👉 The spoke fluid, also known as the lubricating fluid in gear systems, is a specialized oil designed to minimize friction and wear between the rotating and stationary gears. It flows through the narrow grooves, or spokes, of the gear teeth, creating a thin film that separates the surfaces and reduces direct metal-to-metal contact. This fluid is crucial for maintaining smooth operation, extending the lifespan of the gears, and ensuring efficient power transmission in mechanical systems.