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13.0

Replacement Parts

Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-
800-274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial
Number of your machine available when you call will allow us to serve you quickly and accurately.

Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.

13.1.1

Lift Mechanism – Exploded View

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Содержание J-720R

Страница 1: ...nd Parts Manual 3 ft Radial Arm Drill Press Model J 720R JET 427 New Sanford Road LaVergne Tennessee 37086 Part No M 320033 Ph 800 274 6848 Revision H1 06 2019 www jettools com Copyright 2019 JET This pdf document is bookmarked ...

Страница 2: ...he changing of accessories No attempt shall be made to modify or have makeshift repairs done to the machine This not only voids the warranty but also renders the machine unsafe 11 Secure work Use clamps or a vise to hold work when practical It is safer than using your hands and it frees both hands to operate the machine 12 Never brush away chips while the machine is in operation 13 Keep work area ...

Страница 3: ...ear and safety shoes are recommended See Figure D 10 Wear ear protectors plugs or muffs during extended periods of operation See Figure E Figure 1 SAVE THESE INSTRUCTIONS Familiarize yourself with the following safety notices used in this manual This means that if precautions are not heeded it may result in minor injury and or possible machine damage This means that if precautions are not heeded i...

Страница 4: ... feed 17 8 12 Manual feed roughing operations 17 8 13 Fine manual feed using power feed clutch 17 8 14 Tapping operations 18 8 15 Power ON OFF 18 8 16 Power ON light 18 8 17 Coolant control 18 8 18 Spindle motor controls 18 8 19 Turning off spindle drive 18 8 20 Using load ammeter 18 8 21 Arm spindle control lever 19 9 0 Adjustments 19 9 1 Clamping force 19 9 2 Head Rail Backlash 19 9 3 Feed lever...

Страница 5: ...nce In addition parameters of RPM power feed rate and drilling depth can be pre set by the operator using controls conveniently positioned on the drill head The power train gears and spline shaft are made of high quality heat treated and ground nickel chrome steel offering greater strength and smoothness to high torque loads The spindle is of case hardened steel and supported by dual row taper rol...

Страница 6: ...x table dimensions LxWxH 23 5 8 x 17 1 2 x 15 in 600 x 445 x 380 mm T slots in table 6 at 3 4 in 19 mm Base dimensions LxWxH 49 1 4 x 25 1 4 x 6 3 8 in 1250 x 640 x 160 mm T slots in base 3 at 3 4 in 19 mm Additional specifications Coolant pump motor TEFC 1 8 HP 0 1kW 3 PH 220 440V 0 2 0 1A 60Hz Machine height floor to motor at max elevation 85 1 2 in 2170 mm Machine height floor to column top 73 ...

Страница 7: ... Keep machine away from electrical interference sources such as welding machines and EDM Electric Discharge Machining 6 Illumination of work area should be greater than 500lux 7 Work area must have adequate ventilation 4 2 Power Supply Requirements 1 Acceptable voltage fluctuation normally 10 2 Acceptable frequency fluctuation 1Hz 50 60Hz 3 Acceptable momentary power off duration less than 10m sec...

Страница 8: ...tion Plate 10 Spindle Motor 11 Drill Head Gearbox see Figure 10 for details 12 Arm Rail 13 Arm 14 Rack 15 Arm Rotation Handle 16 Box Table 17 Handwheel horizontal head travel 18 Spindle 19 Coolant Nozzle 20 Caution Label Stop Spindle p n J1230R CL 21 Cam Shaft Cover 22 Caution Label High Voltage p n CL HV 23 Electrical Control Box 24 Work Lamp 25 Cover 26 Coolant Pump 27 Coolant Flow Valve 28 Work...

Страница 9: ...9 General Features and Terminology cont Figure 5 2 ...

Страница 10: ... Figure 6 1 shows spacing for the 360 rotational path of the arm plus 1000mm approx 40 inches of general maintenance area on each side Distance column center to arm limit Maintenance area A Total space required B 1028mm 40 5 in 1000mm 40 inches 4056mm 160 in Figure 6 2 ...

