PURPOSE: To improve the turning capability of a cart by this turn bearing device for carts such as a compact game automobile equipped with an engine, i.e., go-cart or racing cart, etc.

CONSTITUTION: For a cart which is constituted of a frame 1, motor 2, wheel driving device, front wheel steering mechanism and a riding seat 5, etc., and for the bearing of the front wheels 7a, 7b of which, a caster angle is provided, the vicinity of right and left rear wheels 9a, 9b of a rear wheel driving shaft 6 and the car body frame 1 are connected with a link 10 to obtain the turn bearing device of the cart.