1. High accuracy: Machine tool spindles require high precision bearings to ensure rotational stability and accuracy at high speeds.
2. High speed: Machine tool spindles usually need to run at high speed, so they need to use high speed rolling bearings.
3. High rigidity: Machine tool spindles are subjected to high workpiece cutting forces and inertia forces during machining, so they must use bearings with high rigidity to ensure the stability of machine tool operation and the accuracy of workpiece machining.
4. Wear resistance: Machine tool spindle in the use of the process will produce greater wear, so you need to use bearings with high wear resistance.
5. High temperature resistance: Machine tool spindles will produce high temperatures during operation, so you need to use bearings with high temperature resistance to avoid bearing damage due to high temperatures.
6. Low friction: Machine tool spindles usually require low friction in order to reduce the energy consumption of the machine tool during operation and improve machining efficiency. Therefore, the friction coefficient of the bearing should be as low as possible.