Страница 11: ...r distributor Read the instruction manual thoroughly for assembly maintenance and safety instructions Contents of Shipping Container Figure 6 3 1 Radial Arm Drill Press not shown 6 Leveling Pads 1 Tool Box containing 1 Grease gun 1 Oil bottle 1 Tapered Drift 1 Adjustable wrench 1 Set of hex keys 1 Flat blade screwdriver 1 Cross point screwdriver 1 Instructions and Parts Manual not shown 1 Product ...

Страница 12: ...instructions in sect 12 0 12 Perform a lubrication check at all points recommended in sect 12 0 13 Follow directions in sect 8 0 to check all operation functions of the drill press If coolant is being used put coolant in the sump and test coolant delivery 14 When all of the above operations are complete the machine is ready for service 6 4 Electrical Connections Electrical set up should be perform...

Страница 13: ...abeled R S and T to the three power lines in branch 4 Turn power to machine ON at cutout box 5 Turn coolant switch See Figure 7 1 to the ON position Make sure there is coolant in flood coolant system before operating pump 6 Observe the rotation through the glass atop the pump Shaft rotation should match direction of the arrow cast into the pump assembly If the shaft is rotating the wrong direction...

Страница 14: ...14 7 0 Operating Controls J720R Figure 7 1 Operating Controls ...

Страница 15: ...is in full UP position 5 Slide shank of tooling into spindle until it seats 6 Use a soft faced mallet such as lead plastic brass etc to give the tooling a sharp tap on its tip This will secure the tooling in the taper 7 Re establish power to machine The drill is ready to use To remove tooling 1 Verify that machine is disconnected from power 2 Place a wood block under the tooling in the spindle to ...

Страница 16: ...ch are selectable These recommendations are only approximate With the wide variety of drill types and coatings available as well as cutting fluids and the even wider variety of work piece materials which you might be machining you should consult with your tooling coolant and or work piece suppliers to determine the best spindle speed to use for any specific drilling operation Do not attempt to cha...

Страница 17: ...lease feed lever A to return spindle to upper position 6 Rotate feed levers A slightly counter clockwise about 5mm quill descent to start spindle 7 Turn spindle switch to SPDL FOR 8 Pull feed levers A outward to engage power feed clutch The power feed mechanism will feed drill into work piece at the rate selected on feed rate dial until selected depth of cut is complete Note The depth limit for po...

Страница 18: ...ot flow check pump rotation by observing the pump shaft It should be rotating in the direction of arrow on pump casting If rotation is incorrect see sect 6 4 3 Open coolant valve at rear of machine 27 Figure 5 2 The nozzle can be adjusted to any angle above the work piece 8 18 Spindle motor controls Power to spindle motor is controlled as follows 1 Cutout box control lever must be in ON position 2...

Страница 19: ... between head and rail Feed lever clutch engagement Spindle travel range 9 1 Clamping force 1 Turn machine OFF and press E stop button 2 Release locking handle Figure 5 1 3 Loosen socket head screw A Figure 9 1 4 Rotate adjustment nut B one turn clockwise 5 Tighten screw A 6 Tighten locking handle Figure 5 1 Figure 9 1 9 2 Head Rail Backlash If backlash appears between gearbox head and arm rail th...

Страница 20: ...ck of head opposite the auxiliary dial Move head to the far right end of rail for access 2 Move spindle to its upper position There should be 3 to 5mm 1 8 to 3 16 clearance 3 The cam should be sufficiently contacting the limiter as shown in Figure 9 5 If it does not Loosen set screw on cam L and rotate cam so that it contacts the limiter as shown in Figure 9 5 4 If needed loosen screw N and adjust...

Страница 21: ... power source Feed rate too fast Operation not in compliance with speed and feed rate tables Fuse is burned out Low voltage Spindle overloads causing fuse to blow Drill bit is too large Replace fuse in control box Correct initial problem by using smaller drill bit or lower feed rate consult appropriate feed and speed rate tables Feed rate too fast Operation not in compliance with speed and feed ra...

