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This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this machine/tool. Save this document, refer to it often, and use it to instruct other operators. Failure to read, understand and follow the instructions in this manual may result in fire or serious personal injury—including amputation, electrocution, or death.
Before contacting, please get the serial number and manufacture date of your machine. This will help us help you faster. Manufacture date Grizzly Technical Support 1203 Lycoming Mall Circle Muncy, PA 17756 serial number Phone: (570) 546-9663 Email: techsupport@grizzly.com...
Front View Identification headstock Motor (see pages 5–6) X-Axis Ball handle slotted Work table X-Axis Ball handle power Feed limit switch X-Axis power Feed Knee Crank Mounting point (1 of 4) y-Axis Ball handle Knee Model G0747/G0748 (Mfg. Since 8/12)
Model G0747 Headstock Identification Belt tension Motor Adjustment lever high/low Motor lock range lever lever spindle Brake Belt housing spindle safety Cover switch spindle speed Auto-downfeed range selector rate selector Manual/power downfeed selector Auto-downfeed direction pin Coarse downfeed lever Fine downfeed handwheel Quill lock lever...
Model G0748 Headstock Identification Motor high range Variable speed indicator low range Variable speed indicator spindle Variable speed Brake handwheel spindle switch spindle speed range selector Auto-downfeed rate selector Manual/power Auto-downfeed downfeed selector direction pin Coarse Fine downfeed downfeed lever handwheel Quill lock lever...
MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0747 VERTICAL MILL - 16 SPEED Product Dimensions: Weight................................2,249 lbs. Width (side-to-side) x Depth (front-to-back) x Height............... 54 x 66-1/2 x 84-3/4 in. Footprint (Length x Width)..........................
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Main Specifications: Operation Info Spindle Travel.............................. 5 in. Max Distance Spindle to Column......................24-3/8 in. Max Distance Spindle to Table......................16-7/8 in. Longitudinal Table Travel (X-Axis)...................... 29-7/8 in. Cross Table Travel (Y-Axis)........................ 15-3/4 in. Vertical Table Travel (Z-Axis)........................16 in. Ram Travel..............................
MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0748 VERTICAL MILL - VARIABLE SPEED Product Dimensions: Weight................................2,315 lbs. Width (side-to-side) x Depth (front-to-back) x Height............... 54 x 66-1/2 x 84-3/4 in. Footprint (Length x Width)..........................
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Main Specifications: Operation Info Spindle Travel.............................. 5 in. Max Distance Spindle to Column......................24-3/8 in. Max Distance Spindle to Table......................16-7/8 in. Longitudinal Table Travel (X-Axis)...................... 29-7/8 in. Cross Table Travel (Y-Axis)........................ 15-3/4 in. Vertical Table Travel (Z-Axis)........................16 in. Ram Travel..............................
SECTION 1: SAFETy For your Own Safety, Read Instruction Manual before Operating This Machine The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words intended to convey the level of impor- tance of the safety messages.
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WEARING PROPER APPAREL. do not wear FORCING MACHINERy. do not force machine. clothing, apparel or jewelry that can become it will do the job safer and better at the rate for entangled in moving parts. Always tie back or which it was designed. cover long hair.
Additional Safety for Milling Machines UNDERSTANDING CONTROLS: the mill is a STOPPING SPINDLE: to reduce the risk of complex machine that presents severe cutting or hand injuries or entanglement hazards, do not amputation hazards if used incorrectly. Make sure attempt to stop the spindle with your hand or a you understand the use and operation of all con- tool.
SECTION 2: POWER SUPPLy Availability Circuit Requirements for 220V Before installing the machine, consider the avail- This machine is prewired to operate on a 220V power supply circuit that has a verified ground and ability and proximity of the required power supply circuit.
Grounding Instructions This machine MUST be grounded. In the event of certain malfunctions or breakdowns, grounding Serious injury could occur if you connect reduces the risk of electric shock by providing a the machine to power before completing the path of least resistance for electric current. setup process.
SECTION 3: SETUP Unpacking Needed for Setup Your machine was carefully packaged for safe the following are needed to complete the setup transportation. Remove the packaging materials process, but are not included with your machine. from around your machine and inspect it. If you discover any damage, please call us immediately For Lifting (Page 20) at (570) 546-9663 for advice.
