle Check the radial and face run out based on the chuck adaptor Please refer to the following figure 3 Install the chuck onto the spindle adaptor Screw in and tighten the mounting bolts Rotate the chuck spindle manually to check if the chuck is installed properly Please refer to the figure below 1 6 JA JH Series Rotary Power Chuck Introduction Bolts Power Chuck Spindle Adaptor Connect the air hydraulic supply system to the chuck Switch the control valve to check if the chuck opens closes properly Rotary Power Chuck Control Valve Hydraulic Power Chuck System 1 7 JA JH Series Rotary Power Chuck Introduction Filter Lubricator Regulator Rotary Power Chuck Compressor Air Power Chu
7. nd please also shorten the interval 1 4 JA JH Series Rotary Power Chuck Introduction of greasing the chuck s bearing to every 16 operating hours Please keep the workpiece and the chuck clean from chips or debris especially when the chuck is loading chucking Chips dust or debris may damage the ground Tapered Sleeve To prevent the Spring Collet from being fatigue do no turn off the power and close the chuck without a workpiece being clamped For Air Rotary Power Chuck JA5 25 JA7 40 JA7 70 please add a set of air lubricator in the air supplying system to lubricate the chuck s O Rings The recommended lubricant is Mobil DTE Light or equivalent For Hydraulic Rotary Power Chuck JH5 25 JH7 40 JH7 70 JH9 120 warm up your hydraulic system for 20 minutes before daily operation The viscosity of hydraulic oil will be higher under a low temperature environment especially after over night cooling This may makes the operating pressure higher and damage the Spring Collet For Hydraulic Rotary Power Chuck JH5 25 JH7 40 JH7 70 JH9 120 the life of the bearing will be longer under lower operating pressure Increase hydraulic pressure bit by bit to find the exact operating pressure that the workpiece can be clamped properly by the chuck Safety Notifications 1 Add a safety shield to prevent injury caused by flying debris or facture of Spring Collet especially when the chuck is operated under high speed Make sure th
8. ry Power Chuck Dimensions and Specifications Specifications OTT Air Hydro Air Air Input 2 7kg cm2 2 7kg cm2 2 7kg cm2 Pressure 28 100psi 28 1 00psi 28 1 00psi Max RPM 1400 1600 1800 1 5mm 0 06 1 5mm 0 06 1 5mm 0 06 Through ne 68mm 2 68 45mm 1 77 26mm 1 02 ole 15 0kg 33lbs 14 0kg 31lbs 7 5kg 17lbs JH9 120 JH7 70 JH7 40 JH5 25 Input 10 15kg cm2 10 20kg cm2 10 20kg cm2 10 25kg cm2 Pressure 143 214psi 143 280psi 143 280psi 143 357psi Max RPM 1000 1400 1600 1800 Stroke 1 5mm 0 06 1 5mm 0 06 1 5mm 0 06 1 5mm 0 06 sa Hole Weight 38kg 84lbs 12 5kg 28lbs 12 0kg 26lbs 7 0kg 15lbs 119mm 4 69 68mm 2 68 45mm 1 77 26mm 1 02 A 3 JA JH Series Rotary Power Chuck Appendix B Troubleshooting Chuck does not open Occasionally Cause Insufficient lubrication between Spring Collet and Tapered Sleeve Recommended Checking Procedure Tap the Tapered Sleeve with a hammer slightiv till the chuck opens Lubricate the clearance between the Spring Collet and Tapered Sleeve Chuck does not open Frequentiv Cause Recommended Checking Procedure Over operating pressure on close side Tap the Tapered Sleeve with a hammer slightiv till the chuck opens Turn down the pressure Jaw over worn Jaw s I D over sized Tap the Tapered Sleeve with a hammer slightly
9. till the chuck opens Replace with new jaws Oil Air leakage Cause Recommended Checking Procedure O Rings worn out Contact JATO for repairing There is a document available that introduces how to dismantle repair and re assemble the chuck Contact JATO for more information B 1 JA JH Series Rotary Power Chuck Noise when operation Troubleshooting Cause Recommended Checking Procedure Bearings damaged due to over pressure Bearings damaged due to uncleanness Bearings damaged due to product life Contact JATO for repairing There is a document available that introduces how to dismantle repair and re assemble the chuck Contact JATO for more information Spring Collet Fractured Cause Recommended Checking Procedure Over operating pressure Improper jaw design Collet damaged due to product life Contact JATO for repairing There is a document available that introduces how to dismantle repair and re assemble the chuck Contact JATO for more information B 2 JA JH Series Rotary Power Chuck JATO Precision Industries Inc Tel 886 4 24365682 Fax 886 4 24365602 info jato precision com www jato precision com
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