Grizzly G7947, G7948 instruction manual Loosening cover and jam nut

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3.While holding the spring lock cover against the side of the head stock so the cover stays splined with the locking lug; loosen the jam nut and loosen the cover nut approximately 1⁄4" (see Figure 43).

Figure 43. Loosening cover and jam nut

A high tension coiled spring is underneath the cover. Put on heavy leather gloves to protect yours hands from possible lacera- tions when removing the cover.

G7947/G7948 12 Speed Floor Drill Press

4.Put on heavy leather gloves to protect your hands from possible lacerations if the spring uncoils during the next step.

5.Pull the cover outward just enough to disengage the spring-cover lock slot from the locking lug. Note: It is important to keep a good grip during this step. Letting go of the cover will cause the spring to rapidly uncoil.

6.Rotate the cover counterclockwise to increase spring tension, or let the cover slowly unwind in the clockwise direction to reduce spring tension.

7.Engage the next available spring-cover lock slot with the locking lug and hold the spring lock cover tightly against the side of the head stock.

8.Snug the cover nut against the spring cover just until the nut stops, and then back off the nut approximately 1⁄3 turn, or just enough so there is no binding at complete spindle travel.

9.Hold the cover nut and tighten the jam nut against the cover nut.

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Contents G7947 G7948 Model G7947/G7948Page Table of Contents Warranty and Returns Contact Info IntroductionForeword Machine Data Sheet Other Related Information G7948 Machine Data Sheet 17-1/2 Column Lock Lever Locks table height IdentificationTable Height Crank Raises/lowers table Safety Instructions for Machinery SafetyAlways Lock Mobile Bases if Used Before Operating Machinery Safety for Drill Presses 110/220V Operation Circuit RequirementsAmperage Draw Circuit RequirementsExtension Cords Grounding110V Operation 220V OperationSet Up Safety SET UPItems Needed for Set Up UnpackingInventory Hardware Recognition Chart Site Considerations Clean UpFloor Load Working ClearancesColumn and Base To install the table supportTable Support Components and Hardware Needed QtyHandles and lock levers installed Headstock is Very Heavy. You Must Assistance when movingHeadstock Spindle Drill Chuck & ArborTo assemble the drill chuck and mount it to Downfeed Handles Belt Cover Knob To install the downfeed handlesLight 110V Only To install the tableTo install a light bulb in the drill press Mobile Base Mounting Test Run Floor MountingTo make and use the base plate Recommended AdjustmentsFactory adjustments that should be verified To install a drill bit Operation Safety Installing/RemovingOperations To remove a drill bitLubrication Suggestions Using the Drill Bit Speed ChartChoosing Speeds To change speeds Changing SpeedsDrilling Table Height Depth Stop Adjusting TableTable Rotation Table TiltTo remove the drill chuck and arbor Arbor RemovalG5753-Drill Press Vise AccessoriesH1300 H1298 G7984 H2347 H0736 G3640-Power Twist V-Belt 1⁄2 xMaintenance About Service ServiceTroubleshooting Motor & ElectricalPulley is loose Remove pulley Drill Press Operations Depth Stop Feed Shaft Spring Calibration Loosening cover and jam nut Electrical Components Power and light switch assemblyG7947/G7948 Wiring Diagram G7947 Stand/Table Breakdown G7947 Headstock Breakdown Description G7947 Parts ListPVA26 G7948 Stand/Table Breakdown G7948 Headstock Breakdown G7948 Parts List PVA29 Warranty and Returns Comments Warranty CardBOX BELLINGHAM, WA Grizzly INDUSTRIAL, INCPage Call Today For a Free Full Color Catalog

G7947, G7948 specifications

The Grizzly G7948 and G7947 are powerful, professional-grade milling machines designed for precision metalworking. These models cater to the needs of machinists and hobbyists alike, combining innovation with robust features ideal for various milling tasks.

The Grizzly G7948 is a vertical mill with a large working table, allowing users to handle bigger workpieces efficiently. It features a 2 HP motor, providing a spindle speed range from 50 to 3,000 RPM, enabling operators to tackle a wide range of materials and applications. The G7948’s dovetail column ensures stability and rigidity, minimizing vibrations during operation, which is crucial for achieving precision in milling tasks.

On the other hand, the Grizzly G7947 is a versatile combination of a lathe and a mill, perfect for those looking to maximize functionality in a smaller workspace. It also boasts a robust 1 HP motor, allowing for smooth operation with adjustable spindle speeds, enhancing its versatility. The G7947 is particularly user-friendly, featuring a quick-change tool post that facilitates faster tool swapping and changeovers, which is a significant advantage when working on multiple projects.

Both models come equipped with advanced features such as a digital readout (DRO) system that aids in precision measurements. The DRO provides real-time feedback on the machine's positioning, helping eliminate guesswork and ensuring accuracy. Additionally, the machines' power feed for the table enhances efficiency, making it easier for users to execute repetitive tasks without the strain of manual cranking.

Another notable characteristic of the Grizzly G7948 and G7947 is their user-friendly controls, designed with ergonomics in mind. The intuitive layout ensures that operators can easily navigate through the machine’s settings, allowing for quicker setup times and smoother workflow.

Lastly, the sturdy construction of both milling machines means they are built to withstand rigorous use, making them reliable choices for both industrial applications and serious hobbyists. These models exemplify Grizzly's commitment to quality and performance, making them exceptional additions to any workshop.
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