Inventory The following is a list of items shipped with your machine. Before beginning setup, lay these items out and inventory them. If any non-proprietary parts are missing (e.g. a nut or a washer), we will gladly replace them; or for the sake of expediency, replacements can be obtained at your local hardware store.
Cleanup Gasoline or products with low flash points can The unpainted surfaces of your machine are explode or cause fire if coated with a heavy-duty rust preventative that used to clean machin- prevents corrosion during shipment and storage. ery. Avoid cleaning with This rust preventative works extremely well, but it these products.
Site Considerations Weight Load Physical Environment refer to the Machine Data Sheet for the weight the physical environment where the machine is of your machine. Make sure that the surface upon operated is important for safe operation and lon- which the machine is placed will bear the weight gevity of machine components.
Lifting & Placing Note: After re-positioning the ram and head- stock, make sure they are locked in place to prevent unexpected movement during lifting. Make sure the four turret lock bolts (two on either side of the ram, see Figure 6) are torqued to 47 ft/lbs.
Figure 7 for an example of a high precision level available from grizzly. Figure 9. Machine mount example. Figure 7. example of a precision level (Model h2683 shown).
Assembly using the five cap screws pre-threaded into the holes, install the front way cover as shown in Figure 12. Assembly of the small components of the mill consists of attaching the ball handles, knee crank, and the way covers. To assemble the mill: Cap screws remove the hex nuts from the X- and...
Test Run use the spindle switch to turn the mill ON. For Model G0747: turn the spindle switch to the FLOW (forward low) position, as shown in After all preparation steps have been completed, Figure 14. the machine and its safety features must be tested to ensure correct operation.
Power Feed Test Run Make sure the power feed direction knob is in the neutral (middle) position, turn the speed the mill comes with a power feed unit for X-axis dial counterclockwise to the lowest setting, table travel. proper operation of the limit switch then press the on button.
Spindle break-In Since the mill head has been moved around for shipping purposes, you will need to tram the spindle with the table to ensure a 90° alignment. Refer to the Tramming Spindle Complete the spindle bearing break-in pro- section on Page 54 for detailed instructions. cedure to prevent rapid wear and tear of spindle components once the mill is placed into operation.
Read books/magazines or get formal training before beginning any proj- ects. Regardless of the content in this sec- tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. -26- Model G0747/G0748 (Mfg. Since 8/12)
Table Movement index rings 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 along the X-axis with the Figure 17.
X-Axis Power Feed Identification A. Limit Switch. stops table movement when either of the switch side plungers are pressed the mill is equipped with a power feed unit for by the limit stops. X-axis table movement. refer to Figure 19 and the descriptions below to understand the func- b.
Head Movement X-Axis Power Feed Operation Tool Needed hex Wrench 8mm ..........1 the head tilts 45° forward or backward, and rotates 90° left or right (see Figures 20–21). To operate the X-axis power feed: loosen the X-axis table locks (refer to Figure 18 on Page 27 for locations).
Rotating Head Left/Right disConneCt Mill FroM poWer! The head is heavy. When tilting or rotating the head, get help to support the weight as loosen the four lock bolts shown in Figure 23. you use the controls. Tilting Head Forward/backward rotation Bolt disConneCt Mill FroM poWer! loosen the three tilt lock bolts shown in...
Ram Movement Always lock the ram firmly in place after moving it. Unexpected movement of the ram the ram travels forward or backward 24" and and head during operations could damage rotates 360° around the turret. the cutter or workpiece. Tool Needed Rotating Ram Wrench 19mm ............
Spindle Speed the procedures for setting the spindle speed for the Models g0747 and Model g0748 differ. use the appropriate section on the following pages for your mill when selecting the speed range. using the correct spindle speed is important for safe and satisfactory results, as well as maximiz- ing tool life.
Setting Model G0747 Spindle Speed Move the high-low range lever shown in Figure 28 to the high or low position. 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 high-low the spindle speed range, 2) positioning the V-belt, range...
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loosen the two motor lock levers, one on Note: As displayed in Figure 30, the Model each side of the head, then pull the belt ten- G0747 has two spindle speeds for each sion adjustment lever forward to release the V-belt position depending on the spindle V-belt tension.
