Here are some well-known brands in the global ball spline field:

1. THK: A Japanese brand that is a pioneer in the development of linear motion guides, bearings, and other transmission mechanisms worldwide. Its rolling bead flower keys are at the forefront of precision, reliability, and innovative technology, and are widely used in many fields such as automation equipment and precision machinery.
 
2. - KTO Hanyi (Dongguan Hanyi Precision Machinery Co., Ltd.): Focusing on the production of ball screws and linear guides, we have been developing and producing ball splines since 2016. Its product range is rich, covering micro splines, splines with synchronous wheels, splines for nut rotation, composite splines integrated with screw splines, and corrosion-resistant splines. The product has a long lifespan, reaching over 90% of imported products, high torque, far exceeding similar competitors, and can achieve ultra-high precision level accuracy. The price is only about 50% of imported products, with high cost-effectiveness
 
3. IKO: Japan's oldest manufacturer of needle roller bearings, with the most complete variety and the highest level of specialization. Guided by technology and technological development, IKO has mature technology in needle bearings and micro guides. Its ball spline products also have high precision and low friction characteristics.
 
4. Shangyin Technology: Taiwan, China's leading global linear transmission brand. Its self-developed products cover large to micro ball screws, linear slideways, industrial robots, etc. Ball spline products have a high popularity and market share in the Asian market, with obvious cost performance advantages.
 
5. TBI: Founded in Taiwan, China, China in 1986, it focuses on innovative R&D and design. Its distribution and business bases are distributed around the world. The ball screw, guide rail, and ball spline products are market-oriented and highly praised by customers from all over the world.
 
6. Yintai: Taiwan, China Company, founded in 1990, mainly produces ball screws, precision screw splines, linear guides, ball splines and actuators, and is an important supplier of key components of precision machinery.
 
7. NB: A Japanese brand that has been a pioneer in linear motion machines since its establishment in 1939. It is a comprehensive manufacturer of linear motion systems and has a certain market share in both domestic and international markets for ball spline products.
 
SKF: headquartered in Gothenburg, Sweden, is a leader in bearing technology and manufacturing. In 1905, it invented double row automatic centering ball bearings and has deep technical expertise in the field of bearings. Its ball spline products also have high quality and performance.
 
9. NSK: Seiko Co., Ltd., founded in 1916, is the first manufacturer in Japan to design and produce bearings. Its rolling bead flower keys have excellent performance in precision retention, service life, and other aspects.
 
10. Kuroda Precision: A Japanese brand, formerly known as "Kuroda Kanfan Manufacturing Co., Ltd.", established in 1925 as the first professional gauge manufacturer in Japan, with a high level of technology in precision positioning ball screw drive systems and other fields. Ball spline products also have certain market competitiveness.