Page 3 - Table of Contents
Table of Contents INTRODUCTION ............................................... 3 Machine description ...................................... 3Contact info.................................................... 3Manual Accuracy ........................................... 3Front View identification .........
Page 5 - INTRODUCTION; Machine Description; Manual Accuracy; Contact Info
Model G0747/G0748 (Mfg. Since 8/12) -3- INTRODUCTION these milling machines are designed to remove material from a metal workpiece that is secured to the work table or a mill vise. the cutting tool is fixed to the rotating spindle and moved into the workpiece by lowering the spindle or moving the ta...
Page 6 - Front View Identification
-4- Model G0747/G0748 (Mfg. Since 8/12) Front View Identification Motor slotted Work table X-Axis Ball handle X-Axis power Feed Mounting point (1 of 4) Knee y-Axis Ball handle Knee Crank power Feed limit switch X-Axis Ball handle ram headstock (see pages 5–6)
Page 7 - Model G0747 Headstock Identification
Model G0747/G0748 (Mfg. Since 8/12) -5- To reduce your risk of serious injury, read this entire manual bEFORE using machine. Model G0747 Headstock Identification Motor Belt tension Adjustment lever Motor lock lever spindle speed range selector Manual/power downfeed selector Coarse downfeed lever Qui...
Page 8 - Model G0748 Headstock Identification
-6- Model G0747/G0748 (Mfg. Since 8/12) Model G0748 Headstock Identification low range Variable speed indicator Fine downfeed handwheel Fine downfeed Clutch lever Adjustable downfeed stop Quill & spindle Quill lock lever dial indicator rod Motor spindle Brake spindle switch Auto-downfeed rate se...
Page 11 - MODEL G0748 VERTICAL MILL - VARIABLE SPEED
Model G0747/G0748 (Mfg. Since 8/12) -9- The information contained herein is deemed accurate as of 6/23/2013 and represents our most recent product specifications. Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. PAGE 1 OF 3 Model G0748 ...
Page 13 - For your Own Safety, Read Instruction; NOTICE; Safety Instructions for Machinery
Model G0747/G0748 (Mfg. Since 8/12) -11- ELECTRICAL EQUIPMENT INJURy RISKS. you can be shocked, burned, or killed by touching live electrical components or improperly grounded machinery. to reduce this risk, only allow qualified service personnel to do electrical installation or repair work, and alw...
Page 15 - Additional Safety for Milling Machines
Model G0747/G0748 (Mfg. Since 8/12) -13- Additional Safety for Milling Machines Like all machinery there is potential danger when operating this machine. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this machine with respect and caution to decrease the risk...
Page 16 - SECTION 2: POWER SUPPLy; Availability
-14- Model G0747/G0748 (Mfg. Since 8/12) SECTION 2: POWER SUPPLy Availability Before installing the machine, consider the avail-ability and proximity of the required power supply circuit. If an existing circuit does not meet the requirements for this machine, a new circuit must be installed. To mini...
Page 18 - Unpacking; Needed for Setup
-16- Model G0747/G0748 (Mfg. Since 8/12) SECTION 3: SETUP Your machine was carefully packaged for safe transportation. Remove the packaging materials from around your machine and inspect it. If you discover any damage, please call us immediately at (570) 546-9663 for advice. Save the containers and ...
Page 19 - Inventory
Model G0747/G0748 (Mfg. Since 8/12) -17- 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 materials while unpack- ing or they are pre-installed at the factory. Inventory The following is a l...
Page 20 - Cleanup
-18- Model G0747/G0748 (Mfg. Since 8/12) The unpainted surfaces of your machine are coated with a heavy-duty rust preventative that prevents corrosion during shipment and storage. This rust preventative works extremely well, but it will take a little time to clean. Be patient and do a thorough job c...
Page 21 - Site Considerations; Weight Load; Space Allocation
Model G0747/G0748 (Mfg. Since 8/12) -19- Site Considerations Figure 4. Minimum working clearances. Wall Wall 30" Minimum Clearance 24" 30" Minimum Clearance 56 1 ⁄ 2 " 40" 95" Weight Load refer to the Machine Data Sheet for the weight of your machine. Make sure that the surfa...
Page 25 - Test Run; Mill Test Run
Model G0747/G0748 (Mfg. Since 8/12) -23- Test Run After all preparation steps have been completed, the machine and its safety features must be tested to ensure correct operation. if you discover a problem with the operation of the machine or its safety components, do not operate it further until you...
