The holder for the cutting tool is known as the arbor. The arbor is designed to accept Powerbor 3/4” Weldon shank annular cutters.
For cutters above 65mm diameter a larger
1-1/4” arbor is required. (Part No.18Y105/A)
The Powerbor annular cutters normally have two flats disposed at 90°to each other.
To mount the cutter.
First ensure the ejector pin is in place.
Align the flats with the two fixing screws.
Push the cutter up into the arbor until it stops.
Tighten the two fixing screws onto the cutter flats with the hex keys supplied.