Grizzly g0748, g0747 owner manual Maintenance, Schedule, Cleaning Protecting

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SECTION 6: MAINTENANCE

To reduce risk of shock or accidental startup, always disconnect machine from power before adjustments, maintenance, or service.

Schedule

For optimum performance from your machine, follow this maintenance schedule and refer to any specific instructions given in this section.

Ongoing

To maintain a low risk of injury and proper machine operation, if you ever observe any of the items below shut the machine down immediately, disconnect it from power, and fix the problem before continuing operations.

loose mounting bolts or fasteners.

Worn, frayed, cracked, or damaged wires.

Missing belt guards.

reduction in braking speed or efficiency.

Any other unsafe condition.

Before Beginning Operations

Turn the spindle direction switch to the off (middle) position to prevent spindle startup when connected to power (see Page 23).

Move the spindle speed range selector to the manual (forward) position to prevent the spindle from unexpectedly auto-downfeeding when rotation is started (see Page 38).

Make sure the X-axis power feed is turned OFF to prevent unintentional table movement when connected to power (see Page 28).

perform lubrications tasks as directed in the Lubrication section on Page 44.

Check table movement in all three axes directions for loose/tight gibs. Adjust the gibs if necessary (see Page 51).

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

Daily, After Operations

Disconnect the machine from power.

Vacuum/clean all chips and swarf from table, slides, and base.

Wipe down all unpainted or machined sur- faces with a good quality rust preventative.

Cleaning &

Protecting

Regular cleaning is one of the most important steps in taking good care of this mill. Each opera- tor is responsible for cleaning the machine imme- diately after using it or at the end of the day. We recommend that the cleaning routine be planned into the workflow schedule, so that adequate time is set aside to do the job right.

Typically, the easiest way to clean swarf from the ways and table is to use a wet/dry shop vacuum that is dedicated for this purpose only. The small chips leftover after vacuuming can be wiped up with a slightly oiled rag. Avoid using compressed air to blow off chips, as this may drive them deep- er into moving surfaces and could cause sharp chips to fly into your face or hands.

Besides the ways and elevation leadscrew, all other unpainted and machined surfaces should be wiped down daily to keep them rust-free and in top condition. This includes any surface that could be vulnerable to rust if left unprotected (this espe- cially includes any parts that may be exposed to water soluble cutting fluids). Typically with these parts, a thin film of oil is all that is necessary for protection.

Keep tables rust-free with regular applications of products like G96® Gun Treatment, SLipit®, or Boeshield® T-9 (see Section 5: Accessories on Page 42 for more details).

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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 Availability Power SupplyFull-Load Current Rating Circuit Requirements forExtension Cords Grounding InstructionsMinimum Gauge Size 14 AWG 50 ftSetup 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 Leveling Leveling & MountingBolting to Concrete Floors Machine MountsAssembly 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 To operate the X-axis power feed Axis Power Feed OperationHead Movement Tool Needed QtyRotating Head Left/Right Tilting Head Forward/BackwardRam Movement Moving Ram Forward/BackwardRotating Ram 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 DownfeedCoarse Downfeed Fine DownfeedTo use the coarse 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 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