FRICTION RING BALL LOCK

A friction ring ball lock is used on differential shafts to hold multiple cores while allowing controlled slip between them. Inside the ring, spring-loaded balls grip the core from inside, while the friction element manages torque transfer. This combination helps each roll adjust independently based on its thickness or tension. In slitting and rewinding jobs—especially for BOPP, film, foil, or paper—you often get slight variation in roll diameter. Without a differential system, some rolls become tight and others loose. The friction ring ball lock solves this by maintaining uniform tension…Read update