<p>A torque limiter comprises a shaft member (1), a cylinder member (2), and a traction oil. The shaft member (1) has an outer peripheral surface (20) and the cylinder member (2) has an inner peripheral surface (21) frictionally coupled to the outer peripheral surface (20) of the shaft member (1) when torque is transmitted. The traction oil is placed between the outer peripheral surface (20) of the shaft member (1) and the inner peripheral surface (21) of the cylinder member (2).</p>
