The main considerations in the design of the leaf chains are tensile loads, joint wear, and link plate and sheave wear.īack in earlier days of the automobile chain drives are the very popular power transmission system. Tensions are very high, but speeds are slow. Normally the chains work intermittently. Leaf chains are designed for lifting rather than power transmission. These chains are commonly used in industrial equipment where ultimate smoothness is required. High-performance silent chains are available in a wide range of sizes with pitches and in widths and are used on very-high-speed drives where exceptional smoothness and quietness are required. Standard silent chains are used in a wide variety of industrial drives where a compact, high-speed, smooth, low-noise drive is required. Silent chains from different manufacturers usually cannot be connected together. Silent chains are made up of stacked rows of flat link plates with gear-type contours designed to engage sprocket teeth in a manner similar to the way a rack engages a gear as shown in the figure. The links are held together at each chain joint by one or more pins, which also allow the chain to flex. The silent chain also called inverted tooth chain, consists of a series of toothed link plates assembled on joint components in a way that allows free flexing between each pitch.
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