Slewing Bearing

Under this category, BOLTRAC Slewing Bearings are heavy-duty rotational components engineered to enable smooth 360° oscillation between the upper structure and undercarriage of excavators, cranes, and other construction machinery. These bearings serve as the critical pivot point that supports combined axial loads, radial forces, and overturning moments, ensuring precise equipment positioning and stable operation during digging, lifting, and material handling applications.

We offer a comprehensive range of slewing bearings tailored to specific machine types and load requirements. Our product line includes single-row four-point contact ball bearings for standard excavator applications, crossed roller bearings for enhanced rigidity and precision, double-row ball bearings for increased load capacity, and three-row roller bearings for the most demanding heavy-duty applications in large excavators and cranes.