A compact and high-rigidity swivel bearing that achieves excellent rotational accuracy.
Cross roller bearings can support loads in all directions, including radial, axial, and moment loads, due to their alternating orthogonal arrangement of cylindrical rollers on a 90° V-groove rolling surface through a spacer retainer. The dimensions of the inner and outer rings are minimized for compactness while achieving high rigidity, making them ideal for applications such as joints and swivels in industrial robots, swivel tables in machining centers, rotating parts of manipulators, precision rotary tables, medical devices, measuring instruments, and IC manufacturing equipment.
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basic information
● Excellent rotational accuracy By using a spacer retainer between orthogonally arranged rollers, it prevents roller skew (tilting) and the increase in rotational torque caused by mutual friction between the rollers. Additionally, compared to conventional types using steel plate retainers, it does not experience roller misalignment or locking phenomena, allowing for stable rotational torque even under preloading conditions. Furthermore, by adjusting the bearing clearance and applying preload, high-precision rotational motion can be achieved. ● Easy handling The outer or inner ring, which is divided into two parts, is fixed in place after the rollers and spacer retainer are assembled, preventing separation and making handling during assembly easy. ● Skew prevention The spacer retainer eliminates mutual friction between the rollers and prevents roller skew (tilting), resulting in stable rotational torque.
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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.
