Low level of manufacturing technology. Bearing industrial manufacturing processes and process equipment and technology development of China's slow, low CNC lathe, grinding low-level of automation spherical roller bearings, the country is just over 200 automated production lines. Bearing life and reliability of critical heat treatment of advanced technology and equipment, such as controlled atmosphere to protect the heating, double refined, understated coverage bainite quenching spherical roller bearings price, many technical problems research failed to achieve a breakthrough. Research and development of new steel bearing steel development, improve the quality of steel, lubrication, cooling, cleaning and abrasives and other related technologies, still can not meet the level of bearing products and quality improvement requirements. Resulting in low process capability index, consistency is poor self-aligning roller bearings sales agents, processing large size dispersion instability inherent quality of products and affect the accuracy, performance, life and reliability of the bearing. Seals for SKF Bearings is extremely important, if there is a problem, then the seal portion of the bearing can cause great impact, if any irregular shape, lack of meat, micro-cracks and other defects of the sealing member are not possible. However, SKF Bearings tightness test cylinder seals are assembled on site and assembled joints and reliability assessment. Move on as cylinder seals and connections brim, cylinder piston (with between rod and rod chamber cavity), static seals and seal status. Dongguan spherical roller bearing manufacturers _ Long Yu (certified) _ roller bearings provided by Dongguan Machinery Co., Ltd. Long-bearing. Dongguan City, Long-Bearing Machinery Co., Ltd. (long-yu.net) is Dongguan, thrust roller bearings leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Long-leadership with the staff warmly welcome all inquiries negotiations to create a better future for Long Yu.