2018 Davi MCA 2522 CNC Plate Bending Roll

TECHNICAL SPECIFICATIONS
100% manufactured in Italy by DAVI
Model MCA 2522
Number of rolls 4
Rolls length 8 ft. 2"
Top roll diameter 8.7'' - less deflecting thanks to Planetary Guide technology
Bottom roll diameter 7.9''
Side rolls diameter 6.3''
Smallest possible diameter 9.5'' - thanks to Planetary Guide technology

Rolling speed 6 m/min
Installed power HP 12 (Power Saving Technology)
Power supply 460 V., 60 Hz (different upon request)
Rolls material High resistance, heat treated, tested & certified Carbon Steel
Rolls hardening Induction surface up to 48-62 HR Rockwell C, according to
customer's application and rolls materials
Rolls periph. speed compensation Automatic (no torque loss, no operator setting needed)

Rolls crowning
Top and lower (clamping) rolls are standard crowned to
compensate rolls deflection

Rolls guiding Friction-Free, Mill-Scale-Proof, Lubrication-less planetary
guides

Rolls position Linear transducer with an accuracy of 0.004"
Type of bearing on rolls Self-aligning Heavy Duty double crown spherical roller
bearings

Servo-Tronic©(DAVI patent)
Rolls parallelism Two independent but integrated parallel systems, to prevent
down time in case of electronic bug (virtually never fails)

Rolls rotation drive (DAVI Exclusive) Both clamping rolls are driven in rotation as standard feature
Re-Rolling drive system High Speed Top Roll rotation during re-rolling as standard feature

Transmission drive
(DAVI Exclusive)
Stress-less transmission: both hydro-motors are free to tilt to
absorb the rolls deflection and for cone rolling

Wiring system (DAVI Exclusive)
Roll-by-Wire© digital technology: faster, more accurate and reliable

Rolls tilting for cone bending
(DAVI Exclusive) More than 4'' for easier cone bending, electronically controlled (based on 120'' and longer rolls)Plate clamping hydraulic pressure
Electronically Pre-settable for any thickness
Actuation of yoke & top roll
tilting Hydraulic wide opening, for easier remove of closed shapes
Rolls rotation hydraulic brake Included
Multiple overload safety system Included, through multiple check hydraulic valve