HOGI Hybrid Servo CNC press brake
HOGI Pump-Controlled Dual Servo CNC Bending Machines ESVP Series
HOGI High-Speed Pump-Controlled Servo CNC Press Brake is designed for high-efficiency, precision bending of plates over 5 mm:
- Bending capacity: Suitable for plates > 5 mm
- Speed: 50% faster cycle time
- Energy efficiency: 50% improvement
- Oil consumption: 70% reduction, eco-friendly
- Accuracy: Positioning precision of 0.005 mm
- Reliability: Minimal leakage risk
- Noise level: < 60 dB in all operating modes
- Cost: Lower installation and maintenance costs
- Temperature control: Continuous oil temperature ≤ 40°C
- Design: Compact structure, no complex hydraulic piping required
HOGI Pump-Controlled Dual Servo CNC Bending Machine — ESVP Series
The HOGI ESVP Series (Electro-Hydrostatic Pump Unit) represents a fundamental rethinking of hydraulic press brake drive technology. By replacing the traditional fixed-speed motor and proportional valve assembly with a dual servo motor and bidirectional internal gear pump combination, the ESVP series delivers 70% energy savings, positioning accuracy of 0.005mm, and continuous operating oil temperature below 40°C — all in a simpler, more compact installation than conventional hydraulic systems. Designed for sheet metal bending of material thickness above 5mm, the ESVP series combines the force of hydraulic drive with the precision and efficiency of servo control.
- 50% faster cycle time — Y-axis down speed 220mm/sec, return speed 200mm/sec; 125T model completes a full cycle in approximately 2.8 seconds at 50mm return height
- 70% energy saving — servo motors operate on-demand with no throttling loss; oil is distributed as needed with no idle consumption
- 70% less hydraulic oil — bidirectional gear pump system drastically reduces oil volume requirements versus conventional hydraulic systems
- 0.005mm positioning accuracy — repeated slider positioning accuracy ±0.01mm, peak accuracy 0.005mm
- Noise below 60dB — bidirectional gear pump reduces noise across all operating modes including full-speed operation
- Oil temperature below 40°C — continuous operation in 38°C ambient without exceeding 50°C oil temperature, reducing seal wear and leakage risk
- Simplified installation — eliminates motor, oil pump, tank cleaning, and complex piping procedures; significantly reduces installation labor and time
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HOGI ESVP Series — Technical Advantages
True On-Demand Energy Consumption: Unlike conventional hydraulic systems where the motor runs continuously at fixed speed regardless of machine state, the ESVP dual servo motors accelerate only when the slider moves and consume near-zero energy during work gaps. With no throttling loss in the hydraulic circuit, the ESVP series achieves a genuine 70% energy saving rate compared to traditional three-phase asynchronous motor models — not a theoretical figure, but a measurable reduction in electricity cost per shift.
High-Speed Bending Cycle: The bidirectional internal gear pump delivers fast, smooth slider movement in both directions. Y-axis down speed reaches 220mm/sec with a return speed of 200mm/sec, reducing non-bending time per cycle. For a 125T model at 50mm return height, the full slider cycle completes in approximately 2.8 seconds — a 50% improvement in cycle time compared to conventional hydraulic models of the same tonnage.
Low Thermal Load and Extended Hydraulic System Life: The compact closed hydraulic circuit and on-demand pump operation generate significantly less heat than conventional systems. In a 38°C ambient environment, continuous operating oil temperature stays below 50°C. Lower oil temperature directly reduces seal degradation, cylinder wear, and leakage risk — extending hydraulic component service life and reducing maintenance frequency.
Ultra-Quiet Operation: The bidirectional internal gear pump produces substantially less noise than piston pump and proportional valve assemblies. Even at maximum slider speed, noise levels remain below 60dB — enabling the ESVP series to operate in noise-sensitive production environments such as precision electronics, medical devices, and office-adjacent workshops.
Sub-Millimeter Positioning Accuracy: The closed-loop servo control system achieves repeated slider positioning accuracy of ±0.01mm, with peak accuracy reaching 0.005mm. This level of precision — equivalent to or exceeding proportional valve control systems — is the result of direct servo motor speed control over pump output flow, eliminating the valve response lag that limits conventional electro-hydraulic systems.
Dramatically Simplified Installation and Lower Ownership Cost: The ESVP drive unit eliminates the motor, separate oil pump, external tank cleaning, and the complex hydraulic piping installation required by conventional systems. Manufacturers install the ESVP unit as a compact assembly, reducing installation labor costs and time-to-production. Over the machine’s service life, reduced oil volume (70% less hydraulic oil), lower energy consumption, and fewer hydraulic components requiring maintenance deliver substantially lower total cost of ownership.
