The difference between hydraulic press and mechanical press

Generally speaking, mechanical presses are characterized by fast production speed, while hydraulic presses provide higher flexibility for more complex molding processes.In this article, we will discuss their differences in mechanism and application.

Working principle of mechanical press：

As the name suggests, mechanical presses generate power mechanically.Its main motor is connected to a crankshaft, which circulates punches and a flywheel.In a simple mechanical press, the clutch directly controls the motor.In larger and more complex presses, the flywheel activates the pinion system in motion to rotate the crankshaft.When the motor provides power to the main system, the flywheel stores the kinetic energy and transmits it to the rest of the machine.A larger flywheel will produce a higher level of energy.This enables the mechanical press to achieve high production speed and strength.Especially when dealing with relatively flat and simple workpieces.

Simple setup and operation requirements translate into fast and repeatable results.Mechanical presses are also less prone to leakage because they do not require hydraulic oil to power themselves.However, they lack the length of the stamping stroke, which in turn limits their application.

Although the functions of the two machines are similar, the hydraulic presses are more widely used.This is because they can create very complex shapes and are more economical to maintain.The automotive industry especially often uses hydraulic presses to process various auto parts.On the other hand, mechanical presses are used in applications where speed and output are the main concerns.

Mechanical and hydraulic-Advantages and disadvantages

Let's summarize the advantages and disadvantages of these two types of stamping equipment.When should mechanical equipment be used and when should hydraulic presses be used?

Advantages of mechanical presses +

High production efficiency: this is due to a higher level of control and operating speed, which makes mechanical presses suitable for fast and large-volume production.

Simple setup: Simpler setup and operation requirements reduce upfront and operating costs.

Environmental protection: There is no need to use hydraulic oil to prevent leakage and overflow from adversely affecting the environment.

Disadvantages of mechanical presses -

Limited capacity: fixed stroke length makes mechanical presses unsuitable for applications that require variable stroke length, such as free forging.

High maintenance costs: The replacement cost of components such as crankshafts, flywheels, and brake systems is very high, and usually requires custom manufacturing.