Abstract: A chain link comprises a first plate, a second plate, a pin which connects the two plates, and a plurality of rolling elements arranged circumferentially around the pin, wherein the plurality of rolling elements are exposed to enable direct contact between them and a tooth of a sprocket when said chain link is mounted to said sprocket. The plurality of rolling elements may be arranged to roll along a surface of the pin. The plurality of rolling elements may be arranged to roll along a surface of a tooth of a sprocket when the chain link is mounted to the sprocket.

Abstract: A chain link comprises a first plate, a second plate, a pin which connects the two plates, and a plurality of rolling elements arranged circumferentially around the pin, wherein the plurality of rolling elements are exposed to enable direct contact between them and a tooth of a sprocket when said chain link is mounted to said sprocket. The plurality of rolling elements may be arranged to roll along a surface of the pin. The plurality of rolling elements may be arranged to roll along a surface of a tooth of a sprocket when the chain link is mounted to the sprocket.

Abstract: A chain link comprises a first plate having a first hole in it, a second plate having a second hole in it, a pin which passes through the first hole and the second hole, and a plurality of rolling elements arranged circumferentially around the pin, wherein when the chain link is engaged with a tooth of a sprocket, the tooth directly contacts one or more of the plurality of rolling elements. The plurality of rolling elements may roll along a surface of the tooth as the chain link conveys, or is conveyed by, the tooth. One or more of the plurality of rolling elements may roll along a surface of the pin as the chain link conveys, or is conveyed by, the tooth.