Chain guide, also known as chain tensioner plate or chain director, is a device used for guiding conveyor chains. It is commonly applied in various fields such as mechanical equipment, conveying systems, motorcycles, and automobiles. Its primary function is to direct the chain along a specific path, ensuring that the chain remains on the correct track during operation. This enhances system stability while also allowing for adjustment of the chain's tension, preventing lateral slippage caused by vibration during movement.