Spindle Speed in R.P.M.

1.Drill Speed Table...Drill Speed can be changed by placing the belt in any one of the stepped pulleys. The spindle speed chart, as shown above, lists belt positions for the various spindle speeds.

2.Belt Guard...Covers pulleys and belt during operation of drill press.

3.Belt Tension Lock Handle...Tighten- ing handle locks motor bracket sup- port to maintain correct belt distance and tension.

4.Belt Tension Handle...Turn handle counterclockwise to apply tension to belt, turn handle clockwise to release belt tension. Refer to section “Assem- bly-Installing and Tensioning Belt”.

5.Head Lock Set Screws...Lock the head to the column. Always have them locked in place while operating the drill press.

6.Feed Handle...For moving the chuck up or down. One or two of the handles may be removed if necessary whenever the workpiece is of such unusual shape that it interferes with the handles.

7.Column Collar... Holds the rack to the column. Rack remains movable in col- lar to permit table support movements.

8.Table Support...Travels up and down on column. Supports arm and crank.

9.Table Crank...Turn clockwise to ele- vate table. Support lock must be released before operating crank.

10.Rack...Combines with gear mecha- nism to provide easy elevation of table by hand operated table crank.

11.Base...Supports drill press. For addi- tional stability, holes are provided in base to bolt drill press to floor. (See “Additional Safety Instructions for Drill Presses”.

12.Column Support...Supports column, guides rack, and provides mounting holes for column to base.

13.Column...Connects head, table and base on a one-piece tube for easy alignment and movement.

14.Table...Provides working surface to support workpiece.

15.Depth Scale...Shows depth of hole being drilled in inches and millimeters.

16.Depth Scale Indicator...Indicates drilling depth selected on depth scale.

17.Depth Scale Lock...Locks the depth scale to selected depth.

18.Spring Asm....Provides means to adjust quill spring tension.

19.Belt Guard Latch...Press button to raise belt guard.

20.Chuck...Holds drill bit or other recom- mended accessory to perform desired operations.

21.Arm...Extends beyond table support for mounting aligning the table.

22.Table Bevel Lock...Locks the table in any position from 0°- 45°.

23.Table Lock...Table can be rotated in various positions and locked.

24.Bevel Scale...Shows degree table is tilted for bevel operations. Scale is mounted on table support, if it is to be used for quick reference where accu- racy is not critical.

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RIDGID SP6490 manual Spindle Speed in R.P.M, Belt Guard Latch...Press button to raise belt guard