Timepiece bearing, movement, and portable timepiece

A timepiece bearing comprising:

• a bearing member of unitary structure that is provided at least at one end portion of a shaft member which is rotatable around an axis and that regulates movement of the shaft member in axial and radial directions of the shaft member;
• an elastic member for applying an urging force in an axial direction of the bearing member to hold the bearing member in contact with the shaft member;
• a frame member containing the bearing member;
• and
• a pressurization adjustment mechanism capable of adjusting an urging force from the bearing member toward the shaft member;
• wherein the elastic member establishes connection between the bearing member and the frame member, and the frame member is supported by and fixed to a support member;
• and
• wherein the shaft member is rotatable around the axis while the shaft member and the bearing member are held in contact with each other by the elastic member.