Currently, many companies offer favorable conditions for railway equipment. It can be: The axle-boxes, bearings, springs, car frame, wheel pairs, trolleys, automatic coupler device. A special place in the above list are a pair of wheels. They are among the most important sites, the quality of which directly affect the normal operation of all cars. These items carry a wagon, not only mass but also cargo weight, directing its movement along the track and interpret a variety of hard and blows in the direction of the rough ways. Therefore, their condition is set very high quality control and ekspluatatsilnny inspection, carried out in enterprises. The wheel pair consists of an axis with Napressovannye it still two wheels.
They are distinguished by their device to shroud having braces are removable and bezbandazhnym representing a one-piece design. Banding wheel includes three parts: the wheel center and the bandage is secured to ferrule. Currently, the main type of solid-rolled steel are (bezbandazhnye) wheels. The wheels of cars come in two sizes: 950 and 1050 mm. The external surfaces of the wheels are in contact with the rails, called the roll surface. Their profile has a definite shape and size. Axis of the wagon wheel-sets made of steel billets by kovkoi and heat treatment (hardening in order). Depending on the axle boxes and bearings wheel axis are divided into types II and III for the bearings and the RU and RU-1 Roller bearings.
At first axis of the neck collar end, while the second – threaded for screwing the screws that hold the roller bearing. Almost all axles of wheel pairs are: a few journals that are required to complete functionality bearings of predpodstupichnye that grip the dust washers Books. Wheel sets of cars throughout his life is subjected to a variety of sluzhbnogo technical inspections for cars that do not allow them to work faulty, ie, to wear some of the details above established norms, including absolute and inspection during the formation and repair of the change of elements, and defining hallmarks of vagueness sign. In addition to a thorough inspection and measurement of all elements is checked by means of a magnetic flaw neck of predpodstupichnye and middle part of the axis. Not least the value of railway equipment have and bogies. They are necessary for inscribing a free train travel in rugged areas and affect the installation of spring systems, while improving the movement of the car and reducing the vertical displacement of the body on uneven way. Under the freight cars set of two-, three-, four-, and multi-carts. The latter can be used for a special car-carrier, wherein large capacity. By type of truck side walls are cast steel and lap. The latter have greater strength and more reliable.