0003709014 - ESAB BF25 Floating Ball Screw Support Unit

Precision Linear Motion Support

The ESAB Bearing Bracket (Floating) BF25, part number 0003709014, is a critical mechanical component designed for the maintenance and repair of automated welding and cutting systems. In high-precision CNC gantries and linear motion stages, the ball screw is the primary mechanism for converting rotational motion into linear positioning. To function correctly, this screw must be supported at both ends. The BF25 unit serves as the "floating" support, typically located at the non-driven end of the shaft.

Unlike the fixed-side support (typically designated BK), the floating side is engineered to allow for a specific amount of axial freedom. This design consideration is vital in industrial environments where friction and operation generate heat. As the ball screw heats up, it undergoes thermal expansion. If both ends were rigidly fixed, this expansion would cause the screw to bow or buckle, leading to catastrophic loss of precision, vibration, and potential damage to the motor or screw itself. The BF25 bracket accommodates this expansion while maintaining radial rigidity, ensuring the screw remains perfectly centered.

Manufactured to strict tolerances, this housing includes a precision deep-groove ball bearing tailored for the BF25 standard (typically fitting a 25mm machined journal). The housing itself is constructed from durable materials capable of withstanding the vibration and dust inherent in industrial metalworking environments. For MRO specialists and maintenance engineers, using the genuine ESAB part ensures dimensional compatibility and load-bearing capacity consistent with the machine's original specifications.