Страница 22: ...aTM oil AA 10 Oil Cup for spindle Top of drill head Add lubricant to full capacity Daily Mobil VactraTM oil AA 11 Oil Cups 3 for head arm contact Right and left sides of drill head Add lubricant to full capacity Daily Mobil VactraTM oil AA 12a thru 12c Arm Raising Worm Gear Rear of column Top off at fill hole 12a Fill to sight glass full level 12b Check sight glass daily Mobil VactraTM oil AA Repl...

Страница 23: ...23 Figure 12 1 Figure 12 2 Figure 12 3 Figure 12 4 Figure 12 5 ...

Страница 24: ...0 a m to 5 00 p m CST Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately Non proprietary parts such as fasteners can be found at local hardware stores or may be ordered from JET Some parts are shown for reference only and may not be available individually 13 1 1 Lift Mechanism Exploded View ...

Страница 25: ...crew M6 6L 2 22 10166G Bearing Bracket 1 23 TS 1504051 Socket Head Cap Screw M8x25L 4 24 BB 51104 Bearing 51104 1 25 BB 6204ZZ Bearing 6204ZZ 1 26 M1503 M24 Nut M24 1 28 TS 1503041 Socket Head Cap Screw M6x16L 1 29 TS 1523041 Set Screw M6x12L 1 30 10171 Nut 1 31 BB 6204ZZ Bearing 6204ZZ 1 32 BB 51104 Bearing 51104 1 33 10168 Worm Shaft 1 33 1 M1312 S36 Retainer S36 1 33 2 TS 2276081 Set Screw M6x8...

Страница 26: ...130L 220 380V 1 2 TS 1550041 Washer M6 4 3 TS 1503041 Socket Head Cap Screw M6x16L 4 4 M0602001 90 Elbow PT3 8 x PS3 8 x 90 1 5 M0506003 Tube PT3 8 x 95 L 1 6 M0602001 90 Elbow PT3 8 xPS3 8 x90 1 7 M0510003 Tube 38 x6 L 1 8 5232391 Knurled Screw M10x25L 1 9 10014 Tube Sleeve 1 10 5235811 Nut 1 2 1 11 5232421 Brass Valve 3 8 1 12 5232431 Coolant Hose 3 8 x450L 1 ...

Страница 27: ...27 13 3 1 Base Column and Arm Assemblies Exploded View ...

Страница 28: ... Head Cap Screw M6x30L 2 27 5513357 Pan Head Machine Screw 3 16 x 3 8 L 4 28 10028 Aluminum Alloy Ring 1 29 M1501003 Nut 1 2 2 30 10040 Washer 4 31 M1402009 Bolt 1 2 x 4 1 2 L 2 32 M1401 M6x65 Socket Head Cap Screw M6 x 65L 1 33 10038 Eccentric Shaft 1 34 J720R 334 Nut 1 35 10041 Washer 1 36 10035 Locking Lever 1 37 5233391 Oil Cup PT1 8 x 90 2 38 10028 Aluminum Alloy Ring 1 39 M1414006 Bolt 3 16 ...

Страница 29: ...S 1503051 Socket Head Cap Screw M6x20L 1 60 TS 1505031 Socket Head Cap Screw M10x25L 1 61 M1402011 Bolt 5 8 x 2 1 2 L 4 62 5233111 Nut 5 8 11UNC 4 63 TS 1505021 Socket Head Cap Screw M10 x 20L 4 64 J720R 364 Box Table not shown 23 5 8x17 1 2x15 1 ...

Страница 30: ...30 13 4 1 Gear Box Assembly Exploded View ...

