Features:
- Variable Speed Heavy-Duty Direct Drives:
- Equipped with variable speed heavy-duty direct drives to the rolls.
- Drive System:
- Direct drive to the rolls with heavy-duty helical bevel gears.
- Output shaft directly coupled to the roll shaft.
- Individual infinite variable speed drive for each roll with AC motors.
- AC motors coupled to programmable frequency inverters.
- Control Panel Features:
- Digital readout of roll torque in (A)%.
- Speed variation of each roll controlled by two potentiometers.
- Oil Heating and Cooling System:
- Rolls heated and cooled by two separate free-standing oil heating and cooling units.
- Units placed next to the two-roll mill (usually on the left side).
- Connected to the mill with stainless steel hoses at floor level, covered with an insulating cover.
- Oil-Circulating Systems:
- Each unit contains two individual oil-circulating systems, one for each roll.
- Features large circulating pumps, high-capacity electric heaters, and oil cooling units.
- Temperature Control:
- Both systems individually regulated with programmable electronic digital PID temperature controllers.
- Control panel on the mill equipped with digital temperature instruments for each roll.
- Roll Design and Temperature Distribution:
- Rolls made with internal machined spiral channels near the surface.
- Rapid circulating oil heating media ensures even temperature distribution over the entire roll surface.
- At a set temperature of 150°C, actual temperature variance between centre and end part is less than +/- 1.0°C.
- Maximum roll temperature: 220°C (optional 250°C).