Case Studies
Customer Testimonials
Frequently Asked Questions
What is the ESVP system and how is it different from a conventional hydraulic press brake?
How is 70% energy saving achieved?
What positioning accuracy does the ESVP series achieve?
Why does the ESVP series use less hydraulic oil?
What material thickness is the ESVP series designed for?
Is the ESVP series harder to maintain than a conventional hydraulic press brake?
Why Choose HOGI ESVP Pump-Controlled Dual Servo CNC Bending Machines
The HOGI ESVP Series was developed after years of continuous research into servo pump control technology for the CNC bending machine industry. The result is a system that solves the three fundamental problems of conventional hydraulic press brakes simultaneously: high energy consumption, complex installation, and the accuracy ceiling imposed by proportional valve control. By combining servo motor speed control with bidirectional internal gear pump hydraulics, HOGI has produced a machine that is faster, more precise, more efficient, and simpler to own than anything the traditional hydraulic category offers.
The ESVP series is the right choice for fabricators who need heavy-gauge hydraulic bending force but cannot afford the energy costs, oil management overhead, and acoustic environment impact of conventional hydraulic systems. It is equally suited to new installations where installation simplicity and operational efficiency are priorities, and to replacement projects where the goal is to reduce the running cost of an existing hydraulic press brake operation.
Each HOGI ESVP machine is built to strict manufacturing quality standards and supported by HOGI’s comprehensive after-sales service network, ensuring that the efficiency and accuracy advantages of the ESVP system are maintained across the machine’s full operational life.
Technical Support and Comprehensive After-Sales Service
Our service team includes engineers with specific expertise in servo pump control hydraulic systems and ESVP drive unit diagnostics — equipped to resolve issues that general hydraulic technicians may not be familiar with.
The ESVP system’s simplified architecture makes remote fault diagnosis highly effective. Most operational issues can be identified and resolved via video call or CNC system data review without requiring an on-site visit.
We supply genuine replacement parts for all ESVP drive components including servo motors, bidirectional gear pumps, CNC control modules, and linear scale feedback systems — ensuring repair quality and system integrity.
Our team provides full installation guidance and commissioning support for ESVP systems, covering drive unit mounting, CNC parameter setup, axis calibration, and initial production verification — ensuring the machine performs to specification from day one.
For existing customers, we offer energy consumption audits comparing ESVP operation against previous machine baselines, providing documented evidence of energy savings for internal reporting and cost-benefit analysis.
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HOGI Pump-Controlled Dual Servo CNC Bending Machines ESVP Series — Specification Page. This page provides technical parameters, CNC axis configuration, model data, and engineering highlights for the ESVP electro-hydrostatic pump unit (servo pump-control) press brake system. For product overview, application images, case studies, and commercial information, please refer to the Product Description tab.
Model Range
CNC Axis Explanation
| CNC Axis | Function |
| Y1 | Left cylinder electro-hydraulic synchronous closed-loop control axis |
| Y2 | Right cylinder electro-hydraulic synchronous closed-loop control axis |
| X (X1, X2) | Back gauge moving axis (back and front) |
| R (R1, R2) | Back gauge moving axis (up and down) |
| Z1, Z2 | Two stop fingers moving axis (left and right) |
| V | CNC crowning axis |
Technical Specifications — 160T/3200MM (Reference Model)
| HOGI ESVP Dual Servo Pump-Controlled CNC Hybrid Press Brake — 160T/3200MM 4+1 Axis / 6+1 Axis / 8+1 Axis with TAIWAN SYNTEC 2D Programming CNC Controller |
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|---|---|---|---|
| No. | Item | Unit | 160T/3200 |
| 1 | Bending force | kN | 1600 |
| 2 | Bending length | mm | 3200 |
| 3 | Columns distance | mm | 2600 |
| 4 | Throat depth | mm | 450 |
| 5 | Cylinder stroke (Y1, Y2) | mm | 200 |
| 6 | Die loading height (Daylight) | mm | 420 |
| 7 | Y-axis down speed | mm/sec | 220 |
| 8 | Y-axis return speed | mm/sec | 200 |
| 9 | Y-axis working speed | mm/sec | 15 |
| 10 | Y-axis accuracy | mm | ±0.01 |
| 11 | Work-piece linearity | mm | 0.3/m |
| 12 | Pump displacement | cc/r | 16cc/r × 2 |
| 13 | X-axis (R-axis) speed | mm/sec | 400 |
| 14 | X-axis (R-axis) accuracy | mm | ±0.01 |
| 15 | Front sliding arms | pcs | 2 |
| 16 | Bending angle accuracy | arc-min | ≤±18 |
| 17 | Back gauge finger stopper | pcs | 4 |
| 18 | Main motor | kW | 8.5 kW × 2 |
| 19 | Dimensions | Length (mm) | 3550 |
| Width (mm) | 1750 | ||
| Height (mm) | 2600 | ||
| 20 | Weight | kg | 11000 |
Drive System Technical Principle
Electro-Hydrostatic Pump Unit (ESVP) Drive Principle: The ESVP system replaces conventional valve-controlled hydraulic circuits with a direct servo motor + bidirectional internal gear pump combination. The servo motor is coupled to the pump through a rigid coupling — eliminating intermediate valves, flow dividers, and pressure relief circuits. Cylinder movement direction and speed are governed entirely by the servo motor’s rotational direction and speed. The CNC system issues electrical signals to the servo drives, which in turn command the pump to generate precisely the required oil flow on demand. This closed-loop electro-hydrostatic architecture achieves sub-millisecond response times, repeatable positioning accuracy of ±0.01 mm, and peak accuracy of 0.005 mm while consuming only a fraction of the energy of equivalent proportional valve systems.
