Which type of coupling is suitable for connecting two shafts at slight angles?

The U-Joint, or universal joint, is designed specifically to connect two shafts that are misaligned or operating at slight angles to each other. This capability is essential in applications where the shafts cannot be perfectly aligned due to various mechanical configurations or assembly requirements.

The U-Joint allows for the transmission of torque while accommodating angular misalignment, making it a common choice in many types of machinery, including vehicles and other rotating equipment. Its operational flexibility ensures smooth power transfer even when the shafts are not in a straight line, which can minimize wear and increase the lifespan of the components involved.

In contrast, the other coupling types may not effectively manage angular misalignments. Certain couplings like the 3-jaw and spider are typically more suited for applications requiring direct alignment of shafts and do not perform well under conditions of angular displacement. Offset couplings can provide some degree of flexibility but typically have limitations compared to a U-Joint when dealing with varying angles. Hence, the U-Joint stands out as the optimal solution for this specific need.