Grizzly G0720R Owner'S Manual Download Page 1

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MODEL G0720R

HEAVY-DUTY BENCHTOP

MILLING MACHINE

OWNER'S MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

(FOR MODELS MANUFACTURED SINCE 11/10) #CR13495 PRINTED IN CHINA

Summary of Contents for G0720R

Page 1: ...AL COPYRIGHT NOVEMBER 2010 BY GRIZZLY INDUSTRIAL INC REVISED MAY 2018 HE WARNING NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL INC...

Page 2: ...g grinding tool integrity and the usage of personal protective equipment The manufacturer will not be held liable for injury or property damage from negligence improper training machine modifications...

Page 3: ...llation 22 Removal 22 R 8 Collet Installation Removal 23 Installation 23 Removal 23 Headstock Travel Z Axis Rotation 24 Raising Lowering 24 Tilting 25 Table Travel X Axis Y Axis 26 X Axis 26 Y Axis 26...

Page 4: ...rizzly Technical Support 1815 W Battlefield Springfield MO 65807 Phone 570 546 9663 Email techsupport grizzly com We want your feedback on this manual What did you like about it Where could it be impr...

Page 5: ...t Iron Base J Base Mounting Boss K Cross Y Axis Handwheel L Precision Dovetailed Table Ways M Table Locks N Longitudinal Scale O Milling Table P Spindle Rotation Button Q Drill Chuck R Quill Lock Leve...

Page 6: ...3 4 x 33 in Shipping Dimensions Type Wood Crate Content Machine Weight 768 lbs Length x Width x Height 41 x 52 x 36 in Electrical Power Requirement 110V Single Phase 60 Hz Prewired Voltage 110V Full L...

Page 7: ...PM End Milling Capacity 1 in Face Milling Capacity 2 1 2 in Table Info Table Length 32 1 4 in Table Width 9 1 2 in Table Thickness 2 5 8 in Number of T Slots 4 T Slot Size 9 16 in T Slots Centers 2 1...

Page 8: ...proof DANGEROUS ENVIRONMENTS Do not use machinery in areas that are wet cluttered or have poor lighting Operating machinery in these areas greatly increases the risk of accidents and injury MENTAL ALE...

Page 9: ...moving parts or flying debris Make sure they are properly installed undamaged and working correctly BEFORE operating machine FORCING MACHINERY Do not force machine It will do the job safer and better...

Page 10: ...OLDING Before starting the machine be certain the workpiece has been properly clamped to the table NEVER hold the workpiece by hand when using the mill CHUCK KEY SAFETY Always remove your chuck key dr...

Page 11: ...of time damage overheating or fire may result especially if connected to an undersized circuit To reduce the risk of these hazards avoid over loading the machine during operation and make sure it is c...

Page 12: ...must meet the following size requirements Minimum Gauge Size 12 AWG Maximum Length Shorter is Better 50 ft Figure 2 Typical 5 15 plug and receptacle Grounding Prong Neutral Hot 5 15 PLUG GROUNDED 5 1...

Page 13: ...ver the machine is damaged please imme diately call Customer Service at 570 546 9663 for advice Save the containers and all packing materials for possible inspection by the carrier or its agent Otherw...

Page 14: ...can be obtained at your local hardware store NOTICE If you cannot find an item on this list care fully check around inside the machine and packaging materials Often these items get lost in packaging...

Page 15: ...rags Cleaner degreaser WD 40 works well Safety glasses disposable gloves Plastic paint scraper optional Basic steps for removing rust preventative 1 Put on safety glasses 2 Coat the rust preventative...

Page 16: ...The physical environment where the machine is operated is important for safe operation and lon gevity of machine components For best results operate this machine in a dry environment that is free from...

Page 17: ...through mount setup Test Run Once the assembly is complete test run your machine to make sure it runs properly and is ready for regular operation The test run consists of verifying the following 1 The...

Page 18: ...elevation motor 9 Push the START button to start the spindle When operating correctly the machine runs smoothly with little or no vibration or rubbing noises Investigate and correct strange or unusua...

