Injection Molding Machines: Types and Advantages


Injection molding is a manufacturing method that may produce components from various materials, including thermoplastic and thermoset.

Injection molding machines inject molten plastic into the cavity of a mold, where it solidifies and hardens into a hole as it cools.

Injection molding machines come in a wide variety of forms, each of which offers its own particular set of advantages. In this article on our site, we will talk about the three most prevalent kinds of injection molding machines: hydraulic, electric, and servo-electric. In addition, we will go through the many advantages of the various types of devices.

The plastic injection molding technique is a flexible manufacturing method that may be used to produce components made from a broad range of different materials. There is a wide range of injection molding machines available on the market today, and each has its own advantages.

We have covered the three most prevalent varieties of injection molding machines in this article, which are as follows:

  1. Hydraulic Injection Molding Machine
  1. Electric Injection Molding Machine
  1. Servo-electric Injection Molding Machine
  3. 1.Hydraulic Injection Molding Machines

On the market, hydraulic injection molding machines make up the majority of the available options for devices. The price of these machines is often lower than that of electric or servo-electric counterparts, and they are simple to run.

The Advantages that Come Along with Using Hydraulic Injection Molding Machines

  • Utilizing injection molding machines that are powered by hydraulics offers several advantages.
  • They are quicker and more exact than other sorts of equipment, as well as more energy efficient and less noisy than traditional counterparts.
  • Hydraulic machines have a longer lifetime and are simpler to maintain than their mechanical counterparts.
  • In addition, hydraulic machines are more adaptable and may be used for a broader range of items than their mechanical counterparts. As a consequence of this, they are a fantastic option for any company that is interested in enhancing the performance of its manufacturing procedure.

  1. 2.Electric Injection Molding Machines

Electric injection molding machine has seen a trend toward greater utilization in recent years. They provide more control over the injection process and are more energy-efficient than hydraulic devices. An electric motor creates pressure to inject molten plastic into the mold cavity in electric machines. The term “electric injection molding” refers to this procedure.

Hydraulic injection molding machines utilize pressure from a hydraulic pump to inject molten plastic into the mold cavity. The plastic is then injected using this pressure.

The Advantages that Come Along with Using Electric Injection Molding Machines

  • Electric injection molding machines provide several advantages compared to their hydraulic equivalents.
  • They use less energy, which might result in cheaper overall running expenses for the business.
  • Additionally, they produce fewer pollutants and generate less noise, contributing to their increased friendliness to the environment.
  • In addition, electric machines have a higher degree of precision, resulting in higher-quality goods.
  • They are also simpler to maintain, which results in less time lost due to breakdowns and repairs.
  • Because electric injection molding machines provide various benefits over hydraulic machines, many firms choose to use electric machines instead of hydraulic machines.

  1. 3.Servo-electric Injection Molding Machines

The most technologically sophisticated kind of equipment now available is known as a servo-electric injection molding machine.

They need less power to operate than hydraulic or electric devices and provide a higher level of control over the injection procedure. The injection of molten plastic into the mold cavity is accomplished by servo-electric machines using a servo motor to produce pressure, which is then utilized to inject the plastic.

The Advantages that Come Along with Utilizing Servo-electric Injection Molding Machines

  • The development of the servo-electric injection molding machine is widely regarded as among the industry’s most significant recent advancements. Compared to their hydraulic equivalents, these machines provide various benefits, the most notable of which are decreased energy consumption, higher accuracy, and enhanced repeatability.
  • Electric motors, which are more efficient than hydraulic pumps and can give exact control over injection pressure and speed, are what power servo-electric machines. Molding complicated pieces with strict tolerances enables increased precision throughout the process. In addition, servo-electric machines produce significantly less noise than hydraulic machines do, making them an excellent choice for usage in settings that are hypersensitive to disturbances in the ambient level of sound.
  • The fact that servo-electric injection molding machines are substantially more compact and lighter than their hydraulic counterparts is another benefit offered by these machines. Because of this, they are simpler to install, and the total footprint of the injection molding process is reduced.
  • In addition, due to their less complicated design and absence of moving parts, servo-electric machines often have a life far longer than hydraulic machines.
  • In general, servo-electric injection molding machines provide various benefits that make them the superior option for many applications. These advantages make them the favored choice. These machines have a lower need for energy to operate, a higher accuracy, and enhanced repeatability, all of which may contribute to increased production and decreased expenses.


There are advantages to be had with each of the three different kinds of injection molding machines. Hydraulic machines are the most frequent and the least expensive, while servo-electric machines are the most modern and allow the most control over the injection process. Hydraulic machines are used in the majority of injection molding facilities. Electric devices are located in the middle, providing a good balance of control and cost.