Washing machine having balancer

A front loading washing machine comprising:

• a housing;
• a water reservoir installed in the housing to contain washing water;
• a spin tub provided in the water reservoir to hold laundry to be washed, the spin tub rotatable with respect to a horizontal axis of the washing machine, the spin tub including a cylindrical body, a front cover and a rear cover, the front cover having a front wall with an opening formed therein for receiving laundry and an annular recess having a predefined depth formed in the front wall of the front cover such that an outer annular side wall defining the annular recess establishes direct physical contact with a predefined area of an inner surface of the cylindrical body;
• and
• at least one balancer installed in the annular recess of the spin tub, the balancer comprising an annular shaped race formed of a plastic material,
• wherein the annular shaped race is formed by joining together a first housing section having an open side and a second housing section adapted to cover the open side of the first housing section,
• the first housing section includes a first side wall, a second side wall and a connecting wall between the first side wall and the second side wall, the first side wall being located most distant from a center of rotation of the annular shaped race and the second side wall being located closest to the center of rotation of the annular shaped race,
• an outer support portion is provided at an outer circumferential surface of the first side wall, the outer support portion continuously extending along a circumferential direction of the annular shaped race and protruding outward to make contact with the annular recess, and
• when a plurality of balls located within the annular shaped race rotate while making contact to an inner surface of the first side wall, the outer support portion transmits a centrifugal force of the balls to the annular recess.