Bearing cage for a spherical roller bearing

A spherical roller bearing comprising:

• an outer ring with a diameter of at least 499 mm and having two outer raceways;
• an inner ring having two inner raceways;
• two sets of spherical rollers, each set of spherical rollers rolling along a separate one of the two outer raceways and a separate one of the two inner raceways;
• and
• two bearing cages, each one of the two sets of spherical rollers being accommodated in a separate one of the two bearing cages, each bearing cage including at least a first cage ring extending in a circumferential direction of the bearing, a second cage ring extending in the circumferential direction of the bearing and a plurality of cage bars, each cage bar extending substantially in an axial direction of the bearing from the first cage ring to the second cage ring such that a plurality of closed pockets are formed, each pocket being configured to receive one spherical roller, each cage bar separating two adjacent pockets and having a first circumferential side face facing a first pocket and a second circumferential side face facing a second pocket;
• wherein each one of the first and second circumferential side faces of each cage bar is provided in the axial direction with a first contact area and second contact area each configured to at least partially contact the spherical roller, at least one of the first and second contact areas having a convex curvature in a radial direction.