BSH Series Ball Screw

BSH Series Ball Screw

product descriptions

The "BSH" designation typically stands for Ball Screw Housing or Ball Screw Support Unit. It serves as a ready-to-use drive component for a linear motion system.

The BSH Series provides a compact, precise, and rigid solution for the drive system of any linear stage. It is specifically designed to minimize assembly time and eliminate common alignment errors associated with mounting separate ball screw components, streamlining the machine building process.

Key Functional Features

The BSH Series Linear Screw is defined by its integrated design, which provides a high-precision, rigid, and ready-to-mount drive system.

Integrated Fixed-End Support (Most Critical Feature): The most critical feature is the integration of the Fixed-End Support (BK equivalent) directly into the housing. This support includes pre-loaded angular contact thrust bearings responsible for:

• Absorbing all axial thrust (drive) loads generated during operation.
• Maintaining the screw's high axial rigidity and zero-backlash operation.
• Eliminating the need for the customer to purchase and precisely align a separate support block.

Semi-Integrated Supported End: The opposite end typically includes a built-in bearing unit (BF equivalent) to provide the necessary radial support while simultaneously allowing for the screw's essential thermal expansion.

High-Precision Drive: The unit utilizes a high-grade ball screw (typically C5 or C7) and a pre-loaded ball nut, ensuring high positional accuracy and reliable repeatability for the entire system.

Compact Design: By integrating the support bearings into a unified housing, the BSH unit achieves a significantly shorter, more compact profile than assembling individual screw components and blocks, saving valuable machine space.

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