Breaking Systems The break is needed to stop a train at the desired position. Based on the breaking mechanism, two types of break can be recognized, adhesion and non-adhesion breaks. Mechanical breaks, which are the most essential type of breaks, consist of thread and disc breaks. Disc breaks can be mounted either on the axle or on the wheel. At breaking, the discs are clamped by brake pads on the calipers to impede rotation of the wheel. Due to the space availability in the bogies, the axle mounted disc breaks are usually used on trailer bogs. While the wheel mounted disc breaks are used on motorized bogies. Adhesion decreases as speeds increase, that can result in wheel sliding during breaking. Therefore, the rail breaks were introduced that do not depend on adhesion and use eddy current and frictional force. The wheel is not used on the axle, but on the axle. The wheel is not used on the axle, but on the axle. The wheel is not used on the axle, but on the axle. The wheel is not used on the axle, but on the axle. The wheel is not used on the axle, but on the axle.