MODEL G0766 22" X 42" VARIABLE-SPEED WOOD LATHE OWNER'S MANUAL (For models manufactured since 07/15) COPYRIGHT © MARCH, 2015 BY GRIZZLY INDUSTRIAL, INC., REVISED OCTOBER, 2015 (MN) WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #MN17299 PRINTED IN CHINA V2.09.
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. The owner of this machine/tool is solely responsible for its safe use.
Table of Contents INTRODUCTION................................................ 2 Contact Info.................................................... 2 Manual Accuracy............................................ 2 Identification.................................................... 3 Controls & Components.................................. 4 Glossary Of Terms.......................................... 5 SECTION 1: SAFETY........................................ 8 Safety Instructions for Machinery...................
INTRODUCTION Contact Info Manual Accuracy We stand behind our machines! If you have questions or need help, contact us with the information below. Before contacting, make sure you get the serial number and manufacture date from the machine ID label. This will help us help you faster. We are proud to provide a high-quality owner’s manual with your new machine! Grizzly Technical Support 1815 W. Battlefield Springfield, MO 65807 Phone: (570) 546-9663 Email: techsupport@grizzly.
Identification Become familiar with the names and locations of the controls and features shown below to better understand the instructions in this manual.
Controls & Components I H J G To reduce your risk of serious injury, read this entire manual BEFORE using machine. Refer to Figures 1–3 and the following descriptions to become familiar with the basic controls of this machine. A Figure 2. Tailstock controls. G. Tailstock Lock Lever: Secures tailstock in position along bed. H. Tailstock Handwheel: Moves quill toward or away from spindle. B I. Quill Lock Handle: Secures quill in position. J. Quill: Holds centers or tooling.
Glossary Of Terms The following is a list of common definitions, terms and phrases used throughout this manual as they relate to this wood lathe and turning in general. Become familiar with these terms for assembling, adjusting or operating this machine. Your safety is VERY important to us at Grizzly! Bed: The long, rail-like metal base to which the tailstock, tool base, and headstock are attached. Chuck: A mechanical device that attaches to the spindle and holds the workpiece.
MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0766 22" X 42" VARIABLE-SPEED WOOD LATHE Product Dimensions: Weight.............................................................................................................................................................. 496 lbs. Width (side-to-side) x Depth (front-to-back) x Height..................................................................... 81 x 23 x 49-1/2 in.
Spindle Information Spindle Taper............................................................................................................................................ MT#2 Spindle Thread Size..................................................................................................................... 1-1/4" x 8 TPI Spindle Thread Direction.................................................................................................................. Right Hand Spindle Bore...................
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 importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
WEARING PROPER APPAREL. Do not wear clothing, apparel or jewelry that can become entangled in moving parts. Always tie back or cover long hair. Wear non-slip footwear to reduce risk of slipping and losing control or accidentally contacting cutting tool or moving parts. HAZARDOUS DUST. Dust created by machinery operations may cause cancer, birth defects, or long-term respiratory damage. Be aware of dust hazards associated with each workpiece material.
Additional Safety for Wood Lathes Serious injury or death can occur from getting entangled in, crushed between, or struck by rotating parts on a lathe! Rotating workpieces can come loose and strike operator or bystanders with deadly force if they are improperly secured, rotated too fast, or are not strong enough for the rotational forces required for turning. Improper tool setup or usage can cause tool kickback or grabbing, resulting in impact injury or entanglement.
SECTION 2: POWER SUPPLY Availability Circuit Information Before installing the machine, consider the availability 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 minimize the risk of electrocution, fire, or equipment damage, installation work and electrical wiring must be done by an electrician or qualified service personnel in accordance with all applicable codes and standards.
Grounding Requirements This machine MUST be grounded. In the event of certain malfunctions or breakdowns, grounding reduces the risk of electric shock by providing a path of least resistance for electric current. This machine is equipped with a power cord that has an equipment-grounding wire and a grounding plug. Only insert plug into a matching receptacle (outlet) that is properly installed and grounded in accordance with all local codes and ordinances.
SECTION 3: SETUP Needed for Setup This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine! Wear safety glasses during the entire setup process! HEAVY LIFT! Straining or crushing injury may occur from improperly lifting machine or some of its parts. To reduce this risk, get help from other people and use a forklift (or other lifting equipment) rated for weight of this machine.
