Tilt systems and anti-roll torsion bar bearings for railway running gears

Rail vehicles with tilting systems can achieve higher operating speeds than conventional vehicles on existing lines. Not only does this shorten travel times, it also increases interest in intercity travel. INA bearings provide convincing bearing solutions for tilting mechanisms, drive units and anti-roll torsion bars. The solution not only improves service life, but also prolongs the maintenance cycle, and has been proved to be effective and reliable over many years of application experience. The application shows that the working life of the bearing can reach several million kilometers. Main bolster bearing The tilting motion of the car body is achieved by a bolster mounted on the bogie and coupled to the car body. Supported Roller Unit Bearing Supported Roller Unit is a complete assembly consisting of a shaft and two supported rollers. Two supporting rollers are used to support the bogie bolster, thereby realizing the tilting motion of the vehicle body. Cylindrical roller bearings Full complement cylindrical roller bearings with snap ring grooves are locating bearings that can withstand radial loads and axial loads in both directions. The bearing is axially positioned through the snap ring groove, and the lip seals at both ends of the bearing can effectively prevent the entry of contaminants and moisture. Usually two bearings are installed at both ends of the connecting rod to support the car body for tilting motion. Radial spherical plain bearings ELGES maintenance-free radial spherical plain bearings can withstand radial and axial loads, and have the ability to compensate for misalignment. Two joint bearings are press-fitted in the connecting rod to realize the tilting motion of the bolster. This kind of bearing has the advantages of shock resistance and impact resistance, and is completely maintenance-free during use. Tilt Drive System Bearings In an active tilt system, the vehicle body is tilted and stabilized at a predetermined position through actuators. The requirements for linear motion are met by electric or hydraulic actuators. Among the electric actuators, the planetary roller screw can effectively convert the rotary motion of the servo motor into high-quality dynamic linear motion. The combination of needle roller/thrust cylindrical roller bearings can withstand very high axial and radial loads and achieve a reliable configuration. A precision lock nut enables axial positioning of the bearing. A compact, inner ring needle roller bearing is used as the floating bearing. Torsion bars, anti-roll bars and support bearings The high-quality dynamic system for body stabilization is fitted with maintenance-free radial spherical plain bearings with special bladder-type seals. These bearings have high service life, good reliability, can be used in unprotected, high-pollution environments, adapt to large pendulums, rotation angles and can withstand alternating loads. The bearing pendulum and rotation angle can reach 20.