Double-Row Ball Slewing Bearings
Double-row ball slewing bearings offer much higher axial, radial and moment capacity than single-row designs thanks to two ball tracks. Produced from Ø300 mm to Ø5000 mm with internal gear, external gear or gearless options, these solutions deliver reliable performance in heavy-duty applications.
Increased rigidity improves positioning accuracy in a wide range of applications from crane towers to wind turbine yaw systems, while optimized ball distribution reduces vibration for quiet operation. Although the body height is slightly greater than single-row models, maintenance intervals are longer and fatigue life improves by more than 25%.
As Nursan, in addition to internal/external gear options, we provide preventive maintenance integration with optional sensor slots, offering long-lasting and highly efficient solutions.
With high load capacity, low friction and long service life, double-row ball slewing bearings deliver reliable performance in industrial systems. Quiet operation and easy maintenance increase machine efficiency.
As Nursan, we offer custom production up to 5000 mm in diameter for CNC machines, conveying systems, robotic applications and rotary tables. Preferred in the energy, defense, food and automation industries, our bearings add strength and continuity to your projects.
Internally geared slewing bearings offer advantages in limited spaces with their compact design. Preferred in wind turbines, cranes, tower platforms and defense applications, these solutions provide high torque transmission and safe positioning.
Produced by Nursan with low backlash tolerance, custom tooth profiles and precise heat treatment, our internally geared bearings deliver long-lasting, durable performance in defense, tunnel boring machine and marine projects. All our products come with industry-specific technical support.
Externally geared slewing bearings offer high torque transmission and easy integration in large-diameter equipment. Providing reliable performance in excavators, cranes, concrete pumps and heavy industrial machinery, they bring efficiency and robustness to operations.
Produced by Nursan with precision-milled tooth profiles and high surface hardness, our external gear systems offer long service life. Used in a wide range of fields from port cranes to defense projects, our products pass rigorous quality control processes before reaching our customers.
Applications