Page 19: ...the speed to 800 RPM and let it run for another ten minutes 5 Push the EMERGENCY STOP button and rotate the spindle speed dial counterclock wise to its minimum position 6 Start the mill and push one o...

Page 20: ...overview is to provide the nov ice machine operator with a basic understanding of how the machine is used during operation so the machine controls components discussed later in this manual are easier...

Page 21: ...sition Rotate the button clockwise to reset it Review this section to locate and understand how to use the mill controls and factors for machine operation General Controls The controls shown in Figure...

Page 22: ...nt of grade conventions U Calibrate Zeros the protractor at any position within the range of headstock tilt V HOLD Locks the protractor at its current displayed value Digital Spindle Height Gauge The...

Page 23: ...ock knob tightened Fold Out Lever Downfeed Handle Fine Feed Lock Knob Quill Lock Lever Closely follow the proper cutting speed and prop er feed to reduce undue strain on all moving parts and increase...

Page 24: ...r 4 While supporting the chuck and arbor with one hand snug the drawbar with the drawbar hex wrench Note Do not overtighten the drawbar Overtightening makes arbor removal difficult and will damage the...

Page 25: ...ing the tool in the collet with one hand snug the drawbar with the drawbar hex wrench in your opposite hand Note Do not overtighten the drawbar Overtightening makes collet removal difficult and will d...

Page 26: ...he leadscrew has run out of thread a stop block see Figure 20 contacts either the upper or lower limit switch to stop the elevation motor from over running the physical limitations of the leadscrew le...

Page 27: ...ee hex nuts and recheck your settings Note As described earlier in the manual the digital protractor is equipped with an auto shutoff feature So if during setup or milling operations it shuts OFF your...

Page 28: ...ed for general workpiece positioning and the graduated dial on the handwheel is for precise positioning For milling operations where the table is moved in or out in the Y axis left and right X axis mo...

Page 29: ...e functions of the machine controls 2 Zero the spindle height scale and select units of measure and calculate your maximum tapping depth without bottoming out the tap 3 Clamp the workpiece to the mill...

Page 30: ...ine that could cause it to function improperly increasing the risk of serious personal injury To minimize this risk only install accessories recommended for this machine by Grizzly NOTICE Refer to the...

Page 31: ...styles 3 16 1 4 5 16 3 8 7 16 1 2 9 16 5 8 3 8 11 16 and 3 4 Figure 29 G9760 20 PC End Mill Set G9765 9 PC Ball End Mill Set Features 2 flute ball nose end mills Includes the following sizes 1 8 3 16...

Page 32: ...n Figure 34 Primrose Armor Plate Lubricant Ongoing To maintain a low risk of injury and proper machine operation if you ever observe any of the items below shut down the machine immediately and fix th...

Page 33: ...39 Make sure to use an oil gun fitted with a rubber tip that is wide enough to seal the ball oiler inlet This seal allows the gun to build hydraulic pressure in order to flush out contaminants and del...

Page 34: ...MILL FROM POWER 3 Remove the way cover see Figure 41 for lower column leadscrew access 4 Using mineral spirits clean the upper and lower portions of the column leadscrew 5 Lightly coat the entire lea...

Page 35: ...or battery replacement Positive Pole of All Three Batteries Must Face Outward Battery Replacement When the batteries for the digital spindle scale need replacement the display will be dim or not displ...

Page 36: ...g position 2 Replace tapping button slip ring switch 3 Inspect circuit boards wiring connections plugs and repair replace as required Poor surface finishes 1 Feed rate too fast 2 Dull cutter 3 Lock no...

Page 37: ...hould be slight resistance felt in the handwheels when the table is moved The headstock and table on this mill each use a long steel wedge called a gib that is positioned between the component and its...

Page 38: ...inside of the electrical box 8 Cover and place the machine in a dry area that is out of direct sunlight and away from hazardous fumes paint solvents or gas Fumes and sunlight can bleach or discolor p...

