Slewing bearing 

1. High Load Capacity: The QRU 148 slewing bearing can simultaneously bear significant radial loads, axial loads, and overturning moments. This capability is crucial for tunneling machines, which handle large volumes of soil and rock while facing multi-directional load impacts. The high load capacity ensures stable operation even under heavy loads.

2. Compact Structure: The QRU 148 features a compact design that integrates support, rotation, and transmission functions. This reduces the overall size of the tunneling machine, allowing for flexible operation in confined spaces and improving work efficiency.

3. Wear and Corrosion Resistance: Constructed from wear-resistant and corrosion-resistant materials, the QRU 148 is designed to operate in harsh environments. This enhances the bearing's durability, ensuring reliable performance in damp, dusty, or chemically corrosive conditions.

Additional Notes:

The Brazilian customer chose QIBR's QRU 148 slewing bearing to meet their needs for stability and durability in tunneling operations. QIBR utilizes high-performance materials and advanced manufacturing processes to ensure that the QRU 148 offers excellent mechanical properties and wear resistance. The bearing undergoes strict quality testing to withstand significant pressure and wear in extreme environments. Its design effectively distributes loads, reduces failure rates, and enhances the operational efficiency of tunneling machines. Extensive testing and real-world applications have validated the superior durability and long service life of the QRU 148 slewing bearing.