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Explain CAT 40 to me

Loading CAT 50 tools by hand gets old really quick when the MTB makes the spindle keys asymmetrical. BT wins that one.

Fadal made the keys identical so you could slam a tool in any which way. I don’t miss the old Kafos, 80’s Doosan’s or Tree VMC’s that required a particular orientation.
 
Loading CAT 50 tools by hand gets old really quick when the MTB makes the spindle keys asymmetrical. BT wins that one.

Fadal made the keys identical so you could slam a tool in any which way. I don’t miss the old Kafos, 80’s Doosan’s or Tree VMC’s that required a particular orientation.

Until you are running a tight tolerance bore.
 








 
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