Hub bearing

A hub bearing, comprising:

• an inner member including an inner ring main body, the inner ring main body having a cylindrical shape and an outer periphery on which a double row of inner rolling surfaces is formed;
• an outer member including
• an inner cylinder mounted to a rotating shaft and disposed inside the inner ring main body;
• a disk portion projecting radially outward from the inner cylinder and to which a wheel is attached;
• and
• an outer cylinder having a cylindrical shape, connected to the disk portion, and provided with a double row of outer rolling surfaces facing the double row of inner rolling surfaces in a radial direction;
• a double train of rolling elements rotatably accommodated between the double row of inner rolling surfaces and the double row of outer rolling surfaces;
• and
• a seal for sealing a gap between the inner member and the outer member, wherein
• the inner member includes
• an inner ring disk portion extending radially outward from the outer periphery of the inner ring main body;
• and
• an inner ring outer cylinder having a cylindrical shape, connected to the inner ring disk portion, and facing the outer cylinder in the radial direction,
• the seal includes a first seal for sealing a gap between the inner ring outer cylinder of the inner member and the outer cylinder of the outer member, and
• the first seal is provided at a position where the first seal does not overlap the double train of rolling elements in the radial direction.