Views: 0 Author: Site Editor Publish Time: 2026-04-02 Origin: Site
Thrust tilting pad bearings and radial tilting pad bearings play a critical role in heavy-duty rotating machinery. Beyond their individual challenges, they also share common core technological barriers. In this article, we examine the core technical challenges and present practical solutions.
The gap between domestic and international white metal bearings comes down to five technical challenges. Addressing these is essential for localization. Here’s how we tackle them:
International industry leaders have complete fluid lubrication and TEHD simulation systems, enabling them to calculate pressure fields, temperature fields, pad deformation, and oil film thickness. However, many domestic enterprises still remain at the stage of “drawing and imitating,” lacking closed-loop validation through simulation and experimental data.
· Solution: Establish a complete fluid lubrication and thermoelastohydrodynamic (TEHD) simulation system. Use test bench data to calibrate models and break the dilemma of “imitation without accuracy.” Collaborate with third-party simulation and testing institutions to improve simulation accuracy.
High load capacity, heat resistance, and anti-seizure properties are the core requirements for white metal bearings. The formulation and process are critical to the manufacturer—they directly determine the service life and reliability of the bearings.
· Solution: Optimize the tin-based babbitt alloy formulation by incorporating reinforcing elements and nanomaterials. Refine processes such as centrifugal casting and arc spraying to develop proprietary core technologies.
Babbitt Thrust Pad
Babbitt Thrust Pad
Babbitt Thrust Pad
High-end equipment alone is not enough. The key lies in establishing a complete process and quality control system—covering precision machining equipment such as CNC boring and grinding, online inspection capabilities, and a pad thickness grouping and matching mechanism. Without systematic process control, even advanced equipment can fail to deliver compliant products.
· Solution: Introduce high-end CNC equipment and establish a full-process monitoring system from raw materials to finished products. Achieve standardized processing and matching of pad components to prevent the problem of “machinery without process.”
Bearings are not isolated components; they must be dynamically matched with the entire system—including the rotor, coupling, and gearbox. International industry leaders provide complete shaft system calculations and system-level solutions. However, many domestic enterprises still focus on component-level supply, lacking the capability for end-to-end system integration.
· Solution: Move beyond the component-only model. Integrate with other components such as the main engine rotor and coupling to provide a comprehensive dynamic calculation for the complete shaft system. Draw from integrated designs like the “monolithic extruded oil film damper + tilting pad bearing” combination to enhance overall equipment stability.
International leaders like Kingsbury and Waukesha have over a century of real-world operating data behind them. Their designs—what structure to use under which load, what clearance to set, what oil temperature to hold—are backed by data.
Domestically, we lack both real operating data and a failure analysis database. So design still leans on experience, with little room for continuous iteration.
· Solution: Build a long-term database of real operating data and failure cases. Learn from international best practices. Then gradually define the right structure, clearance, and oil temperature for each operating condition—pushing toward long-life reliability.
Radial Tilting Pad
Radial Tilting Pad
Radial Tilting Pad
The core challenges of radial tilting pads lie in high-speed stability, precision control, and temperature rise management. For both thrust and radial tilting pad bearings, the ultimate common barriers are lubrication simulation, babbitt alloy formulation, and shaft system dynamics. Breaking through these key points—by refining manufacturing processes and building robust data systems—will make it possible to achieve domestic substitution for high-end white metal bearings, providing safe and stable core support for heavy-duty equipment.
