TRACK-SUPPORTED CAGE PLATES FOR POWER TONGS

摘要

A power tong is provided with a support for the cage plate assembly which is comprised of a rail and track combination. Preferably the rail is a circular ring formed on the outside of the tong body and the track is a groove formed on the inside surfaces of the cage plates. The preferred material for the rail is a high-impact, abrasion resistant, low-friction elastoplastic polymeric material, more preferably, polyurethane.