U.S. Tsubaki U.S. Tsubaki is a leading manufacturer and supplier of power transmission and motion control products and is the world’s market share leader in roller chain. Products Supplied by U.S. Tsubaki Chain Attachments Extended Pitch Chain Heavy Chain Contact Edwards Industrial today to learn more about our relationship with U.S. Tsubaki. If you know what part you need, request a quote today! Need a part but aren’t sure of the details? Submit a photo and we’ll help you out.