Technical Highlights
1. Positioning Precision and Closed-Loop Synchronization: Y1 and Y2 axes operate under independent electro-hydraulic synchronous closed-loop control, achieving repeat positioning accuracy of ±0.01 mm and peak accuracy of 0.005 mm. Dual servo feedback eliminates ram tilt errors that are common in single-feedback hydraulic systems, ensuring workpiece linearity within 0.3 mm/m throughout the full bending length.
2. Energy Efficiency and Hydraulic Oil Reduction: On-demand oil distribution via bidirectional gear pumps eliminates throttling losses — a root cause of energy waste in proportional valve systems. Energy consumption is reduced by up to 70% compared to conventional hydraulic press brakes of equivalent capacity. Hydraulic oil volume is simultaneously reduced by 70%, lowering both consumable cost and environmental impact from oil disposal and leakage containment.
3. Cycle Speed and Thermal Stability: Fast approach speed of 220 mm/sec and return speed of 200 mm/sec, controlled directly by servo motor speed — without hydraulic pressure switching delays. At 38°C ambient temperature, continuous operating oil temperature does not exceed 50°C, eliminating thermal expansion errors and the angular drift that degrades accuracy in conventional hydraulic machines during sustained production runs.
4. Maintenance Simplicity and Installation Cost: The ESVP unit integrates motor, pump, and reservoir into a compact assembly that replaces the motor-pump-piping-tank complex of conventional hydraulic systems. Routine maintenance is limited to servo drive inspection, oil level check, and gear pump condition monitoring. Complex piping assemblies, tank pre-cleaning, and valve block servicing are eliminated — reducing both periodic maintenance cost and unplanned downtime risk.
HOGI ESVP Pump-Controlled Dual Servo CNC Bending Machine — Live Performance
Live Demonstration Highlights — ESVP Pump-Controlled Technology
Watch the ESVP-160T/3200 bending 6mm stainless steel plates at full speed. This video showcases the unique dual-servo pump control: instantaneous pressure build-up, near-silent operation (<60dB), and real-time CNC compensation for crowning. Compare with conventional hydraulic machines — the difference in cycle time and thermal stability is immediately visible.
- ⚡ 50% Faster Cycle Time: Actual footage shows 3.2 seconds per bend vs. 6 seconds on traditional valve-controlled press brake.
- 🌿 70% Energy Saving Confirmation: Power meter display demonstrates idle consumption under 0.8kW and ultra-low active energy.
- 🎯 0.005mm Positioning Precision: Real-time SYNTEC readout showing Y1/Y2 positioning with micro accuracy even during reversal.
- 🔇 Workplace Noise Level: Independent decibel meter shows 56dB max during high-speed bending — no ear protection needed.
- ❄️ Sustained Low Oil Temperature: Thermal camera reveals oil temperature staying ≤40°C after 30 mins heavy-duty cycling.
Engineered for Next-Generation Metal Forming
The ESVP series bridges the gap between all-electric and traditional hydraulics, offering the best of both: raw power for thick plates (>5mm) combined with servo precision and green efficiency. Ideal for aerospace, automotive structural parts, and renewable energy components where accuracy, repeatability, and carbon footprint matter. The pump-controlled architecture eliminates leakage risks, reduces noise, and ensures stable production even in high-ambient-temperature workshops.