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. B. C. D. E. F. G. H. I. J. Stand Legs.................................................. 2 Live Center MT#2........................................ 1 Spur Center MT#2.........................
Cleanup 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 cleaning your machine. The time you spend doing this now will give you a better appreciation for the proper care of your machine's unpainted surfaces.
Site Considerations Weight Load Physical Environment Refer to the Machine Data Sheet for the weight of your machine. Make sure that the surface upon which the machine is placed will bear the weight of the machine, additional equipment that may be installed on the machine, and the heaviest workpiece that will be used. Additionally, consider the weight of the operator and any dynamic loading that may occur when operating the machine.
Anchoring to Floor Number of Mounting Holes............................. 4 Diameter of Mounting Hardware.................. 1 ⁄ 2" Assembly To assemble lathe: 1. Anchoring machinery to the floor prevents tipping or shifting and reduces vibration that may occur during operation, resulting in a machine that runs slightly quieter and feels more solid. Position stand legs upright approximately 58" apart, and get them reasonably aligned (see Figure 11).
4. 5. If bolting lathe to floor, skip to Step 7. Otherwise, move tailstock, tool rest assembly, and headstock to one end of lathe bed way (refer to Operations, beginning on Page 2020). 7. Place level on lathe bed and make necessary adjustments so bed is level from side-to-side and front-to-back. — If you are using machine feet, adjust top and bottom hex nuts on each leg to level bed; then tighten hex nuts to secure these adjustments.
Test Run 5. Verify machine is operating correctly by turning spindle direction switch to "R" position, then slowly turn speed control knob to right. Once assembly is complete, test run the machine to ensure it is properly connected to power and safety components are functioning correctly. — When operating correctly, machine runs smoothly with little or no vibration or rubbing noises.
SECTION 4: OPERATIONS Operation Overview The purpose of this overview is to provide the novice 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 to understand. Due to the generic nature of this overview, it is not intended to be an instructional guide.
Workpiece Inspection Adjusting Headstock Some workpieces are not safe to turn or may require modification before they are safe to turn. Before turning, inspect all workpieces for the following: The Model G0766 headstock is equipped with a cam-action clamping system to secure it to the lathe bed. When the lever is tightened, a locking plate lifts up underneath the bed and secures the tailstock in place. The headstock can be positioned anywhere along the lathe bed.
Tool Rest Adjusting Tailstock Adjusting Tool Rest The tailstock adjusts in the same manner as the headstock. The tool rest assembly consists of two components: the tool rest base (or banjo) and the tool rest. The tool rest base moves forward/backward and along the length of the lathe bed. The tool rest rotates and moves up and down in the tool rest base. Locks for both components allow you to secure the tool rest in position as needed after making these adjustments.
To position tool rest forward/backward and along the length of the bed: 1. 2. Loosen tool rest base lock lever and move tool rest assembly to desired position on lathe bed, as shown in Figure 18. Note: The large clamping hex nut underneath the tool rest base will require occasional adjusting to ensure proper clamping pressure of the tool rest assembly to the bed. Turn this hex nut in small increments to fine tune the clamping pressure as needed.
Headstock Center Installing/Removing Headstock Center 4. Make sure center is securely installed by attempting to pull it out by hand—a properly installed center will not pull out easily. Removing Headstock Center The included spur center installs in the headstock spindle with an MT#2 tapered fit. 1. DISCONNECT MACHINE FROM POWER! 2. Hold a clean rag under spindle or wear leather glove to catch center when you remove it. 3.
Installing/Removing Tailstock Center 5. Make sure center of quill lock handle is aligned with quill keyway to ensure tailstock center and quill will not freely rotate under load (see Figure 22). The included live center installs into the tailstock quill with an MT#2 tapered fit. Quill Lock Handle Installing Tailstock Center 1. Loosen quill lock handle, and rotate handwheel until quill extends about 1", as shown in Figure 21. Handwheel Quill Keyway Quill Lock Handle Figure 22.
Headstock Faceplate Installing Faceplate To install faceplate: 1. DISCONNECT MACHINE FROM POWER! 2. Insert indexing pin into an indexing hole and rotate spindle until pin engages to prevent spindle from turning while you tighten faceplate, as shown in Figure 23. Faceplate Set Screw (1 of 2) Changing Speed Ranges Changing Speed Ranges The Model G0766 pulley belt configurations provide two speed ranges (see Figure 24).
