Is it troublesome to replace the rotor of this high-speed centrifuge? Do I need a special wrench?

unnecessary. Veyon 2417 G adopts the latest technology of ultra-high-precision drive head structure, and the drive head matches the angle rotor with high precision. You don't need any tools to remove the rotor. You can install and remove the rotor by gently lifting it with your hands. The operation is extremely simple and efficient.