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Screw bearing

The screw bearing is a specially designed type of bearing that combines the threaded structure with the functional characteristics of traditional bearings. It generally consists of an inner ring with threads, an outer ring, and rolling elements or sliding components between them. Compared with ordinary bearings, its unique threaded design gives it significant advantages in certain working conditions.
The threads on the inner and outer rings can have different pitches and helix directions. This design brings more variations to the movement mode and load-bearing capacity of the bearing. The rolling elements (such as balls, rollers) roll within the threaded raceways. Or in the sliding screw bearing, the relative movement is achieved by the relative sliding between the inner and outer rings, effectively reducing the frictional resistance while ensuring stable support.

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Application

The bearings can be used in the following industries

Mechanical processing equipment
- CNC machine tools: As a key component of the screw-nut pair, it ensures the high-precision positioning and rapid movement of the cutting tool along the X, Y, Z axes, enabling the precise machining of complex parts.
- Grinding machines: Used for the precise feed control of the grinding wheel head to ensure the dimensional accuracy and surface quality during the grinding process, meeting the processing requirements of high-precision molds, aerospace components, etc.
Industrial automation production lines
- Automated handling equipment: Such as automated guided vehicles (AGV), robot joints, etc., it provides support for the flexible rotation of the robotic arm and the precise positioning of the vehicle body, realizing efficient material handling and precise assembly.
- Conveyor equipment: In the drive drums and tensioning devices of belt conveyors and chain conveyors, it ensures the stable operation of the conveyor belt or chain, adapting to high-speed and long-term continuous operation and reducing maintenance frequencies.
Transportation field
- Automobiles: Applied to the screw-nut mechanism of the steering system to assist in the easy steering of the steering wheel and improve driving handling; it is also used for the suspension system adjustment of some high-performance sports cars to adapt to different road conditions and driving modes.
- Rail transit: In the opening and closing mechanisms of train doors and the lifting devices of pantographs, it ensures smooth and reliable operation and can maintain good performance under frequent use, ensuring traffic safety and passenger comfort.
Energy and power industry
- Wind turbines: Used in the yaw system and pitch control system to achieve precise wind alignment of the rotor and blade angle adjustment, maximizing wind energy capture efficiency. Meanwhile, in harsh outdoor environments, it can resist strong wind impacts and variable climatic conditions.
- Thermal power generation equipment: In the auxiliary transmission mechanisms of steam turbines and generators, such as governors, feed pumps, etc., it ensures stable operation, which is crucial for power generation efficiency and equipment reliability.
Aerospace field
- Aircraft landing gear: Withstands the huge impact loads during aircraft takeoff and landing, ensuring the reliable retraction and extension of the landing gear. Its high-reliability design is related to flight safety.
- Aircraft flight control surface actuation systems: Precisely controls the deflection angles of the flight control surfaces to ensure the accuracy of flight attitude adjustment, adapting to the complex stress in the high-altitude and high-speed flight environment.