self-aligned rotator (turning roller): (1) Rotators mainly consists of power unit, idler unit, electric control box and hand control panel. (2) rotators (turning rolls) are used for the inside and outside circumferential and longitudinal welding. (3) The distance of rollers can be adjusted automatically according to the diameter of workpiece. (4) Variable Frequency drive speed control, being stable and precise. (5) rubber, steel or PU wheel, it is all on customers' decision. (6) It can be designed as movable type. (7) Hand control panel facilitates operation. (8) Brand of motor,reducer and electrical part: motor: Hengxing reducer: CEMA / Intervek electrical part: Schneider Inveter: Taida from Taiwan Technical parameters: Type : HGZ-100 / Self-aligned Main Consistent: one power unit , one idler unit and one hand control pendant Power supply: 380V 3 Phases 50Hz Speed control : Variable Frequency Drive (VFD) Applicable diameter of working piece (mm): Φ 1000-5500 Loading capacity (T): 100 Roller diameter (mm) : Φ500*120 Liner speed (mm/min) : 100-1000 Motor power (kw): 7.5 Roller Material : Rubber Control Method: Hand control panel.