4400mm Hot Calender For Corrugated Paper Making Line

The hot calender is essential for achieving superior surface smoothness and gloss on corrugated paper grades. Our 4400/450 hot calender features an 800mm diameter alloy-forged hard roll with 35CrMo shafts, precision-drilled with two-inlet one-return channels for uniform heating within 1°C across the roll face. The large-diameter rotary joints ensure rapid thermal oil circulation, while the operation-side shaft insulation protects bearings from heat.

This hot calender incorporates an 11-zone controlled crown roll with alloy copper hydrostatic bearings for precise S-shaped profile correction. The self-assembled hydraulic system of this hot calender includes a large 304 stainless steel tank (1500×2400×750mm) with 3-micron filtration and Hawe digital proportional valves for precise control. The integrated PID-controlled thermal oil system and unified HMI make this hot calender exceptionally user-friendly and accurate.

Technical Specifications:

Parameter	Specification
Finished Paper Width	4500 mm
Product Grade	Corrugated Paper
Basis Weight Range	105-160 g/m²
Design Speed	600 m/min (50Hz)
Dynamic Balance Speed	700 m/min
Operating Speed	400-450 m/min
Machine Model	4400mm
Effective Roll Face Width	4600 mm
Frame/Bearing Center Distance	6000 mm
Design Line Pressure	60-120 kN/m
Hard Roll Diameter	φ800 mm (with φ30mm drilled holes)
Hard Roll Surface Hardness	SHD85
Thermal Oil Max Temperature	200°C (Roll Face Max 180°C)
Controlled Crown Roll Diameter	φ600 mm
Hardness Layer Depth	>10 mm

Invest in the precision and reliability of our hot calender for your corrugated paper production. With advanced temperature control, multi-zone crown adjustment, and integrated hydraulic/thermal systems, this hot calender delivers exceptional surface quality and operational efficiency. Contact us today to learn how this hot calender can enhance your paper finishing. Email: leizhanworld@gmail.com.