Designed with advanced four-point contact ball geometry, the QU series delivers exceptional multi-directional load bearing capability. Precision-matched steel balls and fully hardened gothic arch raceways form four stable contact points under operating pressure, allowing the bearing to sustain synchronous axial loads, radial loads and overturning moments. This structural optimization realizes even stress distribution across the entire bearing surface, effectively mitigating mechanical deformation, operational vibration and rotational deviation during long-term continuous operation and frequent start-stop cycles. It presents far more stable dynamic performance than ordinary single-row rotary bearings under complex alternating load conditions.

The biggest highlight of the QU toothless series lies in its flexible gear-free structural design. The smooth, seamless bearing ring eliminates gear meshing clearance, tooth surface wear and gear transmission noise that are common in geared slewing bearings. Without fixed gear transmission limitations, users can freely configure diversified driving solutions, including hydraulic motor drive, belt transmission, chain drive and direct motor drive according to actual equipment design needs. This unique adaptability makes the QU series highly suitable for customized automation equipment, precision rotary platforms and low-noise operation machinery with special structural layout requirements.