Chicago Electric 69454 ユーザーズマニュアル

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Item 69454 

        

1.  The Grinding Wheel MUST be:

•  rated to at least 7800 RPM.

•  no larger than 7″ (178 mm) in diameter.

•  fitted with a 7/8” round arbor hole.

•  1/4” (6mm) thick or less.

•  suitable for surface grinding, not edge grinding.

•  dry and clean.

•  proven undamaged by inspection and 

by the ring-test explained below.

2.  Press in and hold the Spindle Lock Button 

to prevent the Spindle from turning.

3.  Remove the Outer Flange. Keep the 

Inner Flange in position on the Spindle.

4.  Closely inspect the Grinding Wheel before mounting.  

Perform a ring-test on the wheel (unless wheel is 

smaller than 4″ or is an unusual shape) as follows:
a.  Suspend wheel using a dowel or 

finger through the arbor hole.

b. 

Tap the flat side of the wheel with a light non-

metallic object, such as a screwdriver handle, 

at a point 45° from the vertical center line on 

each side of the wheel and 1 – 2 inches from 

the edge of the wheel (see Illustration).

c.  Rotate the wheel 90° and repeat the test 

until the entire wheel has been checked.

d.  An undamaged wheel will give a clear tone. 

If cracked, there will be a dead sound 

and not a clear ring.

5.  For wheels with paper gaskets (blotters) or 

metal gaskets:  Slip the grinding wheel onto the 

Spindle with the gasket first.  The gasket should be 

centered on the grinding wheel and the wheel and 

gasket should rest flat against the Inner Flange. 

6.  Thread the Outer Flange onto the Spindle.  

Wrench tighten only enough so that the wheel is 

securely held on the spindle.