Grizzly g0749, g0746 Removing Center from Tailstock, Mounting Workpiece Between Centers

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3.Use the quill handwheel to feed the quill out from the casting approximately 1”.

Note: The maximum quill travel is 4 34", but we do not recommend extending the quill more than 2" or stability and accuracy will be reduced.

4.insert the center into the tailstock quill.

5.seat the center firmly into the quill during workpiece installation by rotating the quill handwheel clockwise to apply pressure with the center engaged in the center hole in the workpiece.

Note: Only apply enough pressure with the tailstock quill to securely mount the work- piece between centers. Avoid overtightening the center against the workpiece, or it may become difficult to remove later, and it will result in excessive friction and heat, which may damage the workpiece and center.

Removing Center from Tailstock

to remove the center from the quill, hold onto it with a gloved hand or shop rag, then rotate the quill handwheel counterclockwise to draw the quill back into the casting until the center releases.

Mounting Workpiece Between Centers

1.disCoNNECt lathE FroM poWEr!

2.drill center holes in both ends of the work- piece.

3.install a dead center in the spindle with a lathe dog and a chuck, faceplate or drive plate, then install a live center or carbide- tipped dead center in the tailstock.

4.lubricate the workpiece center holes, then mount it between the centers and hold it in place with light pressure from the tailstock center.

5.seat the center firmly into the quill by rotating the quill handwheel clockwise to apply pres- sure against the workpiece (see example in figure below).

Figure 58. Example photo of a workpiece

mounted between the centers.

Note: Only apply enough pressure to securely mount the workpiece between centers. Avoid over-tightening the center against the workpiece, or it may become difficult to remove later. Also, over-tightening will result in excessive friction and heat, which may damage the workpiece or center.

Model G0746/G0749 (Mfg. Since 3/13)

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Image 47 Contents
GEAR-HEAD Lathe Page Table of Contents 117 113Contact Info IntroductionMachine Description Manual Accuracy Identification Controls Components Master Power SwitchTailstock CarriageEnd Gears Control Panel Safety Foot BrakeMachine Data Sheet Tailstock Info Construction Model G0749 16 X 40 Heavy Duty Lathe 13-3/4 12.75 qt Safety Instructions for Machinery SafetyPage Additional Safety for Metal Lathes Additional Chuck Safety Circuit Requirements for AvailabilityFull-Load Current Rating Grounding Instructions Correcting Phase PolarityTo correct the phase polarity of the incoming power supply Connection TypeUnpacking SetupNeeded for Setup PreparationPackaged Components Figure InventoryMain Components Figure Qty Basic steps for removing rust preventative CleanupBefore cleaning, gather the following Site Considerations To lift and move the lathe Lifting & PlacingHEAvy LifT Machine Base Concrete Anchoring to Floor LevelingAnchoring to Concrete Floors Location of headstock jack screws AssemblyAdding Coolant Lubricating Lathe Power ConnectionTo test run your machine To connect lathe to powerTest Run Test run consists of verifyingEmergency Lever FeedSpindle Break-In Recommended AdjustmentsFactory adjustments that should be verified Operation Overview OperationsChuck & Plate To install the camlock studsTo install the chuck Installation Removal DevicesChuck Installation Registration mark locations Registration MarksTo remove the chuck Chuck RemovalScroll Chuck Clamping To change the jaw set Changing Jaw SetMounting Workpiece Jaw ChuckFaceplate Drive PlatePositioning Tailstock Using QuillInstalling Tooling Tailstock To offset the tailstock Offsetting Tailstock To install tooling in the tailstock Removing ToolingTo align the tailstock to the spindle center- line Aligning Tailstock to Spindle CenterlineItems Needed Qty Dead Centers CentersMounting Center in Tailstock Live CentersMounting Dead Center in Spindle Removing Center from SpindleMounting Workpiece Between Centers Removing Center from TailstockTools Needed Qty To install and use the steady restSteady Rest Carriage & Slide Locks Follow RestTo set the compound rest at a certain angle To install a tool in the tool postCompound Rest Four-Way Tool Post Tool Needed QtyTop View Aligning Cutting Tool with Spindle CenterlineBelow are two common methods To align the cutting tool with the tailstock centerCross Slide Handwheel Micrometer StopManual Feed Carriage HandwheelDetermining Spindle Speed Setting Spindle SpeedSpindle Speed Configuration Example Power FeedPower Feed Controls Dial Selection Lever Setting Power Feed RateLeadscrew UP End Gears Primary ConfigurationSecondary Configuration Alternate ConfigurationTo configure end gears for threading 16 TPI End-Gear Configuration ExampleTo set levers and dials for 16 TPI ThreadingHeadstock Threading Controls Thread Dial Apron Threading ControlsThread dial chart Thread Dial ChartTo set levers and dials for 1.25 MP Pitch TurningHeadstock Pitch Turning Controls For exampleLeadscrew UP Biological & Poison Hazard Coolant SystemChip drawer Model G0746/G0749 Mfg. Since 3/13 Chip DrawerG0688-Tool Post Grinder AccessoriesH6095-Digital Readout DRO H7991-Mini Mag Base Indicator SetT10118-Tailstock Digital Readout Schedule MaintenanceCleaning/Protecting Headstock LubricationLubrication Frequency To change the headstock oil Quick-Change GearboxLongitudinal Leadscrew ApronOne-Shot Oiler Ball Oilers Ball OilersHandling & Care Hazards Coolant System ServiceTo add coolant Adding CoolantChanging Coolant See Hazards onBringing Lathe Out of Storage Machine StoragePreparing Lathe for Storage Motor & Electrical ServiceTroubleshooting Symptom Possible Cause Possible SolutionLathe Operation Symptom Possible Cause Possible Solution Cross Slide Backlash AdjustmentCompound Rest Cross Slide Gib Leadscrew End-Play AdjustmentGib Adjustment To adjust the cross slide gibSaddle Gib Compound Slide GibTo tension the V-Belts To adjust the saddle slide gibBelts Tensioning V-BeltsReplacing V-Belts Adjusting Brake Brake & SwitchGap Removal Gap Insert Removal InstallationReplacing Brake Gap Installation Wiring Safety Instructions WiringElectrical Cabinet & Motors Circuit Diagram Control Rod PartsControl Rod & Brake Description Control Rod & Brake Parts ListBody G0746-49 Bed & Body Parts List Gears Description Headstock Gears Parts ListFeed Direction Control Left Spindle Speed HeadstockControls Description Headstock Controls Parts ListChange Quick-Change Gearbox Parts List PR12M EXT Retaining Ring 35MM 100 Model G0746/G0749 Mfg. Since 3/13 Saddle Saddle Parts List REF Description Slides104 Model G0746/G0749 Mfg. Since 3/13 ApronApron Parts List PCAP26M CAP Screw M6-1 X Model G0746/G0749 Mfg. Since 3/13 107 Tailstock Leadscrew 1601 1603 1611 1604 1605 1608 1602 1606 1607 1609 1610 Electrical CabinetAccessories Front Machine Labels Rear Machine Labels Threading AppendixDiametral & Modular Pitch Chart Comments Warranty CardBOX BELLINGHAM, WA Grizzly INDUSTRIAL, INCWarranty & Returns