... markets Holland, Italy, India,Japa 1. Single-Row Four Point Contact Ball Slewing Ring( 01 series) CHARACTERISTIC OF STRUCTURE,PERFORMANCE, APPLICATION ... RANGE The Single-Row Four Point Contact Ball Slewing Ring is composed of 2 seat-rings, ... OF STRUCTURE,PERFORMANCE, APPLICATION RANGE The Single-Row Four Point Contact Ball Slewing Ring is composed of 2 seat-rings, ...