2025 / 03 / 26

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Breaking the Bottleneck of Single-Screw Mechanical Transmission: CF/PEEK Star Wheel Deformation Reduced by 60%

In the field of precision transmission for single-screw machinery, the performance of star wheels directly impacts equipment lifespan and operational efficiency. While PEEK material offers notable advantages such as high-temperature and corrosion resistance, challenges like rapid wear and deformation under extreme conditions remain bottlenecks limiting its application. Junhua Co., Ltd. has introduced a groundbreaking solution with its innovatively developed CF/PEEK star wheel.

Junhua’s CF/PEEK star wheel achieves a comprehensive upgrade in material performance through a specialized formulation process. With a carbon fiber content of 40%-50% and the addition of a small amount of PTFE (polytetrafluoroethylene) for modification, mechanical strength, wear resistance, and temperature tolerance are significantly enhanced. Tensile strength is improved by over 7 times compared to standard PEEK, while creep resistance is markedly increased, ensuring stable meshing accuracy even under prolonged loads. The friction coefficient remains stable between 0.15-0.25, and the wear rate is only half that of conventional PEEK. With a continuous operating temperature of up to 300°C and a peak tolerance of 330°C, it perfectly adapts to harsher working environments.

To address the unique stress distribution in single-screw systems, Junhua’s technical team optimized the star wheel’s structure through simulation and dynamic load testing. The refined tooth profile and fiber orientation effectively disperse stress, reducing localized stress concentration by more than 25%. Under high-pressure alternating loads, the deformation of CF/PEEK star wheels is 60% lower than that of standard PEEK, ensuring long-term operational stability. Field test data from a compressor application showed that Junhua’s CF/PEEK star wheel retained 92% of its initial precision after 8,000 hours of continuous operation, far exceeding the average lifespan of conventional PEEK.

As a leading enterprise in China’s specialty engineering plastics sector, Junhua’s CF/PEEK star wheels offer three core advantages:

1. Patented CF/PEEK composite molding technology (Patent No.: ZL201910443696.8), ensuring uniform carbon fiber distribution in the matrix and eliminating performance fluctuations.

2. A full-process quality control system, monitoring 20+ key parameters from raw material selection to molding and finishing, achieving a batch consistency rate of 99.5%.

3. Customization capabilities, providing tailored material modification solutions based on customer equipment specifications.

With the single-screw compressor market growing at an annual rate of over 5%, Junhua leverages its integrated advantages—spanning PEEK resin polymerization, R&D, production, and sales—to deliver comprehensive service support. This includes free 200-hour simulated condition validation, non-standard tooth profile analysis completed within 48 hours, and a 12,000-hour operational quality guarantee. These services not only enhance customer satisfaction and trust but also give Junhua a competitive edge in the market.

The innovative development and application of Junhua’s CF/PEEK star wheels not only overcome the performance limitations of traditional PEEK in extreme conditions but also bring new solutions and growth opportunities to the precision transmission field of single-screw machinery. As market demand continues to rise and technology advances, Junhua will remain at the forefront of the industry, delivering high-quality products and services to more customers worldwide.