A fixed type constant velocity universal joint, comprising: an outer joint member having a spherical inner peripheral surface in which a plurality of track grooves (7a, 7b) are formed so as to extend in an axial direction of the outer joint member, the outer joint member having an opening side and an interior side spaced apart from each other in the axial direction; an inner joint member having a spherical outer peripheral surface in which a plurality of track grooves (9a, 9b) are formed so as to be paired with the plurality of track grooves of the outer joint member; a plurality of balls for transmitting torque, the plurality of balls being interposed between the plurality of track grooves of the outer joint member and the plurality of track grooves of the inner joint member; and a cage comprising pockets for receiving the plurality of balls, the cage having a spherical outer peripheral surface and a spherical inner peripheral surface, which are fitted to the spherical inner peripheral surface of the outer joint member and the spherical outer peripheral surface of the inner joint member, respectively, wherein the plurality of track grooves of the outer joint member comprise: first track groove portions positioned on the interior side; and second track groove portions positioned on the opening side, wherein each of the first track groove portions comprises an arc part having a curvature center that is positioned without being offset in the axial direction with respect to a joint center, characterized in that, the first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line (N-N) and adjacent to each other in the peripheral direction with their inclination directions opposite to each other, wherein each of the second track groove portions is formed into a different shape from a shape of the each of the first track groove portions so as to increase an effective track length at a maximum operating angle, wherein the each of the first track groove portions and the each of the second track groove portions are connected to each other at a position on the opening side with respect to the joint center, wherein each of the plurality of track grooves of the inner joint member is formed so as to be mirror-image symmetrical with corresponding one of the plurality of paired track grooves of the outer joint member with respect to a plane including the joint center and being perpendicular to the joint axial line (N-N) at an operating angle of 0°, and wherein an axial clearance between the inner joint member and the cage is set to be larger than an axial clearance corresponding to a clearance between each of the plurality of balls and the each of the plurality of track grooves. an outer joint member having a spherical inner peripheral surface in which a plurality of track grooves (7a, 7b) are formed so as to extend in an axial direction of the outer joint member, the outer joint member having an opening side and an interior side spaced apart from each other in the axial direction; an inner joint member having a spherical outer peripheral surface in which a plurality of track grooves (9a, 9b) are formed so as to be paired with the plurality of track grooves of the outer joint member; a plurality of balls for transmitting torque, the plurality of balls being interposed between the plurality of track grooves of the outer joint member and the plurality of track grooves of the inner joint member; and a cage comprising pockets for receiving the plurality of balls, the cage having a spherical outer peripheral surface and a spherical inner peripheral surface, which are fitted to the spherical inner peripheral surface of the outer joint member and the spherical outer peripheral surface of the inner joint member, respectively, wherein the plurality of track grooves of the outer joint member comprise: first track groove portions positioned on the interior side; and second track groove portions positioned on the opening side, first track groove portions positioned on the interior side; and second track groove portions positioned on the opening side, wherein each of the first track groove portions comprises an arc part having a curvature center that is positioned without being offset in the axial direction with respect to a joint center, characterized in that, the first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line (N-N) and adjacent to each other in the peripheral direction with their inclination directions opposite to each other, wherein each of the second track groove portions is formed into a different shape from a shape of the each of the first track groove portions so as to increase an effective track length at a maximum operating angle, wherein the each of the first track groove portions and the each of the second track groove portions are connected to each other at a position on the opening side with respect to the joint center, wherein each of the plurality of track grooves of the inner joint member is formed so as to be mirror-image symmetrical with corresponding one of the plurality of paired track grooves of the outer joint member with respect to a plane including the joint center and being perpendicular to the joint axial line (N-N) at an operating angle of 0°, and wherein an axial clearance between the inner joint member and the cage is set to be larger than an axial clearance corresponding to a clearance between each of the plurality of balls and the each of the plurality of track grooves.