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Linear ball bearing ST series

Linear ball bearing - ST series - THK
Linear ball bearing - ST series - THK
Linear ball bearing - ST series - THK - image - 2
Linear ball bearing - ST series - THK - image - 3
Linear ball bearing - ST series - THK - image - 4
Linear ball bearing - ST series - THK - image - 5
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Characteristics

Options
ball bearing
Diameter

Max.: 130 mm
(5.118 in)

Min.: 12 mm
(0.472 in)

Static load

Max.: 36.8 kN

Min.: 0.23 kN

Description

Model ST has a ball cage and balls both incorporated into a precision-ground cylindrical nut. The balls are arranged in zigzags so as to evenly receive a load. The ball cage is a drilled cage made of a light alloy with high rigidity, and is capable of high-speed motion. A thrust ring and a snap ring are installed on both sides of the inner surface of the nut to prevent the ball cage from overshooting. Model ST has a ball cage and balls both incorporated into a precision-ground cylindrical nut as shown in Fig.1 . The balls are arranged in zigzags so as to evenly receive a load. The ball cage is a drilled cage made of a light alloy with high rigidity, and is capable of high-speed motion. A thrust ring and a snap ring are installed on both sides of the inner surface of the nut to prevent the ball cage from overshooting. This structure allows rotational motion, reciprocal motion and complex motion with a small friction coefficient. Model ST has a stroke length up to twice the range within which the ball cage can travel. Since high accuracy can be obtained at a low price, this model is used in a broad array of applications such as press die setting, ink roll unit of printing machine, workpiece chuck unit of punching press, press feeder, work head of electric discharge machine, wound roll corrector, spinning and weaving machine, distortion measuring equipment, spindle of optical measuring instrument, and photocopiers. Minimal Friction Coefficient The balls and the ball raceway are in point contact, which causes the smallest rolling loss, and the balls are individually retained in the ball cage.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.