DeWalt DW831 Instruction Manual page 8

Wire Wheels
Type 27 guard
3" wire cup brush
Type 27 guard
4" wire wheel
CAUTION: Use a Type 27 guard with wire brushes and
wheels. Operators and others in the area should wear appropriate
eye, face and body protection. Strands of wire may break and fly
off when wire wheels and brushes are in use.
Sanding Flap Discs
Type 27 guard
unthreaded backing flange
non-hubbed sanding flap disc
threaded clamp nut
Sanding Discs (DW831)
Type 27 guard
hubbed sanding flap disc
6
rubber backing pad
sanding disc
threaded clamp nut
DW840 cannot be
WARNING:
used with conventional sanding
discs and backing pads due to
mismatched rated speeds.