An ideal circulation structure that scoops the ball in the tangential direction.
The SBK type ball screw with ball retainers eliminates collisions and mutual friction between balls and improves grease retention by incorporating ball retainers between the balls. As a result, it achieves low noise, low torque variation, and long-term maintenance-free operation. Furthermore, the ideal circulation structure that scoops the balls in the tangential direction enables high-speed use at a DN value of 160,000. (Note: DN value = ball center diameter × revolutions per minute) The preloading method adopts a phase difference between the two rolling grooves of the nut, resulting in a shorter and more compact overall length of the ball screw nut compared to the double nut type with spacer preloading.
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basic information
● Excellent High Speed Due to the circulation structure that allows the balls to be scooped up in the tangential and lead angle directions by the end cap, it enables usage at high speeds with a DN value of 160,000, achieving 2.2 times the high-speed feed of conventional products. ● Smooth Operation The ball retainer eliminates collisions and mutual friction between the balls, resulting in minimal torque variation, which ensures smooth and stable operation. ● Long-term Maintenance-Free The formation of grease pockets has improved grease retention, achieving long-term maintenance-free operation. ● Low Noise and Good Sound Quality The ball retainer installed between the balls has eliminated collision noise between the balls. Furthermore, the circulation structure that scoops the balls in the tangential direction has also resolved collision noise caused by ball circulation, resulting in reduced noise levels.
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THK pioneered the "rolling" of linear motion components in machines in 1972 and developed the "linear motion system." The development of this "linear motion system" has led to increased precision, speed, labor-saving, and improved efficiency in machinery, enabling energy-efficient equipment design. All of THK's technology is focused on providing greater lightness and precision to the "movement" of various mechanisms, bringing numerous innovations to the world. 【THK's Main Product Areas】 1. Mechanical Component Parts: - Development, manufacturing, and sales of LM guides, ball splines, ball screws, electric actuators, etc. 2. Mechatronics Related Products: - Precision XY stages, linear motor actuators, etc. 3. Automotive Parts: - Link balls, rod ends, etc. 4. Robotics: - Pick and place robots "PPR," transport robots "SIGNAS," service robots "SEED-Solutions" (including display robots and temperature measurement robots), etc. 5. Seismic Isolation: - Seismic isolation tables TSD, seismic isolation modules TGS.