Milwaukee Heavy-Duty Sanders and Grinders Using Grinding and CUT-OFF Wheels, Inspecting Wheels

USING GRINDING AND CUT-OFF WHEELS

Installing Grinding Wheels (Fig. 8)

1.Unplug tool and place it upside down on a level surface as shown. Remove any accessories from spindle.

2.Thread nylon washer onto spindle. Attach guard and grinding wheel using Fig. 8 to determine type and order of assembly (See Fig. 2 and 3 for attaching guard). NOTE: When installing Type 27 or Type 29 grinding wheels, position disc nut according to wheel thickness.

Position the guard in the location which offers best control and guard protection. For operating zones that provide maximum protection for the operator, see Fig. 9. NOTE: When selecting Type 11 grinding cup wheels, the guard’s skirt should be adjusted so that no more than 1/8" of the wheel extends beyond the guard.

3.To tighten, press the spindle lock button while turning wheel or disc nut clockwise using the spanner wrench provided.

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

Fig. 8
					Disc nut position
			Disc nut		1/8" thick or	1/4" thick
	A	B	C		less wheels		wheels
Grinding wheels					D
A. Type 28 with hub
B. Type 27 with hub
Type 29 with hub				Type 27
				flange
C. Type 27 with flange								Type 11
Type 29 with flange	E	F	G		H			flange

D. Type 11

Guard

E.Type 28

F.Type 27

G.Type 27

H. Type 11 Nylon washer

Spindle lock button Spindle

WARNING!

To reduce the risk of injury, the operator should be instructed in the use, care and protection of grinding wheels.

Care of Grinding & Cut-Off Wheels

Grinding and cut-off wheels should be protected from:

•wetness and extreme humidity

•any type of solvent

•extreme changes in temperature

•dropping and bumping

Grinding and cut-off wheels should be stored:

•in an organized way so wheels can be removed without disturbing or damaging other wheels

•with their safety information

Grinding and cut-off wheels should NOT be:

•dropped

•rolled

•bumped

If any wheel is dropped, rolled, bumped, subjected to extreme changes in temperature, or has come into contact with solvents or wetness, discard wheel immediately.

Troubleshooting

Deep scratches and circular marks can result from:

•Uneven pressure

•Using a partially glazed wheel - especially on aluminum applications

•Dirt or loose metal on the workpiece

•Failure to constantly move across surface

Bluish discoloration of metal surface indicates:

•Excessive heat caused by circular motion in a small area

•Excessive pressure

•Use of worn out or glazed wheels

Inspecting Wheels

Always handle wheels carefully to avoid damage. Before installing any wheel, always inspect it for cracks. If wheel is cracked, discard it to prevent others from using it.

WARNING!

Only use wheels with Maximum Safe Operating Speed rated at or above the RPM listed on the “WARNING” section of the tool's nameplate. This speed is based on the strength of the wheel, allowing for a reasonable measure of safety. It is not meant to imply a best or most efficient operating speed. Do not exceed the Maximum Safe Operating Speed.

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