Ermaksan EVO-IV Press Brake for Laser-Cut Sheet Metal

The Ermaksan EVO-IV makes sense for a job shop that bends varied laser-cut blanks and needs a configurable CNC press brake, especially when intermittent utilization makes the servo-hybrid operating profile worth measuring. It is not a universal answer: bend length, forming force, tooling, open height, stroke, backgauge movement, controls, and safeguarding still determine fit.

Where the EVO-IV fits

The EVO-IV family covers standard working lengths from 1.27 to 6.1 meters and standard capacities from 40 to 600 tons. That range lets a shop size the selected machine around recurring bend length and forming-force requirements instead of treating the EVO-IV as one fixed brake. The 600-ton listing specifies a maximum 375 mm stroke, 675 mm daylight, and 510 mm throat depth, but those figures apply to that listed configuration rather than to every EVO-IV machine.

That configuration range can serve high-mix work involving brackets, panels, enclosures, channels, guards, frames, and other formed sheet-metal components cut on a laser. The application fit is an inference from the machine’s capacity range, axis arrangement, crowning, tooling, and control options—not a published independent throughput result.

What the servo-hybrid architecture changes

The EVO-IV combines 100% servo motor technology with an SPVM/SPLM-based closed-loop hydraulic system. Servo-controlled movement includes the main motor and backgauge motors, while the architecture is designed to optimize speed and force for each workpiece. Hydraulic power is supplied when needed rather than following the continuous-pump pattern associated with conventional hydraulic brakes.

The operating consequence matters most in a department with meaningful idle, standby, or intermittent production time. The machine is listed with a 130-liter oil tank and up to approximately 65% energy-saving potential under benchmark conditions. Noise reduction of up to approximately 15 dB is presented as a comparative target. Neither figure guarantees the result for every machine length, tonnage, option package, material mix, or production schedule.

The closed-loop assembly integrates the motor, pump, filter, and main block into a compact layout intended to simplify maintenance access and reduce potential failure points. A buyer should test that claim against the shop’s measured idle time, production load, oil volume, noise, hydraulic maintenance history, and utilization rather than treating the servo-hybrid label as a stand-alone return-on-investment case.

Size the brake from the formed part

Air bending turns each laser-cut blank into a tooling and machine-envelope decision. The selected V-die opening, punch radius, material type and thickness, bend length, desired dimensions, and tolerance affect the forming method and the required force. An air-bending force chart belongs in the die and tonnage review; nominal press capacity alone is not enough.

Radius work deserves additional attention. Springback, material variation, surface marking, tool design, and the required finished dimensions can change the result, particularly when the part requires a large or controlled radius. Representative drawings should be reviewed with the proposed punch and die combination rather than evaluated from thickness alone.

Open height and stroke determine whether the selected tool stack can form and release the part. Holders and adapters consume available open height, and deep channels or boxes generally require more opening to accommodate taller flanges. A brake with sufficient nominal tonnage can still be unsuitable if the tooling stack, finished geometry, or removal path exceeds the usable opening or stroke.

Motorized crowning is a standard EVO-IV feature. CNC-controlled deflection compensation can help maintain more consistent bend angles across a longer working length when the machine, tooling, material, and program are correctly matched. It does not remove the need to control material variation or verify the formed feature.

Match axes, controls, and tooling to the part mix

The EVO-IV uses a standard six-axis machine description: Y1, Y2, X, R, Z1, and Z2. The standard backgauge is separately described as four-axis X, R, Z1, and Z2. Optional five-axis and ATF-type six-axis backgauge systems address parts that need more independent finger movement or more complex positioning.

A Delem DA-66T 2D touchscreen controller is standard, while the DA-69T is an optional 3D controller. The DA-69T adds 2D and 3D programming, automatic bend-sequence calculation, collision detection, and full 3D machine setup with multiple tool stations. Those functions can expose tool, machine, and part-feasibility problems before a changing job reaches the operator, but they have the most value when part variation and repeat work justify structured programming.

Angle-measurement systems and barcode reading are optional or configuration-dependent. Angle measurement may help when material variation creates recurring first-piece corrections. Barcode reading can support program selection or part identification when the shop has a controlled cut-to-bend workflow. Neither option replaces stable material data, proven programs, operator training, or a defined production problem.

Tooling and clamping deserve the same attention as the press-brake frame. The proposed setup should be checked against the shop’s American, European, WT-style, or other tooling inventory, sectionalization, custom radii, tool lengths, clamping arrangement, changeover method, and storage practice. Existing tooling should not be assumed to transfer without confirming the selected holders, interfaces, clearances, and load requirements.

Keep safeguarding inside the machine decision

Powered press brakes form sheet metal between dies but retain point-of-operation, moving-workpiece, and accidental-cycling hazards. Operators may install dies, position stock, activate the cycle, and remove completed parts, so the intended operating method needs suitable point-of-operation protection, rear-area access control, training, and safe maintenance procedures.

Presence-sensing devices, two-hand controls, pullbacks, restraints, physical barriers, or restricted access may be appropriate depending on the machine and process. Maintenance outside normal production operations requires hazardous-energy control under applicable lockout/tagout procedures. The safeguarding method should be specified with the selected machine, tooling, handling method, and access pattern rather than added after the equipment decision.

Use representative parts to choose the configuration

The most useful EVO-IV review compares representative part families instead of one easy bend. Bring drawings or files showing material grade, thickness, bend length, inside radius, flange geometry, bend sequence, finished dimensions, largest formed feature, deepest box, and maximum part weight. Include batch sizes, changeover frequency, idle periods, and the share of work that repeats often enough to justify dedicated tooling, barcode identification, angle measurement, or 3D programming.

Compare those parts with the proposed V-die openings, punch radii, tool lengths, clamping system, Y1 and Y2 travel, X/R/Z1/Z2 positioning, additional backgauge needs, crowning, open height, stroke, material handling, and safeguarding method. Current control files, CAD/CAM or offline-programming practices, and the data handoff from laser cutting to bending will show whether the selected controls solve a real workflow gap.

The Ermaksan EVO-IV is most compelling when a shop needs flexible CNC air bending for varied laser-cut parts and can connect the servo-hybrid operating profile to measured utilization. It is a weaker fit when the decision depends only on the energy percentage, when optional features are added without a defined problem, or when tooling and finished-part geometry have not been checked against the selected machine envelope.

I’m Louie Aviles, a Mac-Tech Sales Executive covering Illinois, Iowa, and the greater Midwest. I can help assess whether the EVO-IV fits your laser-cut part mix, bend geometry, material range, tooling, control workflow, current brake limitations, and required capacity. Bring representative part drawings or files, material data, batch sizes, existing tooling information, and the problems you need the new press brake to solve so Mac-Tech can help evaluate the appropriate configuration and options.