Page 26 - Power Feed Test Run
-24- Model G0747/G0748 (Mfg. Since 8/12) Power Feed Test Run the mill comes with a power feed unit for X-axis table travel. proper operation of the limit switch attached to the front middle of the table is criti-cal for the safe use of this power feed unit. if the power feed does not operate as expe...
Page 27 - Adjustments
Model G0747/G0748 (Mfg. Since 8/12) -25- Spindle break-In Complete the spindle bearing break-in pro- cedure to prevent rapid wear and tear of spindle components once the mill is placed into operation. the bearings and gears used in the mill are man-ufactured to very close tolerances. Before opera-ti...
Page 28 - SECTION 4: OPERATIONS; Operation Overview
-26- Model G0747/G0748 (Mfg. Since 8/12) SECTION 4: OPERATIONS Operation Overview The purpose of this 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 easi...
Page 29 - Table Movement; Graduated Index Rings; Table Locks
Model G0747/G0748 (Mfg. Since 8/12) -27- Table Movement the mill table moves in three directions, as illus-trated in Figure 16: • X-axis (longitudinal) • y-axis (cross) • z-axis (vertical) these movements are controlled by table ball handles and the z-axis crank. Additionally, the table can be moved...
Page 30 - X-Axis Power Feed Identification
-28- Model G0747/G0748 (Mfg. Since 8/12) X-Axis Power Feed Identification the mill is equipped with a power feed unit for X-axis table movement. refer to Figure 19 and the descriptions below to understand the func-tions of the various components of the power feed system. A. Limit Switch. stops table...
Page 31 - X-Axis Power Feed Operation; Head Movement
Model G0747/G0748 (Mfg. Since 8/12) -29- X-Axis Power Feed Operation Tool Needed Qty hex Wrench 8mm ............................................... 1 To operate the X-axis power feed: 1. loosen the X-axis table locks (refer to Figure 18 on Page 27 for locations). 2. secure the limit stops if needed ...
Page 32 - Tilting Head Forward/backward; Rotating Head Left/Right
-30- Model G0747/G0748 (Mfg. Since 8/12) Tilting Head Forward/backward 1. disConneCt Mill FroM poWer! 2. loosen the three tilt lock bolts shown in Figure 22. Figure 22. head tilt controls. lock Bolts tilt Bolt 3. use one hand to apply pressure to the head in the direction of tilt, then slowly rotate...
Page 33 - Ram Movement; Moving Ram Forward/backward
Model G0747/G0748 (Mfg. Since 8/12) -31- Ram Movement the ram travels forward or backward 24" and rotates 360° around the turret. Tool Needed Qty Wrench 19mm .................................................... 1 Moving Ram Forward/backward 1. disConneCt Mill FroM poWer! 2. loosen the two lock b...
Page 34 - Spindle Speed; Determining Spindle Speed
-32- Model G0747/G0748 (Mfg. Since 8/12) Spindle Speed using the correct spindle speed is important for safe and satisfactory results, as well as maximiz-ing tool life. to set the spindle speed for your operation, you will need to: (1) determine the best spindle speed for the cutting task, and (2) c...
Page 35 - Setting Model G0747 Spindle Speed
Model G0747/G0748 (Mfg. Since 8/12) -33- Setting Model G0747 Spindle Speed the Model g0747 has 16 spindle speeds—eight in low motor speed and eight in high motor speed. setting the spindle speed involves: 1) selecting the spindle speed range, 2) positioning the V-belt, and 3) setting the spindle swi...
Page 36 - Low Spindle Speed Range
-34- Model G0747/G0748 (Mfg. Since 8/12) Figure 31. Model g0747 spindle switch. 6. loosen the two motor lock levers, one on each side of the head, then pull the belt ten-sion adjustment lever forward to release the V-belt tension. 7. refer to the illustrations in Figure 30, and position the V-belt o...
Page 37 - Setting Model G0748 Spindle Speed
Model G0747/G0748 (Mfg. Since 8/12) -35- Setting Model G0748 Spindle Speed the Model g0748 has variable spindle speeds from 60 to 4200 rpM. setting the spindle speed involves 1) selecting the spindle speed range, and 2) using the variable-speed handwheel to select the spindle speed. To set the Model...
