SMC compression molding press machine

Short Description:

Our hydraulic press machine are suitable for composite material moulding:
SMC (Sheet Moulding Compound) components
BMC (Bulk Moulding Compound) components
RTM (Resin Transfer Moulding) components
Different systems are used, depending on the component requirements and the production process. The result: Best parts quality and maximum production reliability – for greater economic efficiency and maximum productivity.

Product Detail

Product Tags

ZHENGXI SMC BMC Hydraulic Press also called hydraulic composites molding press, it is applied in compression moulding of composites material such as SMC,BMC,FRP,GRP and so on. Our SMC Forming presses and press offer the composite industry superiour production capabilities, as well as repair and upgrade options. We are supplying new customs hydraulic molding presses, and ZHENGXI aslo provides a comprehensive list of repair and upgrade options for existing compression molding presses of all makes and models. Our hydraulic molding presses are used to produce an extensive variety of innovative automotive, aerospace, industrial etc.

Machine Features

It is mainly used for the integral forming of thermosetting (FRP) plastics and thermoplastic products. Suitable for the forming of SMC, BMC, DMC, GMT and other bulks and sheets.

Hydraulic system is installed on the top with maintenance platform, environmentally friendly, low noise and easy maintenance.

Multiple-stage slow speed pressure forming, reasonable reserved exhaust time.

With the function of high pressure slow opening mold, suitable for high products.

Quick response of system, numerical control system.

On Site Picture

composite hydraulic press (2)
composite hydraulic press (3)
composite hydraulic press (1)
composite hydraulic press (4)


This machine is mainly suitable for composite material molding; the equipment has good system rigidity and high precision, high life and high reliability. The process for hot press forming meets 3 shifts/day production.

composite hydraulic press (6)
composite hydraulic press (5)

Manufacturing Standards

JB/T3818-99        Technical conditions of hydraulic press
GB/T 3766-2001     General technical requirements for hydraulic systems
GB5226.1-2002      Safety of machinery-Mechanical and electrical equipment-Part 1: General technical requirements
GB17120-97        Press machinery safety technical requirements
JB9967-99          Hydraulic machine noise limit
JB/T8609-97        Press machinery welding technical conditions

3D Drawing

composite hydraulic press (7)

H frame type

composite hydraulic press (8)

4 column type

Machine Parameters

Item Unit YZ71-4000T YZ71-3000T YZ71-2500T YZ71-2000T YZ71-1500T YZ71-1000T
Pressure kN 40000 30000 25000 20000 15000 10000
Max. liquid pressure Mpa 25 25 25 25 25 25
Daylight Mm 3500 3200 3000 2800 2800 2600
Stroke Mm 3000 2600 2400 2200 2200 2000
Working table size Mm 4000×3000 3500×2800 3400*2800 3400*2600 3400*2600 3400*2600
Height above the ground Mm 12500 11800 11000 9000 8000 7200
Foundation depth mm 2200 2000 1800 1600 1500 1400
Down speed Mm/s 300 300 300 300 300 300
Working speed Mm/s 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5
Return speed Mm/s 150 150 150 150 150 150
Total Power kW 175 130 120 100 90 60

Main Body

The design of the whole machine adopts computer optimization design and analyzes with finite element. The strength and rigidity of the equipment are good, and the appearance is good. All welded parts of the machine body are welded by high-quality steel mill Q345B steel plate, which is welded with carbon dioxide to ensure the welding quality.





Cylinder Barrel

  1. Made by 45# forged steel, quenching and tempering
  2. Fine grinding after rolling

Piston Rod

  1. Made by Chilled cast iron, quenching and tempering
  2. The surface is rolled and then chrome-plated to ensure surface hardness above HRC48~55
  3. Roughness 0.8


Adopt Japanese NOK brand quality sealing ring


Guided by copper plating, good wear resistance, ensuring long-term operation of the cylinder


composite hydraulic press (46)
composite hydraulic press (47)

The guide columns (pillars) will be made of C45 hot forging steel and have a hard chrome coating thickness 0.08mm. And do hardening and tempering treatment. The guide sleeve adopts copper guide sleeve, which is more wear-resistant and improves the stability of the machine

Servo System

1.Servo System Composition


2.Servo System Composition








 frame (52)


The life of the button is strictly tested, and it is not damaged by pressing 1 million times. 

Screen and machine fault help, describe screen functions, explain machine alarms, and help users quickly master the machine usage








frame (52)


Electronic ruler acquisition line is processed independently, with strong anti-interference ability 

Digital control of the servo drive and integration with the drive


Servo Driver






frame (52)


The overall busbar capacitor is fully upgraded, and the capacitor with wider temperature adaptability and longer service life is used, and the theoretical life is increased by 4 times; 


The response at 50Mpa is 50ms, the pressure overshoot is 1.5kgf, the pressure relief time is 60ms, and the pressure fluctuation is 0.5kgf.


Servo Motor


PHASE Series


frame (52)


The simulation design is carried out by Ansoft software, and the electromagnetic performance is superior;Using high-performance NdFeB excitation, the iron loss is small, the efficiency is higher, and the heat is smaller;


3.Advantages of Servo System

Energy saving


Compared with the traditional variable pump system, the servo oil pump system combines the fast stepless speed regulation characteristics of the servo motor and the self-regulating oil pressure characteristics of the hydraulic oil pump, which brings huge energy saving potential, and the energy saving rate can reach up to 30%-80%.



The response speed is fast and the response time is as short as 20ms, which improves the response speed of the hydraulic system.


The fast response speed guarantees the opening and closing accuracy, the position accuracy can reach 0.1mm, and the special function position positioning accuracy can reach ±0.01mm.

The high-precision, high-response PID algorithm module ensures stable system pressure and pressure fluctuations of less than ±0.5 bar, improving product quality.

Environmental protection

Noise: The average noise of the hydraulic servo system is 15-20 dB lower than that of the original variable pump.

Temperature: After the servo system is used, the hydraulic oil temperature is reduced overall, which enhances the life of the hydraulic seal or reduces the power of the cooler.

Safety Device


Photo-Electrical Safety Guard Front & Rear


Slide Locking at TDC


Two Hand Operation Stand


Hydraulic Support Insurance Circuit


Overload Protection: Safety Valve


Liquid Level Alarm: Oil level


Oil temperature Warning


Each electrical part have overload protection


Safety blocks


Lock nuts are provided for movable parts

All action of press have safety interlock function, e.g. movable worktable will not work unless cushion return to initial position. Slide can not press when movable worktable is pressing. When conflict operation happen, alarm shows on touch screen and show what's the conflict.

Hydraulic System


1.Oil tank been set forced cooling filtering system(industrial plate-type water cooling device, cooling by circulating water, oil temperature≤55℃,make sure machine can steadily pressing in 24 hours.)

2.The hydraulic system adopts integrated cartridge valve control system with fast response speed and high transmission efficiency.

3.The oil tank is equipped with an air filter to communicate with the outside to ensure that the hydraulic oil is not polluted.

4.The connection between the filling valve and the fuel tank uses a flexible joint to prevent vibration from being transmitted to the fuel tank and completely solve the problem of oil leakage.


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