The Effect of Factors on the Radiation Noise of High-Speed Full Ceramic Angular Contact Ball Bearings

Table 3

Test parameters and levels.

Level	Preload (N)	Oil supply (mL·min^−1)	Speed (r·min^−1)
1	250	0.01	3000
2	300	0.015	6000
3	350	0.02	9000
4	400	0.025	12000
5	450	0.03	15000
6	500	0.035	18000