Grizzly Industrial G0765 - Manual

-4- Model G0765 (Mfd. Since 5/15) Controls & Components Refer to Figures 2–6 and the following descrip- tions to become familiar with the basic controls of this lathe. To reduce your risk of serious injury, read this entire manual BEFORE using machine. Control Panel Figure 2. Control panel. B A ...

-6- Model G0765 (Mfd. Since 5/15) The information contained herein is deemed accurate as of 7/14/2015 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 G0765 MACHIN...

-8- Model G0765 (Mfd. Since 5/15) 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 always dis...

-10- Model G0765 (Mfd. Since 5/15) Additional Safety for Metal Lathes CLOTHING, JEWELRY & LONG HAIR. Tie back long hair, remove jewelry, and do not wear loose clothing or gloves. These can easily get caught on rotating parts and pull you into lathe. ROTATING PARTS. Always keep hands and body at ...

Model G0765 (Mfd. Since 5/15) -11- Additional Chuck Safety ENTANGLEMENT. Entanglement with a rotat-ing chuck can lead to death, amputation, broken bones, or other serious injury. Never attempt to slow or stop the lathe chuck by hand, and always roll up long sleeves, tie back long hair, and remove an...

-12- Model G0765 (Mfd. Since 5/15) 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 minimize t...

-14- Model G0765 (Mfd. Since 5/15) SECTION 3: SETUP The list below outlines the basic process of pre-paring your machine for operation. Specific steps are covered later in this section. The typical preparation process is as follows: 1. Unpack lathe and inventory contents of box/ crate. 2. Clean lath...

Model G0765 (Mfd. Since 5/15) -15- 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, repl...

-16- Model G0765 (Mfd. Since 5/15) 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 cleanin...

Model G0765 (Mfd. Since 5/15) -17- Site Considerations Figure 13. Minimum working clearances. Lathe = Electrical Connection Illustration Not To Scale Keep Workpiece Loading Area Unobstructed 30 1 / 2 " 12 1 / 2 " Weight Load Refer to the Machine Data Sheet for the weight of your machine. Mak...

-18- Model G0765 (Mfd. Since 5/15) With the help of another person, lift the machine to a suitable location. Lifting & Placing HEAVY LIFT! Straining or crushing injury may occur from improperly lifting machine or some of its parts. To reduce this risk, get help from another person. Power Connect...

Model G0765 (Mfd. Since 5/15) -19- Test Run Once assembly is complete, test run the machine to ensure it is properly connected to power and safety components are functioning properly. If you find an unusual problem during the test run, immediately stop the machine, disconnect it from power, and fix ...

Model G0765 (Mfd. Since 5/15) -21- To perform the spindle break-in: 1. Successfully complete the Test Run proce- dure beginning on Page 21. 2. Set spindle direction switch to "F" (forward), ensure range lever is in LOW, and operate lathe for 10 minutes at 100 RPM. 3. Operate lathe at 1000 RP...

-22- Model G0765 (Mfd. Since 5/15) SECTION 4: OPERATIONS Operation Overview To complete a typical operation, the operator does the following: 1. Puts on safety glasses, rolls up sleeves, removes jewelry, and secures any clothing or hair that could get entangled in moving parts. 2. Examines workpiece...

-24- Model G0765 (Mfd. Since 5/15) Chuck Installation 4. Insert chuck screws through mounting holes in spindle backplate, as shown in Figure 20. Make sure chuck seats firmly and evenly against backplate shoulder. 5. Use a lock washer and hex nut on each chuck screw to secure chuck (see Figure 21). T...

Model G0765 (Mfd. Since 5/15) -25- This 3-jaw, scroll-type chuck has an internal scroll-gear that moves all jaws in unison when adjusted with the chuck key. This chuck holds cylindrical parts on-center with the axis of spindle rotation and can be rotated at high speeds if the workpiece is properly c...

Model G0765 (Mfd. Since 5/15) -27- Figure 26. Example of a workpiece clamped in a faceplate. Faceplate Non-Cylindrical Workpiece Clamp To mount non-concentric workpiece to face- plate: 1. DISCONNECT MACHINE FROM POWER! 2. Use appropriate device to protect ways (refer to Installation & Removal De...

