Grizzly g0748, g0747 owner manual Coarse Downfeed, Fine Downfeed, To use the coarse downfeed

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Coarse Downfeed

Use the coarse downfeed lever to quickly move the spindle manually.

To use the coarse downfeed:

1.Make sure the spindle is completely stopped.

2.pull the downfeed selector knob out, then rotate it clockwise until the knob pin seats in the forward manual (disengaged) detent (see Figure 35).

Note: It may be necessary to turn the spindle by hand as you move the selector to enable the gears to mesh.

Manual (Disengaged) Position

Figure 35. Downfeed selector in manual

(disengaged) position.

3.Make sure the pin of the coarse downfeed lever hub is engaged with one of the detents on the downfeed sleeve (see Figure 36).

Coarse Downfeed

Lever Hub & Sleeve

Quill Lock

Lever

Figure 36. Coarse downfeed lever hub,

downfeed sleeve, and quill lock.

Model G0747/G0748 (Mfg. Since 8/12)

4.Make sure the quill lock lever is loose so that the quill can easily move.

5.rotate the coarse downfeed lever around the hub to control the depth of the spindle.

Fine Downfeed

1.Make sure the spindle is completely stopped.

2.pull the downfeed selector knob out, then rotate it clockwise until the knob pin seats in the forward manual (disengaged) detent (see Figure 35).

Note: It may be necessary to turn the spindle by hand as you move the selector to enable the gears to mesh.

3.set the auto-downfeed direction pin in the neutral (middle) position to disengage the fine downfeed handwheel from the auto- downfeed gears.

4.position the downfeed stop for the spindle depth that is correct for your operation, then secure it in place with the locking wheel.

5.use the coarse downfeed lever to lower the spindle slightly until you can pull the fine downfeed clutch lever out to the left and it locks in place. This will engage the fine downfeed handwheel with the quill and spindle.

6.to lower the spindle, rotate the fine downfeed handwheel. When the quill dog meets the downfeed stop, the clutch lever will disen- gage and the spindle will return to the top.

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Contents For models manufactured since 8/12 Page Table of Contents Wiring Introduction Machine Description Manual AccuracyContact Info Front View Identification Model G0747 Headstock Identification Model G0748 Headstock Identification Machine Data Sheet Main Specifications Operation Info Model G0748 Vertical Mill Variable Speed Variable Safety Instructions for Machinery SafetyPage Additional Safety for Milling Machines Circuit Requirements for Power SupplyAvailability Full-Load Current Rating50 ft Grounding InstructionsExtension Cords Minimum Gauge Size 14 AWGSetup Needed for SetupUnpacking Small Item Inventory Figure Qty InventoryCleanup Before cleaning, gather the followingBasic steps for removing rust preventative Site Considerations Lifting & Placing HEAVy LiftTo lift and move the mill Machine Mounts Leveling & MountingLeveling Bolting to Concrete FloorsAssembly Initial LubricationTo assemble the mill Mill Test Run Test RunTo test the power feed Power Feed Test RunInspections Adjustments To perform the spindle break-in procedureSpindle Break-In Operation Overview OperationsTable Movement Graduated Index RingsTable Locks Axis Power Feed Identification Tool Needed Qty Axis Power Feed OperationTo operate the X-axis power feed Head MovementRotating Head Left/Right Tilting Head Forward/BackwardRam Movement Moving Ram Forward/BackwardRotating Ram Tool Diameter in inches x Spindle SpeedDetermining Spindle Speed Recommended Cutting Speed FPM xTo set the Model G0747 spindle speed Setting Model G0747 Spindle SpeedLow Spindle Speed Range To set the Model G0748 spindle speed Setting Model G0748 Spindle SpeedDownfeed Controls Spindle DownfeedCoarse Downfeed Fine DownfeedTo use the coarse downfeed To use the auto-downfeed Auto-DownfeedModel G0747 brake lever G0748 Brake Lever Spindle BrakeTools Needed Qty Loading/Unloading ToolingLoading Tooling Unloading ToolingG1076-52-PC. Clamping Kit AccessoriesG9299-10 Yuasa-Type Rotary Table G7155-6 Precision Milling ViseMaintenance Cleaning ProtectingSchedule Quill LubricationHeadstock Gearing Table Ways One-Shot OilerRam Ways Head Tilt & Ram PinionsTable Elevation Leadscrew To lubricate the power feed gears Power Feed GearsMachine Storage Service TroubleshootingSymptom Possible Cause Possible Solution Symptom Possible Cause Possible Solution Saddle gib and adjustment screw Knee Gib Adjustment Screw Adjusting GibsAxis Leadscrew Backlash Adjusting Leadscrew BacklashCross Leadscrew Backlash To tram the spindle to the table Tramming SpindlePage Wiring Safety Instructions WiringG0747 Wiring Diagram G0748 Wiring Diagram Main PartsDescription Main Parts ListDescription Axis LeadscrewsDownfeed System Downfeed System Parts List CAM ROD Sleeve Assembly G0747 Headstock PFH30M Flat HD SCR M5-.8 X G0747 Headstock Parts ListG0748 Headstock G0748 Headstock Parts List Headstock Front COVER, Aluminum One-Shot Oiler Accessories G0747 Machine Labels & Cosmetics G0748 Machine Labels & Cosmetics Model G0747/G0748 Mfg. Since 8/12 Comments Warranty CardBOX BELLINGHAM, WA Grizzly INDUSTRIAL, INCWarranty & Returns