2.Mark the top of the rack, as shown in Figure 8, to keep track of which end is up.

Column

Ring

Marking

Location

Rack

Figure 8. Marking top of rack to show which end

is up.

3.Remove the column ring by loosening the setscrew, and remove the rack.

4.Place the rack inside of the table support assembly, mesh it together with the pinion, and slide the table support/rack assembly over the column, as shown in Figure 9.

Figure 9. Sliding table support and rack over the

column.

5.Slide the column ring over the column with the beveled edge facing down (Figure 10), fit the beveled edge of the column ring over the rack, and tighten the setscrew. Note: Do not over-tighten the setscrew or you may split the column ring. Also make sure the rack is seated firmly in the lower ring.

G7947/G7948 12 Speed Floor Drill Press

Figure 10. Correct column ring orientation.

6.Install the crank lever over the pinion shaft, and tighten the setscrew in the crank handle against the flat part of the pinion shaft.

7.Thread the handle into the crank lever.

8.Thread the large lock lever into the back of the table support assembly approximately three turns, for now.

9.Thread the small lock lever into the front part of the table support assembly approximately three turns, for now. The assembly should now be assembled as shown in Figure 11.

Large Lock

Crank Handle

Handle

Lever

 

 

 

Small Lock

 

 

Lever

 

Figure 11. Handles and lock levers installed.

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Grizzly G7947, G7948 instruction manual Handles and lock levers installed

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.