Страница 31: ...nge Rocker Arm 1 23 TS 1524031 Set Screw M8 x 12L 4 24 10073 Shaft End Cover 1 25 M1305 5x50 Spring Pin 5mm x 50L 2 26 10064 Speed Change Shaft 1 26 1 5234741 O Ring P12 2 27 10072 Three Step Speed Change Lever 1 27 1 10070 Three Step Speed Change Lever 1 28 M1317009 Plastic Knob 5 16 2 29 10079 Bushing 1 30 BB 6002ZZ Bearing 6002ZZ 1 31 5234921 Gear 1 31 1 TS 1523021 Set Screw M6 x 8L 1 32 10074 ...

Страница 32: ... 81 BB 6007ZZ Bearing 6007ZZ 1 82 10061 Washer 1 83 5234131 Retainer R62 1 84 BB 6007ZZ Bearing 6007ZZ 1 85 5234111 Clutch Upper Gear 1 86 5234091 Clutch Lower Gear 1 87 5234141 Bearing 6007UU 1 88 5234071 Oil Seal TC42 58 8 1 88 1 5234081 O Ring P30 1 89 5234231 Spindle Shaft 1 90 5234061 Worm 1 90 1 TS 1523011 Set Screw M6x6L 1 91 M1317009 Plastic Knob 5 16 1 92 J720R 492 Feed Handle 2 93 M1305 ...

Страница 33: ... 1 133 TS 1504031 Socket Head Cap Screw M8 x 16L 4 134 10112G Gear Box Front Cover 1 135 5233911 Feed Speed Change Gear 1 136 5233821 Arm Rack 1 137 10115 Gear Shift Lever 1 138 J720R 4138 Plate 1 139 M1414006 Bolt 3 16 x 3 8 L 4 140 TS 1505041 Socket Head Cap Screw M10 x 30L 1 141 10108 Eccentric Bushing 1 142 J720R 4142 Gear 1 143 10109 Set Block 1 144 TS 1502041 Socket Head Cap Screw M5 x 16L 1...

Страница 34: ...34 13 5 1 Rear Gear Box Assembly I Exploded View ...

Страница 35: ...35 13 5 2 Rear Gear Box Assembly II Exploded View ...

Страница 36: ...10149 Feed Speed Selector 1 22 1 TS 1524021 Set Screw M8 x 10L 1 23 10150 Clamping Lever 1 24 M1317007 Knob 1 2 1 25 10131G Bearing Bracket 1 25 1 TS 1523021 Set Screw M6 x 8L 4 26 10137G Plate 1 27 10145 Handwheel Lock Nut 1 27 1 TS 1503041 Socket Head Cap Screw M6 x 16L 1 28 10143 Auxiliary Dial 1 29 M1312 S17 Retainer S17 1 30 BB 6003ZZ Bearing 6003ZZ 1 31 10140 Spring Housing 1 32 BB 6004ZZ Be...

Страница 37: ...ontrol Box 1 5 TS 1503021 Socket Head Cap Screw M6 x 10L 4 6 10157G Cover 1 7 TS 1503021 Socket Head Cap Screw M6 x 10L 4 8 10158G Mounting Plate 1 9 M1414002 Bolt 3 16 x 1 4 L 2 10 M1414009 Bolt 5 32 x 1 1 4 L 4 11 M1602037 Washer 5 32 4 12 M1501007 Nut 5 32 4 13 10159G Mounting Plate 1 14 TS 1503031 Socket Head Cap Screw M6 x 12L 2 15 M1414003 Bolt 3 16 x 1 1 4 2 16 M1315028 Cable Holder 2 ...

Страница 38: ...38 14 0 Electrical Connections for J 720R ...

Страница 39: ...R E1801005 Transformer PT40 1 OL1 E0207011 Overload Relay 230V for main motor RH 18 7 1 OL1 E0207007 Overload Relay 460V for elevating motor RH 18 4 1 OL2 E0207007 Overload Relay 230V for main motor RH 18 4 1 OL2 E0207008 Overload Relay 460V for elevating motor RH 18 1 7 1 PB1 E1618001 Emergency Push Button Switch SBT 307 1 SS1 E1304001 Selector Switch ST251 1 SS2 E1604001 Selector Switch SN1021 1...

Страница 40: ...itional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How State Law App...

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