Setting Model G0748 Spindle Speed the Model g0748 has variable spindle speeds For the Model G0748 ONLy, always make from 60 to 4200 rpM. setting the spindle speed sure that the spindle rotation has started involves 1) selecting the spindle speed range, and is at a constant speed before using and 2) using the variable-speed handwheel to the variable-speed handwheel to adjust the...
Spindle Downfeed When spindle rotation is reversed, either by changing the spindle speed range or by spindle downfeed movement on the mill is con- using the spindle direction switch, the direc- trolled by three mechanisms: 1) the coarse tion of spindle auto-downfeed will reverse. downfeed lever, 2) the fine downfeed handwheel, and 3) the auto-downfeed system.
Coarse Downfeed Make sure the quill lock lever is loose so that the quill can easily move. use the coarse downfeed lever to quickly move the spindle manually. rotate the coarse downfeed lever around the hub to control the depth of the spindle. To use the coarse downfeed: Fine Downfeed Make sure the spindle is completely stopped.
Auto-Downfeed position the auto-downfeed direction pin in the center of the handwheel for the spindle When using the auto-downfeed system, the spin- travel that is correct for your operation. if nec- dle will move in the direction you choose with the essary, rock the fine downfeed handwheel auto-downfeed direction pin.
Spindle brake ALWAyS start spindle rotation before using auto-downfeed to avoid the risk of gear After turning the spindle switch OFF, move the damage. brake lever to bring the spindle to a full stop (see Figures 39–40). 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.
Loading/Unloading With one hand holding the tool in place, insert the drawbar into the spindle from the top of Tooling the head, then thread it into the tool (see Figure 42). the mill is equipped with an r8 spindle taper and head of ⁄...
To reduce this risk, only install accessories recommended for this machine by Grizzly. NOTICE Refer to our website or latest catalog for additional recommended accessories.
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® H3789—G96 Gun Treatment 4.5 oz Spray ® Figure 48. Model g9299 10" yuasa-type rotary table. Figure 50. recommended products for protecting unpainted cast iron/steel machinery parts. www.grizzly.com 1-800-523-4777 order online at or call -42- Model G0747/G0748 (Mfg. Since 8/12)
SECTION 6: MAINTENANCE Daily, After Operations • disconnect the machine from power. To reduce risk of shock or • Vacuum/clean all chips and swarf from table, accidental startup, always slides, and base. disconnect machine from • Wipe down all unpainted or machined sur- power before adjustments, faces with a good quality rust preventative.
Lubrication Failure to follow reasonable lubrication practices as instructed in this manual for the mill has numerous moving metal-to-metal the mill could lead to premature failure of contacts that require regular and proper lubrica- the mill and will void the warranty. tion to ensure efficient and long-lasting operation, and to protect your investment.
Table Ways (One-Shot Oiler) Headstock Gearing oil type ..Model t23962 or iso 68 equivalent grease type ......nlgi 2 or equivalent oil Amount ....one pull of pump handle grease Amount ..two pumps of grease gun Check/Add Frequency ..4–8 hrs. of operation Check/Add Frequency ..
Ram Ways Table Elevation Leadscrew oil type ..Model t23962 or iso 68 equivalent grease type ......nlgi 2 or equivalent oil Amount ..........thin Coat grease Amount ........thin Coat Check/Add Frequency ..40 hrs. of operation Check/Add Frequency ..40 hrs. of operation Move the ram back and forth as necessary to elevate the table all the way up, then use mineral access the full length of the ways (see Figure 56),...
Power Feed Gears Brush a light coat of lubricant on the teeth of the bevel gear and the smaller drive gear grease type ......nlgi 2 or equivalent (see Figure 61). grease Amount ..two pumps of grease gun Check/Add Frequency ..160 hrs. of operation Brass Bevel gear Tool Needed Wrench 19mm ............
Machine Storage • loosen the belts to prevent them from stretch- ing during storage. post a reminder on the mill that the belts need to be re-tensioned before resuming operations. to avoid rust problems or corrosion damage, use the following information to protect your invest- •...
SECTION 7: SERVICE 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 manufacture date of your machine before calling. Troubleshooting Symptom Possible Cause...
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Symptom Possible Cause Possible Solution tool slips in collet. 1. Collet not fully drawn into spindle taper. 1. snug up drawbar to fully seat collet. 2. Wrong size collet. 2. use correct collet for tool shank diameter. 3. debris on mating surface of collet and 3.
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. table gib &...