Page 39: ...e diagrams is current at the time of printing but may not match your machine If you find this to be the case use the wiring diagram inside the motor junction box CAPACITORS INVERTERS Some capacitors a...

Page 40: ...Motor Wiring Overview Component Locations System Overview Spindle Motor See Page 40 and Figure 54 Control Panel See Page 40 and Figure 50 Chip Guard Safety Switch See Page 40 and Figure 51 Spindle Dir...

Page 41: ...0 400V ZM3303 Start Capacitor 14MFD 450VAC MAIN POWER SWITCH both sides shown Front View Rear View 1 2 3 4 Pu GND S1 K3 K4 5V SA SB SC Neutral Hot Ground 110 VAC 5 15 Plug As Recommended To Control Pa...

Page 42: ...n START Button Milling Tapping Mode Button 1 2 1 2 Pu Spindle Direction Switch Halogen Work Lamp 0000 Digital Spindle Depth Unit Silver Oxide Battery SR44 1 55V 0000 Mini Digital Protractor Lithium Ba...

Page 43: ...PAGE 37 Electrical Components Figure 48 Main power switch and transformer Figure 47 Motor power supply circuit board Figure 49 Rear view electrical components Main Power Switch Circuit Board Fuse Ele...

Page 44: ...AGE 37 Figure 53 Tachometer electrical Figure 50 Control panel electrical Figure 51 Chip guard safety switch Figure 52 Tapping button slip ring contact Spindle Motor Inside Headstock Elevation Motor F...

Page 45: ...61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 148 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 11...

Page 46: ...0 SPINDLE ROTATION BUTTON 65 P0720R065 SAFETY SWITCH BRACKET 21 P0720R021 SPINDLE PULLEY 66 P0720R066 HEX NUT M6 1 22 P0720R022 PHLP HD SCR M5 8 X 14 67 P0720R067 COMPRESSION SPRING 1 4 X 8 2 X 24 23...

Page 47: ...M 103 P0720R103 WORM SHAFT 132 P0720R132 LOCK PLUNGER 104 P0720R104 THRUST BEARING 8101 133 P0720R133 CHIP SHIELD POLYCARBONATE 105 P0720R105 SHAFT FLANGE 134 P0720R134 ELEVATION BUTTON 106 P0720R106...

Page 48: ...214 215 216 217 218 219 220 221 222 223 224 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245A 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263...

Page 49: ...250 PHLP HD SCR M6 1 X 8 216 P0720R216 INT THREADED TAPER PIN 6 X 20 251 P0720R251 POINTER 217 P0720R217 PHLP HD SCR M5 8 X 8 252 P0720R252 FLAT WASHER 6MM 218 P0720R218 MOTOR POWER SUPPLY CIRCUIT BOA...

Page 50: ...315 316 317 318 319 320 321 323 324 325 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 301 303 314...

Page 51: ...SCR M6 1 X 8 346 P0720R346 KEY 4 X 4 X 20 317 P0720R317 STATIONARY LIMIT BLOCK 347 P0720R347 THREADED BUSHING 318 P0720R318 CAP SCREW M6 1 X 20 348 P0720R348 LONGITUDINAL HANDWHEEL 319 P0720R319 POIN...

Page 52: ...readable REPLACE that label before using the machine again Contact Grizzly at 800 523 4777 or www grizzly com to order new labels REF PART DESCRIPTION REF PART DESCRIPTION 401 P0720R401 ELECTRICITY LA...

Page 53: ...een a woodworker metalworker ____ 0 2 Years ____ 2 8 Years ____ 8 20 Years ____20 Years 6 How many of your machines or tools are Grizzly ____ 0 2 ____ 3 5 ____ 6 9 ____10 7 Do you think your machine r...

Page 54: ...LINE FOLD ALONG DOTTED LINE GRIZZLY INDUSTRIAL INC P O BOX 2069 BELLINGHAM WA 98227 2069 Place Stamp Here Name_______________________________ Street_______________________________ City______________S...

Page 55: ...y shall be tried in the State of Washington County of Whatcom We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages ari...

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