Hydraulic Round Bending Machine Rollmak ST4R 540-30/50

Hydraulic Round Bending Machine Rollmak ST4R 540-30/50


ST4R is a 4-roll hydraulic round bending machine designed for precision sheet metal rolling. This model combines a robust structural build with automated control elements, offering a wide range of standard features and options. It is highly user-friendly and versatile, capable of performing various tasks ranging from standard straight cylinders to complex conical bends.

Features and Advantages

  • Advanced Control System: Features a 7-inch multifunctional touchscreen display and PLC control with manual, semi-automatic, and fully automatic modes to suit various production scenarios.

  • Performance & Precision:

    • Three rotation speeds for optimal material handling.
    • Linear guide system and guide bearings ensure roll stability and an extended service life.

    • One-touch automatic balancing system simplifies the alignment of the rollers.

  • Robust Construction: The frame is manufactured from high-grade ST-52 steel, providing maximum rigidity and long-term durability.

  • Hydraulic Versatility:

    • The top roll features a hydraulic "drop end" and vertical movement (up/down) for easy loading and removal of workpieces.
    • The bottom roll includes pressure regulation to control the contact and quality of the bend.

  • High-Quality Rolls: Induction-hardened and polished rolls (Ck45) provide superior wear resistance and a high-quality surface finish.

  • Comprehensive Safety: Includes overload protection, an emergency stop, light and sound warning signals, and a transparent protective shield for the control panel.

Standard Equipment

  • 7-inch multifunctional touchscreen display.

  • PLC controller with manual, semi-auto, and fully automatic modes.

  • Three-speed roll rotation.

  • ST-52 steel frame and linear guide system.

  • Hydraulic top roll movement and drop end.

  • Adjustable bottom roll pressure and automatic balancing.

  • Induction-hardened and polished rolls.

  • Conical bending device and auxiliary tools for conical shapes.

  • Integrated warning system (visual and audible) and maintenance indicators.

Options

  • CNC Unit: For high-precision programming of complex bending cycles.

  • Laser Safety Barriers: Front or rear laser emergency stop barriers for enhanced operator protection.

  • Infinitely Variable Speed: Provides smooth, seamless adjustment of rotation.

  • Support Systems: Central overhead support and hydraulic side supports for large diameters.

  • Automation & Maintenance: Automatic centralized lubrication, oil cooling system, and feeding/output tables.

  • Interchangeable Top Roll: To adapt to different profiles or material thicknesses.

Technical Specifications

Parameter Value
Working Length 3000 mm
Max. Steel Thickness () 50.0 mm
Pre-bending Capacity 40.0 mm
Top Roll Diameter 540 mm
Bottom Roll Diameter 540 mm
Side Roll Diameter 450 mm
Motor Power 55,0 kW
Dimensions ()
Weight 51000 kg
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