Page 38 - Spindle Downfeed; Downfeed Controls
-36- Model G0747/G0748 (Mfg. Since 8/12) Spindle Downfeed spindle downfeed movement on the mill is con-trolled by three mechanisms: 1) the coarse downfeed lever, 2) the fine downfeed handwheel, and 3) the auto-downfeed system. Downfeed Controls use Figure 34 and the following descriptions to become ...
Page 39 - Coarse Downfeed; Fine Downfeed
Model G0747/G0748 (Mfg. Since 8/12) -37- Coarse Downfeed use the coarse downfeed lever to quickly move the spindle manually. To use the coarse downfeed: 1. Make sure the spindle is completely stopped. 2. pull the downfeed selector knob out, then rotate it clockwise until the knob pin seats in the fo...
Page 41 - Spindle brake
Model G0747/G0748 (Mfg. Since 8/12) -39- 7. select one of the three downfeed rates by pulling the knob of the auto-downfeed rate selector out, position the selector over the appropriate detent, then release the knob. Make sure the pin is firmly seated by attempt-ing to move the selector without pull...
Page 42 - Loading Tooling; Tooling; Unloading Tooling
-40- Model G0747/G0748 (Mfg. Since 8/12) the mill is equipped with an r8 spindle taper and a 7 ⁄ 16 "-20 x 23 1 ⁄ 2 " spindle drawbar (see Figure 41). Tools Needed Qty Wrench 21mm .................................................... 1Brass hammer ................................................
Page 43 - SECTION 5: ACCESSORIES; order online at
Model G0747/G0748 (Mfg. Since 8/12) -41- SECTION 5: ACCESSORIES ACCessories Installing unapproved accessories may cause machine to malfunction, resulting in serious personal injury or machine damage. To reduce this risk, only install accessories recommended for this machine by Grizzly. NOTICE Refer ...
Page 45 - SECTION 6: MAINTENANCE; Ongoing; Schedule; Daily, After Operations; Protecting
Model G0747/G0748 (Mfg. Since 8/12) -43- SECTION 6: MAINTENANCE For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section. Ongoing to maintain a low risk of injury and proper machine operation, if you ever observe any of ...
Page 46 - Lubrication; Quill
-44- Model G0747/G0748 (Mfg. Since 8/12) the mill has numerous moving metal-to-metal contacts that require regular and proper lubrica-tion to ensure efficient and long-lasting operation, and to protect your investment. other than the lubrication points covered in this section, all other bearings are...
Page 47 - Headstock Gearing
Model G0747/G0748 (Mfg. Since 8/12) -45- Table Ways (One-Shot Oiler) oil type ...... Model t23962 or iso 68 equivalentoil Amount ................... one pull of pump handleCheck/Add Frequency ........4–8 hrs. of operation the one-shot oiler is connected to a series of alu-minum tubes that carry the ...
Page 48 - Table Elevation Leadscrew
-46- Model G0747/G0748 (Mfg. Since 8/12) Ram Ways oil type ...... Model t23962 or iso 68 equivalentoil Amount ............................................ thin CoatCheck/Add Frequency .......... 40 hrs. of operation Move the ram back and forth as necessary to access the full length of the ways (see ...
Page 49 - Power Feed Gears
Model G0747/G0748 (Mfg. Since 8/12) -47- Power Feed Gears grease type ........................nlgi 2 or equivalentgrease Amount .........two pumps of grease gunCheck/Add Frequency ........ 160 hrs. of operation Tool Needed Qty Wrench 19mm .................................................... 1 To lub...
Page 50 - Machine Storage
-48- Model G0747/G0748 (Mfg. Since 8/12) Machine Storage to avoid rust problems or corrosion damage, use the following information to protect your invest-ment when storing the mill for any length of time. • disConneCt Mill FroM poWer! • lubricate the mill as directed in the lubrication section begin...
Page 51 - Troubleshooting
Model G0747/G0748 (Mfg. Since 8/12) -49- Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663. Note: Please gather the serial number and manuf...
Page 53 - Adjusting Gibs
Model G0747/G0748 (Mfg. Since 8/12) -51- Adjusting Gibs gibs are tapered lengths of metal that are sand-wiched between two moving surfaces. gibs con-trol the gap between these surfaces and how they slide past one another. Correctly adjusting the gibs is critical to producing good milling results. ti...
Page 54 - X-Axis Leadscrew backlash
-52- Model G0747/G0748 (Mfg. Since 8/12) Adjusting Leadscrew backlash leadscrew backlash is the amount of motion the leadscrew rotates before the attached device begins to move. leadscrews will always have a certain amount of backlash that will increase with normal wear. generally, 0.005"–0.010&...
