What is the allowable stress for a lineshaft carrying pulley?

The allowable stress for a lineshaft carrying a pulley is established based on material properties, load conditions, and safety factors. When designing components like lineshafts that must transmit power effectively while supporting loads such as pulleys, it is critical to ensure they do not exceed material strength limits to avoid failure.

In this context, the allowable stress of 6000 psi aligns with typical engineering practices for such applications. This value reflects a balance between material strength and the need for a safety margin. In mechanical design, particularly for rotating shafts, the allowable stress is often derived from the yield strength of the material divided by a safety factor, commonly ranging from 1.5 to 3, depending on the application.

For a lineshaft, which may experience cyclic loading and dynamic stresses, a conservative approach is essential. By setting the allowable stress at 6000 psi, designers can accommodate both the static and dynamic loads without risking structural integrity. This ensures operational reliability and longevity of the lineshaft under various loading scenarios encountered in mechanical systems.

Considering the other options, they likely represent allowable stresses that are either too high for safe operation or not sufficiently conservative, which could increase the risk of failure under real-world operating conditions. Therefore, 6000 psi is