Adjusting Leadscrew X-Axis Leadscrew backlash disConneCt Mill FroM poWer! backlash loosen the two cap screws on the X-axis leadscrew nut accessed from underneath the left side of the table (see Figure 65). leadscrew backlash is the amount of motion the leadscrew rotates before the attached device begins to move.
Cross Leadscrew backlash loosen the two cap screws on the face of the leadscrew nut shown in Figure 68. disConneCt Mill FroM poWer! 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.
Tramming Spindle Note: A precision-ground plate can be substi- tuted for the parallel blocks. Keep in mind that the farther the indicator point can be placed from the spindle axis, the more accurate the alignment After positioning the head at an angle and when measurements will be.
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to measure spindle alignment along the Note: Keep one of the rotation lock bolts X-axis, place the parallel block directly under just snug so the head does not move loosely the spindle and indicator across the length of while you adjust it. Remember to tighten the table, as illustrated in Figure 71.
Technical source. Support at (570) 546-9663. The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com. -56- Model G0747/G0748 (Mfg. Since 8/12)
Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here are available for purchase. Call (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability.
Main Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION P07470001 QUILL HOUSING ADJUSTMENT GEAR P07470071 KNEE PLUG P07470002 RAM ADAPTER PN13 HEX NUT 1/2-13 P07470004 LIFTING EYE BOLT 28MM DIA M10-1.5 X 35 PK34M KEY 5 X 5 X 20 P07470006 HEAD TILT ADJUSTING WORM PW01...
Downfeed System 307 308 302 303 304 305 306 481 482 348 349 384 385 376 377 386 387 406 407 -62- Model G0747/G0748 (Mfg. Since 8/12)
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Downfeed System Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION PS31 PHLP HD SCR 10-24 X 1-3/4 PK52M KEY 3 X 3 X 15 P07470302 BEVEL PINION FLAT WASHER P07470363 FEED GEAR SHIFT CRANK P07470303 FEED BEVEL PINION P07470364 CLUSTER GEAR SHIFT CRANK P07470304 FEED WORM GEAR SHAFT SLEEVE P07470366 CLUSTER GEAR COVER...
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Downfeed System Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION PRP42M ROLL PIN 3 X 20 P07470459 QUILL TRAVEL SCALE P07470418 CAM ROD SLEEVE ASSEMBLY PR06M EXT RETAINING RING 16MM PRP61M ROLL PIN 3 X 12 P07470461 QUILL TRAVEL STOP LOCK RING P07470420 COMPRESSION SPRING P07470462...
G0748 Headstock 501-1 501-5 501-4 501-2 501-3 -67- Model G0747/G0748 (Mfg. Since 8/12)
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G0748 Headstock Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION P07480501 MOTOR 3HP 220V 3-PH AEVF 112-4 P07480549 TAPERED KNOB 3/8-16 501-1 P07480501-1 MOTOR FAN COVER P07480550 BRAKE LEVER 501-2 P07480501-2 MOTOR FAN PN08 HEX NUT 3/8-16 501-3 P07480501-3 MOTOR JUNCTION BOX PCAP06M CAP SCREW M6-1 X 25 501-4 P6205ZZ...
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G0748 Headstock Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION P07480604 CHAIN PCAP01M CAP SCREW M6-1 X 16 P07480605 CHAIN MASTER LINK P07480612 BRASS SLEEVE P07480606 MASTER LINK PIN P07480613 SPEED CHANGE DIAL P07480607 WORM GEAR P07480614 SPEED CHANGE INDICATOR PLATE P07480608 BRASS SLEEVE PCAP26M...
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. For replacements, contact (800) 523-4777 or www.grizzly.com. -72-...
Would you recommend Grizzly Industrial to a friend? _____ Yes _____No Would you allow us to use your name as a reference for Grizzly customers in your area? Note: We never use names more than 3 times. _____ Yes _____No 10.
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FOLD ALONG DOTTED LINE Place Stamp Here GRIZZLY INDUSTRIAL, INC. P.O. BOX 2069 BELLINGHAM, WA 98227-2069 FOLD ALONG DOTTED LINE Send a Grizzly Catalog to a friend: Name_______________________________ Street_______________________________ City______________State______Zip______ TAPE ALONG EDGES--PLEASE DO NOT STAPLE...
WARRANTy & RETURNS Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance.
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