Balancing device for drum washing machine

摘要

A drum washing machine includes a tub suspended in a housing, and a spin basket rotatably mounted in the tub. Each spin basket includes oil-filled races that are coaxial with the spin basket, a plurality of balls movable in the races, and oil disposed in the races. The oil is introduced into each race through an oil supply hole while forcing air out through an air vent which is angularly spaced from the oil supply hole, e.g. by 90 degrees.