Grizzly g0746, g0749 owner manual Headstock Pitch Turning Controls, For example

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12 Fractional TPI: Use any opposing number pairs—1/3 or 2/4 on the thread dial (see example in Figure 95).

TPI

Dial Number

Thread Dial

1½,2½,3½,4½,

Position

 

3

5½,6½,9½,10½,

1,3 or 2,4

2

4

11½,13½

 

 

1

Figure 95. Example of opposing number groups

for cutting 12 thread TPI.

Important: Once a number has been selected, continue using that number or its odd/even counterpart.

For example:

If you use 1 during the first threading pass, then you must select 1 or 3 for all following passes.

If you use 2 during the first threading pass, then you must select 2 or 4 for all following passes.

14 or 34 Fractional TPI: Use position 1 on the thread dial (see example in Figure 96).

TPI

Dial Number

Thread Dial

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1¼,1¾,2¼,2¾,

Position

 

 

 

 

3

3¼,4¾,5¼,5¾,

1 Only

 

 

 

2

4

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 96. Example of 14 or 34 fractional TPI.

Pitch Turning

The following subsection describes how to set up the lathe for diametral or modular pitch turning. If you are unfamiliar with the process of turning pitches on a lathe, we strongly recommend that you read books, review industry trade magazines, or get formal training before attempting specific projects.

Headstock Pitch Turning Controls

The pitch turning charts on the headstock face display the settings for diametral and modular pitch turning, as shown in Figure 97.

Modular

Pitches

Diametral

Pitches

Figure 97. Location of modular and diametral

pitch charts.

Using the controls on the lathe, follow the exam- ple below to understand how to set up the lathe for the desired pitch turning operation.

To set levers and dials for 1.25 MP:

1.Configure the gears as instructed in Alternate Configuration on Page 55.

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

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Contents GEAR-HEAD Lathe Page Table of Contents 113 117Contact Info IntroductionMachine Description Manual Accuracy Identification Master Power Switch Controls ComponentsCarriage TailstockControl Panel Safety Foot Brake End GearsMachine Data Sheet Tailstock Info Construction Model G0749 16 X 40 Heavy Duty Lathe 13-3/4 12.75 qt Safety Safety Instructions for MachineryPage Additional Safety for Metal Lathes Additional Chuck Safety Circuit Requirements for AvailabilityFull-Load Current Rating Connection Type Correcting Phase PolarityTo correct the phase polarity of the incoming power supply Grounding InstructionsPreparation SetupNeeded for Setup UnpackingPackaged 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 Assembly Location of headstock jack screwsLubricating Lathe Power Connection Adding CoolantTest run consists of verifying To connect lathe to powerTest Run To test run your machineEmergency Feed LeverSpindle Break-In Recommended AdjustmentsFactory adjustments that should be verified Operations Operation OverviewTo install the camlock studs Chuck & PlateTo install the chuck Installation Removal DevicesChuck Installation Registration Marks Registration mark locationsTo remove the chuck Chuck RemovalScroll Chuck Clamping Changing Jaw Set To change the jaw setJaw Chuck Mounting WorkpieceDrive Plate FaceplateTailstock Using QuillInstalling Tooling Positioning TailstockRemoving Tooling Offsetting TailstockTo install tooling in the tailstock To offset the tailstockTo align the tailstock to the spindle center- line Aligning Tailstock to Spindle CenterlineItems Needed Qty Centers Dead CentersRemoving Center from Spindle Live CentersMounting Dead Center in Spindle Mounting Center in TailstockRemoving Center from Tailstock Mounting Workpiece Between CentersTools Needed Qty To install and use the steady restSteady Rest Follow Rest Carriage & Slide LocksTool Needed Qty To install a tool in the tool postCompound Rest Four-Way Tool Post To set the compound rest at a certain angleTo align the cutting tool with the tailstock center Aligning Cutting Tool with Spindle CenterlineBelow are two common methods Top ViewCarriage Handwheel Micrometer StopManual Feed Cross Slide HandwheelDetermining Spindle Speed Setting Spindle SpeedSpindle Speed Power Feed Configuration ExamplePower Feed Controls Dial Selection Lever Setting Power Feed RateLeadscrew UP Alternate Configuration Primary ConfigurationSecondary Configuration End GearsEnd-Gear Configuration Example To configure end gears for threading 16 TPITo set levers and dials for 16 TPI ThreadingHeadstock Threading Controls Apron Threading Controls Thread DialThread Dial Chart Thread dial chartFor example Pitch TurningHeadstock Pitch Turning Controls To set levers and dials for 1.25 MPLeadscrew UP Coolant System Biological & Poison HazardChip Drawer Chip drawer Model G0746/G0749 Mfg. Since 3/13Accessories G0688-Tool Post GrinderH6095-Digital Readout DRO H7991-Mini Mag Base Indicator SetT10118-Tailstock Digital Readout Schedule MaintenanceCleaning/Protecting Headstock LubricationLubrication Frequency Quick-Change Gearbox To change the headstock oilLongitudinal Leadscrew ApronOne-Shot Oiler Ball Oilers Ball OilersHandling & Care Coolant System Service HazardsSee Hazards on Adding CoolantChanging Coolant To add coolantBringing Lathe Out of Storage Machine StoragePreparing Lathe for Storage Symptom Possible Cause Possible Solution ServiceTroubleshooting Motor & ElectricalLathe Operation Symptom Possible Cause Possible Solution Cross Slide Backlash AdjustmentCompound Rest To adjust the cross slide gib Leadscrew End-Play AdjustmentGib Adjustment Cross Slide GibCompound Slide Gib Saddle GibTensioning V-Belts To adjust the saddle slide gibBelts To tension the V-BeltsReplacing V-Belts Brake & Switch Adjusting BrakeGap Removal Gap Insert Removal InstallationReplacing Brake Gap Installation Wiring Wiring Safety InstructionsElectrical Cabinet & Motors Circuit Diagram Control Rod PartsControl Rod & Brake Control Rod & Brake Parts List DescriptionBody G0746-49 Bed & Body Parts List Gears Headstock Gears Parts List DescriptionFeed Direction Control Left Spindle Speed HeadstockControls Headstock Controls Parts List DescriptionChange Quick-Change Gearbox Parts List PR12M EXT Retaining Ring 35MM 100 Model G0746/G0749 Mfg. Since 3/13 Saddle Saddle Parts List Slides REF DescriptionApron 104 Model G0746/G0749 Mfg. Since 3/13Apron Parts List PCAP26M CAP Screw M6-1 X Model G0746/G0749 Mfg. Since 3/13 107 Tailstock Leadscrew Electrical Cabinet 1601 1603 1611 1604 1605 1608 1602 1606 1607 1609 1610Accessories Front Machine Labels Rear Machine Labels Appendix ThreadingDiametral & Modular Pitch Chart Warranty Card CommentsGrizzly INDUSTRIAL, INC BOX BELLINGHAM, WAWarranty & Returns