The twin tandem, a four-row angular contact ball bearing, replaces conventional tapered roller bearings in wheel bearings and contributes significantly to saving fuel.
双串联，一个四列角接触球轴承，取代传统的圆锥滚子轴承在车轮轴承，大大节省燃料。
2
The invented device is: inclination angle adjustable off-centering reducing double-roller cast rolling-thermal tandem rolling- cutting-coiling production line.