5. Always choose correct spindle speed for an operation. Using wrong speed may lead to workpiece being thrown at high speed, causing fatal or severe impact injuries. Reach into belt access cavity and roll belt onto desired set of pulleys, as shown in Figure 28. Spindle To change speed ranges: A = High Range 330-3200 RPM 1. DISCONNECT MACHINE FROM POWER! B = Low Range 100-1200 RPM 2. Open front belt access cover, as shown in Figure 26. A B Motor Figure 28. Speed range belt positions. 6.
Spindle Turning Indexing Spindle Turning Indexing on a lathe is typically used for workpiece layout and other auxiliary operations that require equal distances around the workpiece circumference, such as clock faces or inlays. Spindle turning is the operation performed when a workpiece is mounted between the headstock and the tailstock, as shown in Figure 32.
2. Make a center mark by using a wood mallet and tapping point of spur center into center of workpiece on both ends. 3. Using a 1⁄4" drill bit, drill a 1⁄4" deep hole at center mark on end of the workpiece to be mounted on headstock spur center. 4. To help embed spur center into workpiece, cut 1⁄8" deep saw kerfs in headstock end of workpiece along diagonal lines marked in Step 1. 5.
Spindle Turning Tips: When turning the lathe ON, stand away from the path of the spinning workpiece until the spindle reaches full speed and you can verify that the workpiece will not come loose. • • Use the slowest speed when starting or stopping the lathe. • Select the right speed for the size of workpiece that you are turning (refer to Figure 25 on Page 26). • Keep the turning tool on the tool rest the ENTIRE time that it is in contact with the workpiece.
NOTICE Only use screws with non-tapered heads (see Figure 38) to attach faceplate to the workpiece. Screws with tapered heads can split faceplate or snap off during operation. Correct 1. 2. Locate and mark center of workpiece and backing block. 3. Drill a 1⁄4" hole through center of backing block. 4. Look through hole in backing block to line up center with workpiece and glue and clamp backing block to workpiece.
To outboard turn: 1. DISCONNECT MACHINE FROM POWER! 2. Remove tailstock and tool base from machine by removing hex nuts and clamp washers located underneath assemblies, then lifting them from lathe bed. 3. Loosen headstock, then move it all the way to tail end of lathe bed, as shown in Figure 39. Sanding/Finishing After the turning operations are complete, the workpiece can be sanded and finished before removing it from the lathe, as shown in Figure 40. Figure 40. Typical sanding operation.
Selecting Turning Tools • Lathe tools come in a variety of shapes and sizes, and usually fall into five major categories. • Scrapers—Typically used where access for other tools is limited, such as hollowing operations. This is a flat, double-ground tool that comes in a variety of profiles (round nose, spear point, square nose, etc.) to match many different contours. Gouges—Mainly used for rough cutting, detail cutting, and cove profiles.
ACCESSORIES SECTION 5: 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. Swan Neck D3788—Shop Fox 5-pc. Lathe Chisel Set With massive high speed steel blades and long ash handles, this set includes a 1" roughing gouge, 3 ⁄ 8" straight chisel, swan neck hollowing tool, 3 ⁄ 8" spindle gouge, and 1⁄ 8" parting tool.
T21771—Woodturning : A Foundation Course Designed to improve your turning skills, this DVD provides basic turning techniques and practices in detailed step-by-step demonstrations you can follow along with. Topics include suitable workpiece and tool selection, copy turning, turning between centers of faceplate, sanding and fine finishing, and maintaining and edge on your tools.
H7940—3-pc. Lathe Scraper Set This set is ideal for bowl turning and detail work. Each chisel measures roughly 16" long with 10" ash handles and high speed steel blades. Set includes one round, one curved, and one 90° corner chisel. Figure 52. Model H7940 3 Pc. Scraper Set. G1069—Live Center Set A blend of quality and convenience, this Live Center Set offers seven interchangeable tips. High quality needle bearings prolong tool life and special tool steel body and tips are precisionground. Supplied in box.
SECTION 6: MAINTENANCE To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, maintenance, or service. Schedule For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section. Ongoing: • Loose faceplate or mounting bolts. • Damaged center or tooling. • Worn or damaged wires. • Loose machine components. Any other unsafe condition. • Daily: • Clean off dust buildup.
