Linear ball bearing STSI

steelminiature

The IKO Stroke Rotary Bushing is a linear motion rolling guide with a small diameter and sectional height. It can provide rotary and linear motion in the axial direction simultaneously with rotational motion. It is extremely compact, has high accuracy, and smooth motion with low frictional resistance, making it suitable for various measuring instruments, IC manufacturing devices, precision machines or other small and highly accurate parts. A specialized design combines an external cylinder with a cylindrical raceway and balls that are incorporated in the retainer, making rotary and linear motion in the axial direction possible simultaneously with rotational motion. After the raceway surface of the external cylinder and shaft are heat treated, they receive an ultra-precision finish and are set to zero or a slight pre-load state by incorporating high precision steel balls. This provides extremely high accuracy in both rotary and linear motion. Tiny balls incorporated in a thin external cylinder result in a very small diameter and small sectional height. Since each component is precisely ground and adjusted to ideal pre-load conditions, extremely smooth and stable operation with low frictional resistance over a long period of time is possible.