Profile: Diamond Chain is a supplier of roller chain for aircraft, power transmission and product conveying throughout manufacturing industries. Diamond's oval contour chain serves as the primary drive for Bobcat's 863 G-Series. Bobcat® has incorporated the oval contour chain into its drive design in a bow-tie fashion with two short continuous loops on each side of the front and rear sprockets that drive the wheels. Plastic film feeder chain is used on all types of thermoforming conveyor equipment.