-28- Model G0765 (Mfd. Since 5/15) Tailstock The tailstock is typically used to support long workpieces at the side opposite the spindle, using a live or dead center. It can also hold a tapered drill bit (or a drill chuck with a regular drill bit) for boring holes. Unlike boring done with a drill pr...

-32- Model G0765 (Mfd. Since 5/15) Figure 36 shows the MT#2 and MT#3 dead cen-ters included with the lathe. Centers Figure 36. Dead centers. MT#2 Dead Center MT#3 Dead Center Figure 37. Example of using dead center with a faceplate and lathe dog. Dead Center Lathe Dog Mounting Dead Center in Spindle...

Model G0765 (Mfd. Since 5/15) -33- To mount center in tailstock: 1. DISCONNECT MACHINE FROM POWER! 2. Thoroughly clean and dry tapered mating surfaces of tailstock quill bore and center, making sure no lint or oil remains on tapers. Mounting Center in Tailstock The included MT#2 dead center or a liv...

-34- Model G0765 (Mfd. Since 5/15) Steady Rest Tools Needed for Installation /Removal Qty Open-End Wrench 14mm .................................. 1Open-End Wrench 16mm .................................. 1 The steady rest supports long shafts and can be mounted anywhere along the length of the bedway...

Model G0765 (Mfd. Since 5/15) -35- The compound rest handwheel has an indirect-read graduated scale. This means that the dis-tance shown on the scale represents the actual distance the cutting tool moves. The base of the compound rest has another graduated scale used for setting the cutting tool to ...

Model G0765 (Mfd. Since 5/15) -37- The cutting tool can be manually fed into the workpiece using the carriage, cross slide, and compound rest handwheels shown below. Carriage Handwheel Graduated DialIncrements ................................... 0.01" (0.25mm)One Full Revolution ...................

-38- Model G0765 (Mfd. Since 5/15) Setting Spindle Speed Range The high/low range lever shown in Figure 47, is used to select one of the two spindle speed ranges. When the lever is moved to the right, as shown in Figure 47, the low spindle speed range (100–1000 RPM) is selected. When the lever is mo...

Model G0765 (Mfd. Since 5/15) -39- Power Feed The carriage has power feed options for either threading or non-threading operations. However, this subsection only covers using the power feed option for non-threading operations. To learn how to power the carriage for threading operations, refer to Thr...

-40- Model G0765 (Mfd. Since 5/15) Follow the example below to better understand how to set the lathe power feed. Tools Needed: Hex Wrenches 4 & 5mm .............................. 1 EaOpen-End Wrenches 13 & 14mm ................. 1 Ea To set power feed for 0.04 in. /rev.: 1. DISCONNECT LATHE...

Model G0765 (Mfd. Since 5/15) -41- The end gears must be correctly setup for power feed and threading. Use the photo below to identify the A, B, C, and D change gears, which are also referenced on the headstock feed rate gear chart. End Gears Primary Threading Configuration This threading configurat...

-42- Model G0765 (Mfd. Since 5/15) End Gear Configuration Example Follow the example below to better understand how to configure the end gears for inch threading. Tools Needed Qty Hex Wrench 4 & 5mm .................................. 1 EaOpen-End Wrenches 13 & 14mm ................. 1 Ea To ...

-44- Model G0765 (Mfd. Since 5/15) The following subsections describe how to use the threading controls and charts to set up the lathe for a threading operation. If you are unfamil-iar with how to cut threads on a lathe, we strongly recommend that you read books, review industry trade magazines, or ...

Model G0765 (Mfd. Since 5/15) -45- Thread Dial The numbers on the thread dial ( Figure 65) are used with the thread dial chart to show when to engage the half nut during inch threading. Note: The thread dial is not used for metric threading. You must leave the half nut engaged from the beginning unt...

Model G0765 (Mfd. Since 5/15) -47- SECTION 5: ACCESSORIES ACCESSORIES order online at www.grizzly.com or call 1-800-523-4777 Installing unapproved accessories may cause machine to malfunction, resulting in serious personal injury or machine damage. To reduce this risk, only install accessories recom...

-48- Model G0765 (Mfd. Since 5/15) SECTION 6: MAINTENANCE Schedule 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 the problem before continuing operations: • Loose mounting bolts or fastener...

