Grizzly g0748, g0747 owner manual Spindle Brake, Model G0747 brake lever G0748 Brake Lever

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ALWAYS start spindle rotation before using auto-downfeed to avoid the risk of gear damage.

7.Select one of the three downfeed rates by pulling the knob of the auto-downfeed rate selector out, position the selector over the appropriate detent, then release the knob. Make sure the pin is firmly seated by attempt- ing to move the selector without pulling the knob out.

Note: Refer to the illustration in Figure 38 when selecting the downfeed rate.

Upper = 0.006 in./rev. Middle = 0.0015 in./rev. Lower = 0.003 in./rev.

(Rates given in inches of travel per revolution of the spindle)

Figure 38. Positions of auto-downfeed rate

selector.

8.use the coarse downfeed lever to lower the spindle slightly until you can pull the clutch lever out to the left and it locks in place, which will start the auto-downfeed spindle travel.

Spindle Brake

After turning the spindle switch OFF, move the brake lever to bring the spindle to a full stop (see Figures 39–40).

To avoid premature wear of the brake sys- tem, use the spindle brake ONLY after power to the spindle has been turned OFF.

G0747

Brake Lever

Figure 39. Model G0747 brake lever.

G0748

Brake Lever

Figure 40. Model G0748 brake lever.

To evenly wear the brake shoes, alternate the direction you move the lever when brak- ing.

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

-39-

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Contents For models manufactured since 8/12 Page Table of Contents Wiring Contact Info IntroductionMachine Description Manual Accuracy 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 Availability Power SupplyFull-Load Current Rating Circuit Requirements forExtension Cords Grounding InstructionsMinimum Gauge Size 14 AWG 50 ftUnpacking SetupNeeded for Setup Small Item Inventory Figure Qty InventoryBasic steps for removing rust preventative CleanupBefore cleaning, gather the following Site Considerations To lift and move the mill Lifting & PlacingHEAVy Lift Leveling Leveling & MountingBolting to Concrete Floors Machine MountsTo assemble the mill AssemblyInitial Lubrication Mill Test Run Test RunTo test the power feed Power Feed Test RunSpindle Break-In Inspections AdjustmentsTo perform the spindle break-in procedure Operation Overview OperationsTable Locks Table MovementGraduated Index Rings Axis Power Feed Identification To operate the X-axis power feed Axis Power Feed OperationHead Movement Tool Needed QtyRotating Head Left/Right Tilting Head Forward/BackwardRotating Ram Ram MovementMoving Ram Forward/Backward Determining Spindle Speed Spindle SpeedRecommended Cutting Speed FPM x Tool Diameter in inches 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 DownfeedTo use the coarse downfeed Coarse DownfeedFine Downfeed To use the auto-downfeed Auto-DownfeedModel G0747 brake lever G0748 Brake Lever Spindle BrakeLoading Tooling Loading/Unloading ToolingUnloading Tooling Tools Needed QtyG1076-52-PC. Clamping Kit AccessoriesG9299-10 Yuasa-Type Rotary Table G7155-6 Precision Milling ViseSchedule MaintenanceCleaning Protecting Quill LubricationHeadstock Gearing Table Ways One-Shot OilerTable Elevation Leadscrew Ram WaysHead Tilt & Ram Pinions To lubricate the power feed gears Power Feed GearsMachine Storage Symptom Possible Cause Possible Solution ServiceTroubleshooting 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