Why does EP Series Electric CNC Screw Press reduce energy consumption in production?
2026-06-11
In modern forging and stamping, electric screw presses are replacing outdated hydraulic and mechanical machines. OurEP Series CNC Electric Screw Pressconsumes 35–45% less electricity compared to hydraulic analogues of the same rated power. This is achieved through recuperation of braking energy and intelligent torque control on the servomotor. Our specialists have implemented such presses at the KAMAZ and Uralmash plants, where the average savings per shift are confirmed by measurement reports.
Electric Screw Drive Energy Saving Technology
CompanyQingdao Hongdao Metalworking Equipment Companydeveloped the EP series based on permanent magnet synchronous motors. Unlike hydraulics, where the pump is constantly idling, ourEP Series CNC Electric Screw Pressactivates the servo drive only during the stamping process. During the pause between cycles, consumption drops to 5% of peak. An additional contribution is made by the recovery system: during the reverse stroke of the press, kinetic energy is converted into electricity and returned to the general network of the workshop through a smart inverter.
Technical parameters of the EP-400 model
We offer presses with force from 100 to 2500 tons. Below are the characteristics of the most popular model in Russia, EP-400 (400 tons), adapted to EAEU standards and IE4 class energy efficiency requirements.
| Parameter | Value for EP-400 |
| Nominal force | 400 ts (4000 kN) |
| Maximum impact energy | 28 kJ |
| Number of strokes per minute | 40–70 (CNC adjustable) |
| Servo motor rated power | 55 kW (peak 140 kW) |
| Average power consumption in real cycle | 0.21 kWh per stamping (part weighing 3 kg) |
| Regenerative drive efficiency | 94% (against 72% in hydraulics) |
| Standby power consumption | 1.2 kW (only for CNC and cooling) |
Thanks to the direct application of torque to the screw pair, ourEP Series CNC Electric Screw Pressdoes not require a flywheel or friction clutch. This eliminates friction losses and reduces lubricant consumption. For Russian clients, we have provided a “thermal start” function at subzero temperatures in unheated workshops.
Results of implementation at Russian enterprises
One of our clients, a manufacturer of automotive components in the Nizhny Novgorod region, replaced two hydraulic presses with oneEP Series CNC Electric Screw PressfromQingdao Hongdao Metalworking Equipment Company. Over an 8-hour shift, energy savings amounted to 312 kWh. At a tariff of 6.5 rubles/kWh, this is more than 60,000 rubles in savings per month. Added bonus: Die wear is reduced by 28% due to precise control of impact speed. Our experts help calculate the payback before signing the contract.
Frequently Asked Questions: Why does EP Series CNC Electric Screw Press reduce energy consumption in production?
Question 1: How can I select the correct power of the EP series press for my parts, so as not to pay for excess energy?
Answer: Our engineers use the “required work of deformation” method. To do this, we request a drawing of the part, material and thickness. EP-200 is suitable for stamping up to 6mm thick from 45 steel. For thicker sheets (10-12mm) we recommend EP-400. We are against purchasing over-powered products. Thanks to the servo drive, even the EP-630, when working with small parts, consumes proportionally to the load. You can send us a sample for test stamping on our equipment in Qingdao.
Question 2: Are special foundations and floor reinforcements required when installing an electric CNC screw press instead of a hydraulic one?
Answer: Due to the absence of hydraulic shocks and a flywheel, the dynamic loads of the EP are 3 times lower than those of a crank press of the same strength. For the EP-400 model, a 300 mm thick concrete floor with vibration insulation made from rubber pads is sufficient. No need for oil pans or complex filtration systems. Installation takes 2 days by your mechanics under our remote control. We provide video instructions for aligning the screw pair.
Question 3: What routine maintenance is required to maintain low energy consumption for 10 years?
Answer: The main element is the lubrication of the screw pair (special high-temperature grease is applied once every 2000 operating hours). Check the servo power terminals for tightness once a quarter. Every 3 years, the force sensor (strain gauge) must be calibrated at our service stand. Thanks to recuperation and the absence of brake pads, the EP does not require replacement of friction linings. This reduces annual maintenance costs by 70% compared to hydraulics.
Why choose our CNC electric screw presses
CompanyQingdao Hongdao Metalworking Equipment CompanyproducesEP Series CNC Electric Screw Presswith a full cycle of quality control. Our advantages: 5-year warranty on the frame, availability of service centers in Moscow and Yekaterinburg, complete documentation in Russian and adaptation to GOST standards. When purchasing two presses, we provide an 8% discount on commissioning. Request an energy savings estimate for your process operations.
