Ball screw SBN type with ball retainer now available in shaft diameters of 16 to 32 mm.
The SBN type high-speed ball screw with ball retainers eliminates collisions and mutual friction between the balls, and improves the retention of lubricants by installing ball retainers between the balls. This results in reduced noise, excellent torque characteristics, and long-term maintenance-free operation. The return piece creates an ideal circulation structure that scoops the balls in the tangential direction, enhancing the strength of the circulation section and achieving a permissible DN value of 130,000. (Note: DN value = ball center diameter × revolutions per minute) The preloading method adopts an offset preload method that shifts the lead at the center of the nut. As a result, the overall length of the nut is shorter and more compact compared to the double nut type. Additionally, as an option for long-term maintenance-free operation, a lubrication device for ball screws (QZ) developed for this purpose, as well as a wiper ring that prevents foreign matter from entering the inside of the nut even in harsh environments, have been standardized.
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basic information
● Excellent High Speed The compact SBN lifts the balls in the tangential direction due to the return piece, resulting in a natural ball trajectory and an ideal circulation method. It achieves high-speed operation with a DN value of 130,000. ● Excellent Sliding Performance The ball retainer eliminates mutual friction between the balls, reducing torque fluctuations, which results in 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 eliminates collision noise between the balls. Additionally, the circulation structure that lifts the balls in the tangential direction and the use of resin for the return piece have resolved collision noise during circulation, achieving low noise levels.
Price information
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Delivery Time
Applications/Examples of results
Work machinery drive units, FPD transport units, various transport machines.
Company information
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.
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