For CNC machines, robotics, semiconductor equipment and the like, linear motion systems often operate in environments where micrometer-level accuracy is required.
When selecting a shaft end, it’s essential to dial in the connections as accurately as possible. The following is a list of five benefits why specifying a slide bush or shaft assembly with optimized clearance between the shaft and bush is much preferred over designing with clearance adjustable housings.

1. Precision and Accuracy. Any deviation in shaft placement can lead to misalignment causing positional errors that compromise product quality and system performance.
2. Minimized Wear and Tear. Misalignment from shaft end deviation introduces uneven loading. This accelerates wear, increases friction and can lead to premature failure of components.
3. Reduced Vibration and Noise. Even small deviations can create oscillations or vibrations during high-speed operation. The associated noise can be problematic in precision manufacturing or cleanroom environments.
4. Energy Efficiency. When components are misaligned, the system requires more force to overcome friction and binding, thereby increasing energy consumption and reducing overall efficiency.
5. Safety and Reliability. In automated systems, misalignment can cause unexpected binding or jamming, leading to downtime or even damage to expensive equipment.
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