My suggestion is to find a local electric motor shop or find an Electrician in your area that you can talk to about what you want to do. In reality .... There are thousands of motors -- and it all depends on the power source available, the power requirements you are in need of, the voltage, the amperage and the drive system -- direct drive or pulley and belt systems etc etc.

Since you are from Denmark, I Goggled and saw this: Mains voltage in Denmark is 220-240V 50Hz. That is the starting point. AGAIN, search out a motor repair shop or motor supply house and a Qualified (licensed/bonded) Electrician to assist you.

My big question is why can't you just purchase a table saw rather than try and build one? There is a lot to getting a saw built from scratch!