Inquiry:
We developed the fifth generation of red ring short-stress mill stands RR568, RR558, RR547 and so on. This kind of mill stand has excellences of high precision and low weight.
（1）RR547
Model: RR547
Max center distance of rolls under load: 450mm
Min center distance of rolls under load: 320mm
Max center distance of rolls with no load: 470mm
Neck diameter: 200mm
Barrel diameter: 650mm
Max. Rolling force: 150t
Balancing of bearing seat: hydraulic
Axial adjustment:+/-3mm
Press hydraulic motor: OMT200
Material of tension rod: 42CrMoA
Material of bearing seat:ZG310-570
Copper nut:ZQAL9-4-4-2
Mill base: Q235A (by welding)
（2）RR558轧机机架
Model: RR558
Max center distance of rolls under load: 550mm
Min center distance of rolls under load: 460 mm
Max center distance of rolls with no load: 570mm
Neck diameter: 230mm
Barrel diameter: 750mm
Max. Rolling force: 200t
Balancing of bearing seat: hydraulic
Axial adjustment:+/-3mm
Press hydraulic motor: OMT200
Material of tension rod: 42CrMoA
Material of bearing seat:ZG310-570
Mill base: Q235A (by welding)
Copper nut:ZQAL9-4-4-2
（3）RR568
Model: RR568
Max center distance of rolls under load: 660mm
Min center distance of rolls under load: 530mm
Max center distance of rolls with no load: 680mm
Neck diameter: 280mm
Barrel diameter: 760mm
Max. Rolling force: 280t
Balancing of bearing seat: hydraulic
Axial adjustment:+/-3mm
Press hydraulic motor: OMT200
Material of tension rod: 42CrMoA
Material of bearing seat:ZG310-570
Mill base: Q235A (by welding)
Copper nut:ZQAL9-4-4-2
（4）RR578(650)
Model: RR578
Max center distance of rolls under load: 780mm
Min center distance of rolls under load: 640mm
Max center distance of rolls with no load: 750mm
Neck diameter: 300mm
Barrel diameter: 800mm
Max. Rolling force:350t
Balancing of bearing seat: hydraulic
Axial adjustment:+/-4mm
Press hydraulic motor: OMT200
Material of tension rod: 42CrMoA
Material of bearing seat:ZG310-570
Mill base: Q235A (by welding)
Copper nut:ZQAL9-4-4-2
ZALO
