Milwaukee 6148 6149-20 6151 6152-20 6153-20 6155-20 6154-20 6156-20 manual Grinding Fig

WARNING!

To reduce the risk of injury when grinding:

•ALWAYS use the proper guard.

•ALWAYS properly install the guard.

•ALWAYS hold the tool firmly with both hands using the handles provided before and during grinding.

•NEVER use a wheel that has been dropped.

•NEVER bang grinding disc onto work.

•NEVER grind without proper safety equipment.

Selecting Wheels

Grinding is the cutting action of thousands of abrasive grains on the face of a grinding wheel. When grinding metals such as steel and iron, choose an aluminum oxide grinding wheel. Select a silicon carbide grinding wheel for stone and concrete. Use cotton reinforced wheels for non-ferrous metals.

Type 27 Reinforced 1/8" Cut-Off Wheels are suited for small cut-off and shallow notching operations only.

Installing Grinding Wheels (Fig. 8, 9, & 10)

Fig. 8

Flange nut

Boss

Spindle

Grinding wheel

Flange

Flange nut position for 1/4" thick wheels

Fig. 9

Flange nut

Boss

Spindle

Grinding wheel

Flange

Flange nut position for 1/8" thick wheels

WARNING!

To reduce the risk of injury, do not use the spindle lock button to stop the spindle while the tool is in use or is coasting after shut-off. This will result in tool damage.

1.When guard is properly positioned, place flange on spindle with flange facing away from tool.

2.Place selected wheel on spindle and align with flange. Position flange nut according to wheel thickness (Fig. 8 & 9).

3.Press the spindle lock button while turning flange nut clockwise. Tighten securely with the spanner wrench provided.

4.To remove wheel, unplug tool and reverse procedure.

page 8

Fig. 10

Operator's Zones

Grinding (Fig. 11)

Fig. 11

Hold at a 5° to 15° angle

1.If you have just installed a grinding wheel or are just beginning a period of work, test wheel by letting it spin for one minute before applying it to the workpiece.

NOTE: Out-of-balance wheels can mar workpiece, damage the tool, and cause stress to wheel that may cause wheel failure.

2.Firmly grasp body of tool and side handle before starting and while using tool. Allow wheel to come to full speed before starting to grind.

3.When grinding, hold sander/grinder at a 5o to 15o angle, using con- stant pressure for a uniform finish. Too great an angle causes con- centrated pressure on small areas which may gouge or burn work surface.

4.Control pressure and surface contact between disc and workpiece. Too much pressure slows cutting speed.