Page 55 - Cross Leadscrew backlash
Model G0747/G0748 (Mfg. Since 8/12) -53- Cross Leadscrew backlash 1. disConneCt Mill FroM poWer! 2. remove the hex nut and ball handle from the y-axis leadscrew. Note: In the next step, take care not to mis-place the leadscrew key as you remove the parts. 3. unthread and remove the knurled retaining...
Page 56 - Tramming Spindle
-54- Model G0747/G0748 (Mfg. Since 8/12) After positioning the head at an angle and when your operation requires that the spindle axis be precisely perpendicular to the table, you must tram or align the spindle with the table to ensure the spindle is exactly 90° to the table. this procedure involves...
Page 58 - Wiring Safety Instructions
-56- Model G0747/G0748 (Mfg. Since 8/12) SHOCK HAZARD. Working on wiring that is con-nected to a power source is extremely dangerous. Touching electrified parts will result in personal injury including but not limited to severe burns, electrocution, or death. Disconnect the power from the machine be...
Page 59 - MOTOR
Model G0747/G0748 (Mfg. Since 8/12) -57- READ ELECTRICAL SAFETY ON PAGE 56! G0747 Wiring Diagram Hot Hot Hot Ground FRONT SPINDLE SWITCH MOTOR 220 VAC 3-Phase NEMA 15-15 Plug (As Recommended) W Z G X Ground R R T T S S 6 5 3 2 4 1 6 5 3 2 4 1 Ground 1 6 5 3 2 4 1V 2V 1U 2U 1W 2W
Page 62 - Main Parts List
-60- Model G0747/G0748 (Mfg. Since 8/12) Main Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 P07470001 QUILL HOUSING ADJUSTMENT GEAR 71 P07470071 KNEE PLUG 2 P07470002 RAM ADAPTER 74 PN13 HEX NUT 1/2-13 4 P07470004 LIFTING EYE BOLT 28MM DIA M10-1.5 X 35 75 PK34M KEY 5 X 5 X 20 6 P0747000...
Page 64 - Downfeed System
-62- Model G0747/G0748 (Mfg. Since 8/12) Downfeed System 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 327 328 329 331 332 333 334 335 336 337 338 340 341 342 343 344 493 494 495 347 348 349 350 351 352 355 356 357 359 360 361 362 363 364 366 367...
Page 65 - Downfeed System Parts List
Model G0747/G0748 (Mfg. Since 8/12) -63- Downfeed System Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 301 PS31 PHLP HD SCR 10-24 X 1-3/4 362 PK52M KEY 3 X 3 X 15 302 P07470302 BEVEL PINION FLAT WASHER 363 P07470363 FEED GEAR SHIFT CRANK 303 P07470303 FEED BEVEL PINION 364 P07470364 CLUST...
Page 73 - Accessories
Model G0747/G0748 (Mfg. Since 8/12) -71- Accessories 801 802 803 804 805 REF PART # DESCRIPTION REF PART # DESCRIPTION 801 P07470801 BOTTLE FOR OIL 804 PSDP2 PHILLIPS SCREWDRIVER #2 802 PWR1719C WRENCH 17 X 19MM CLOSED ENDS 805 P07470805 TOOLBOX 803 PSDF2 STANDARD SCREWDRIVER #2
Page 74 - G0747 Machine Labels & Cosmetics
-72- Model G0747/G0748 (Mfg. Since 8/12) G0747 Machine Labels & Cosmetics Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes off or becomes unreadable, the owner of this machine MUST replace it in the original location before resuming operations. F...
Page 75 - G0748 Machine Labels & Cosmetics
Model G0747/G0748 (Mfg. Since 8/12) -73- G0748 Machine Labels & Cosmetics 901 903 904 904 905 906 907 908 909 910 911 912 REF PART # DESCRIPTION REF PART # DESCRIPTION 901 P07480901 MODEL NUMBER LABEL 908 PLABEL-52C 220V DISCONNECT LABEL 903 H4609 SMALL OBLONG GRIZZLY NAMEPLATE 909 PLABEL-55C EN...
Page 77 - WARRANTY CARD
C U T A LO N G D O T T E D LI N E Name _____________________________________________________________________________ Street _____________________________________________________________________________City _______________________ State _________________________ Zip _____________________Phone # _____...