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. Note: Please gather the serial number and manufacture date of your machine before calling. Troubleshooting Motor & Electrical Symptom Possible Cause Machine does not start or a breaker trips. 1. Emergency stop button depressed/at fault. 2. 3. 4. 5. 6. 7. 8. 9.
Wood Lathe Operation Symptom Possible Cause Possible Solution Bad surface finish. 1. Spindle speed is wrong. 2. Dull tooling or wrong tool selection. 1. Adjust for appropriate spindle speed. 2. Sharpen tooling or select a better tool for intended operation. 3. Adjust tool rest so tool is even with spindle centerline. 4. Replace belts. 3. Tool height is not at spindle centerline. 4. Belts are bad. Excessive vibration upon startup (when workpiece is installed). 1. Workpiece is mounted incorrectly. 2.
Changing Belt Changing Belt To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, maintenance, or service. To change belt: 1. DISCONNECT MACHINE FROM POWER! 2. Open front belt access cover (see Figure 56). 4. Use belt tension lever (see Figure 57) to lift motor assembly all the way up, then re-tighten motor tension lock handle—this will hold motor in place while you change belt position. 5.
machine SECTION 8: WIRING These pages are current at the time of printing. However, in the spirit of improvement, we may make changes to the electrical systems of future machines. Compare the manufacture date of your machine to the one stated in this manual, and study this section carefully. If there are differences between your machine and what is shown in this section, call Technical Support at (570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine.
Wiring Diagram Hot Hot 220 VAC Single Phase 6-15 Plug Ground R S T L1 L2 L3 POWER INVERTER DELTA VFD022M21A M0 M1 M2 M3 M4 M5 AFM +10V GND M01 GND AC1 AVI MCM RPM Sensor RB RA RC U V W Brake T1 T2 T3 B1 B2 GND GND RPM Readout Board GND Power Inverter Box (Viewed from Rear) 080307 Spindle Direction Switch KEDU ZH-A (Both sides shown) GND W2 U2 9 11 12 10 5 7 8 6 1 3 4 2 V2 Speed Control Potentiometer WX110(010) 10K±5% U1 V1 W1 MOTOR 3HP 240V (Viewed from Rear) -42- READ
Wiring Components Figure 59. Inverter box and motor box locations. Figure 60. RPM readout display board and control panel wiring. Model G0766 (Mfd.
SECTION 9: PARTS Main Breakdown 89 10 9 15 16 18 17 20 19 23 21 2 50 5 13 14 86 30 51 49 31 1 109 6 7 8 88 88 47 44 48 1-2 1-3 1-4 1-5 1-6 1-12 1-11 1-10 1-7 32 33 43 34 45 96 97 1-1 28 29 12 4 27 24 11 3 26 25 36 85 46 41 69 70 84 108 67 68 71 35 37 40 41 83 39 65 74 73 82 72 64 75 74 81 76 1-8 1-9 66 77 78 58 53 80 56 55V2 54 87 79V2 53 57 59 52V2 60 91 61 62 63 92 93 94 90 95 Please Note: We do our best to stock replacement par
Main Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 39 40 41 43 44 45 MOTOR 3HP 240V 3-PH MOTOR FAN COVER MOTOR FAN TAP SCREW M4-.7 X 18 MOTOR TERMINAL BOX COVER PHLP HD SCR M4-.7 X 20 MOTOR TERMINAL STRAIN RELIEF PG13.5 TYPE-3 MOTOR TERMINAL BOX BALL BEARING 6205ZZ (FRONT) BALL BEARING 6204ZZ (REAR) FLAT WASHER 4MM PHLP HD SCR M4-.
Labels HAZARD! Disconnect power before adjustments, maintenance, or service. Motor WARNING! 5005 2005 RAL when ine. mach C (1/8/14) 109 E 151 ES E RAL K C or TWORal. If E 3005 S AR . THI approv L, INCANGE out RIA om. ly.
WARRANTY CARD Name _____________________________________________________________________________ Street _____________________________________________________________________________ City _______________________ State _________________________ Zip _____________________ Phone # ____________________ Email _________________________________________________ Model # ____________________ Order # _______________________ Serial # __________________ The following information is given on a voluntary basis.
FOLD ALONG DOTTED LINE Place Stamp Here GRIZZLY INDUSTRIAL, INC. P.O.
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.