Model G0765 (Mfd. Since 5/15) -49- Lubrication NOTICE The recommended lubrication is based on light-to-medium usage. Keeping in mind that lubrication helps to protect the value and operation of the lathe, these lubrication tasks may need to be performed more fre- quently than recommended here, depen...

Model G0765 (Mfd. Since 5/15) -51- Change Gear Bushing Grease Type ..................... White Lithium NLGI#2 Frequency .............................................. AnnuallyAmount .................................................Thin Coat The plastic end gears do not need to be lubri-cated. Howeve...

-52- Model G0765 (Mfd. Since 5/15) SECTION 7: SERVICE Troubleshooting Symptom Possible Cause Possible Solution Machine does not start or a circuit breaker trips. 1. Emergency stop button engaged or at fault. 2. Variable speed dial in OFF position or at fault. 3. Spindle direction switch turned to &#...

Model G0765 (Mfd. Since 5/15) -53- Lathe Operation Symptom Possible Cause Possible Solution Bad surface finish. 1. Wrong spindle speed or feed rate.2. Dull tooling or wrong tool selection. 3. Tool height not at spindle centerline. 4. Too much play in gibs. 1. Adjust for appropriate spindle speed and...

-54- Model G0765 (Mfd. Since 5/15) Backlash Adjustment Backlash is the amount of free play felt while changing rotation directions with the handwheel. This can be adjusted on the cross slide leadscrew. Before beginning any adjustment, make sure all associated components are cleaned and lubri-cated a...

Model G0765 (Mfd. Since 5/15) -55- Gib Adjustment The goal of adjusting the gib screws is to remove sloppiness or "play" from the ways without over-adjusting them to the point where they become stiff and difficult to move. In general, loose gibs cause poor finishes and tool chatter; however,...

-56- Model G0765 (Mfd. Since 5/15) The rigidity of the half nut engagement is adjusted by tightening or loosening the half nut gib screws. Adjust the half nut if it feels too loose or too tight when being engaged. Movement that is too stiff will accelerate wear. Movement that is too slop-py will pro...

Model G0765 (Mfd. Since 5/15) -57- Brush Replacement This lathe is equipped with a universal motor that uses two carbon brushes to transmit elec-trical current inside the motor. These brushes are considered to be regular "wear items" or "consumables" that will need to be replaced dur...

-58- Model G0765 (Mfd. Since 5/15) Timing Belt Tension & Replacement The timing belt transfers power from the motor to the drive pulley (see Figure 89). Because the molded teeth in the belt fit together with matching teeth in the pulley, the timing belt will not slip unless the belt teeth become...

Model G0765 (Mfd. Since 5/15) -59- Replacing Timing Belt 1. DISCONNECT LATHE FROM POWER! 2. Remove end cover, rear motor cover, and electrical cabinet. 7. Slide off old timing belt and install the new one, making sure that belt teeth are seated together with pulley teeth (see Figure 93). Figure 91. ...

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 before servicing electrical com-ponents! MO...

Model G0765 (Mfd. Since 5/15) -61- READ ELECTRICAL SAFETY ON PAGE 62! 23 1 1 2 2 3 3 4 24 13 14 A1 Top of Control Panel Bottom of Control Panel Front of Control Panel KEDU KJD17B ON/OFF SWITCH 4WPLJ-2T DIGITAL READOUT J1 CON4 KEDU ZHA Left Side From Behind KEDU ZHA Right Side From Behind DIRECTION S...

-62- Model G0765 (Mfd. Since 5/15) READ ELECTRICAL SAFETY ON PAGE 62! Control Panel Wiring Photos Figure 96. Control panel wiring (top). Figure 94. G0765 wiring overview. Figure 97. Control panel wiring (front). Figure 95. Control panel wiring (bottom).

-70- Model G0765 (Mfd. Since 5/15) SECTION 10: APPENDIX Threading Charts Inch and metric thread charts for the Model G0765 are provided below for your reference. An inch thread chart is provided on the headstock, but a metric chart is not. TPI GEARS TPI GEARS A B C D A B C D 12 40 65 ⁄ 30 26 40 60 ⁄...

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