PRO 36 AD
Fig.
3 shows how annular cutters work. As the cutter penetrates the workpiece, the
pilot pin recesses into the arbor and tightens the spring. As a result, after the cutter
goes
through the entire thickness, the slug core is expelled from the cutter.
Fig. 3. Annular cutters work
Annular cutters are designed to make only through holes shown in Fig. 4. When
drilling incomplete through holes the pilot pin must not be used.
Fig. 4. Types of holes to make with annular cutter
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Slug core
Spring
Pilot pin
Annular cutter
Arbor
Incomplete through holes
Complete through holes
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