Rubber track with excellent straight-line stability

A rubber crawler having a good straight driving property, comprising:

• an endless rubber elastic body;
• a main cord row embedded in the rubber elastic body in a longitudinal direction thereof;
• two layers of bias cords which are embedded at an outer peripheral side of the main cord row and form opposite bias angles with respect to the main cord row;
• guide projections formed at the center of an inner peripheral surface of the rubber crawler at fixed pitches therebetween;
• and
• a lug formed on an outer peripheral surface of the rubber crawler,
• wherein bias cords of a first layer at a side near the main cord row are embedded, at a fixed angle of inclination with respect to the main cord row, over a region having substantially the same transverse dimension as that of the main cord row,
• bias cords of a second layer are divided into two sections in the transverse direction thereof, and the two sections cover a region having substantially the same transverse dimension as that of the bias cords of the first layer, other than a portion located directly below/above the guide portions, such that respective side edges of the main cord row, the bias cords of the first layer, and the bias cords of the second layer in the transverse direction are substantially aligned on each of the two sides, the bias cords of the second layer being arranged at an angle of inclination opposite to that of the bias cords of the first layer, and
• assuming that an interval between the main cord row and the bias cords of the first layer is represented by a, an interval between the main cord row and the bias cords of the second layer is represented by b, the transverse dimension of the bias cords of the first layer is represented by A, and the sum of the transverse dimensions of the right and left sections of the bias cords of the second layer is represented by B, said rubber crawler satisfies a×A=b×B.