If you're having a new pulley fabricated, let me share all of my numbers just in case my driven pulleys differ from yours.
Planer 29-1/2 mm in the trough, 44mm at the rim.
Saw 49 mm in the trough, 63 at the rim.
Spindle 39 mm
Small motor 39-1/2 mm in the trough, 56 at the rim
Large motor...