Angular ball bearing

An angular ball bearing comprising:

• an inner ring that has an inner ring raceway groove having an arc-shaped cross section on an outer peripheral surface of the inner ring;
• an outer ring that has an outer ring raceway groove having an arc-shaped cross section on an inner peripheral surface of the outer ring;
• and
• a plurality of balls rollably provided between the inner ring raceway groove and the outer ring raceway groove,
• wherein a groove curvature radius ratio (Ri) of the inner ring raceway groove to a ball diameter is 54% to 58%, a groove curvature radius ratio (Ro) of the outer ring raceway groove to the ball diameter is 51% to 58%, and Ri−Ro≥0 points, and
• wherein at least the inner ring raceway groove has a maximum surface pressure of 4.7 GPa to 6.0 GPa when a sum of permanent deformation amounts of the ball and the inner ring raceway groove at a center of a contact portion between the ball and the inner ring raceway groove is 1/10,000 of the ball diameter.