What is the primary function of a jockey wheel in belt systems?

The primary function of a jockey wheel in belt systems is to provide tension in belts transmitting force over long distances. In mechanical systems that use belts to transfer power, it is essential to maintain proper tension for efficient operation. A jockey wheel serves to adjust the tension in the belt, ensuring it remains taut enough to effectively transfer power without slippage. This is particularly important in long belt systems where the distance between pulleys can lead to varying tension levels. A correctly tensioned belt minimizes wear, enhances performance, and helps maintain the alignment of the belt with the pulleys, thereby enabling smooth operation of the machine.

In contrast, options such as providing support for heavy machinery, connecting electrical components, or limiting the rotation of the shaft do not align with the specific role of a jockey wheel in the context of belt systems.