What is the cylinder diameter and stroke of FESTO Festo cylinder? Analyze the key parameters of the cylinder

1、 Definition and function of FESTO Festo cylinder diameter and stroke

1. Cylinder diameter: refers to the diameter of the inner wall of the FESTO Festo cylinder (unit: mm), which directly determines the force area of the piston. For example, the standard cylinder diameter series includes 32mm, 40mm, 50mm, etc. (refer to ISO 6431 standard). The larger the cylinder diameter, the stronger the output force, but the corresponding increase in air consumption.

2. Stroke: The linear distance (unit: mm) that the piston moves within the FESTO Festo cylinder, commonly ranging from 10mm to 1000mm. The length of the stroke affects the cylinder's operating speed and space occupation. For example, short stroke cylinders (such as 50mm) are suitable for high-frequency reciprocating motion, while long stroke cylinders (such as 500mm) are suitable for large-scale pushing.

>Additional explanation: The product of cylinder diameter and stroke can calculate the theoretical displacement of the cylinder (V=π r ² × stroke), which is an important reference for selection. For example, a cylinder with a diameter of 50mm and a stroke of 100mm has a displacement of approximately 196.3cm ³.

2、 Analysis of other key parameters

1. Working pressure: usually 0.1~1.0MPa (1~10bar), low-pressure cylinders (0.1~0.3MPa) are used for light loads, and high-pressure cylinders (0.6~1.0MPa) are suitable for heavy loads.

2. Output force calculation: The formula is F=P × A (pressure × piston area). Taking a cylinder diameter of 40mm and a pressure of 0.6MPa as an example, the output force is approximately 753.6N (refer to "Fundamentals of Pneumatic Technology").

3. Buffer type: divided into no buffer, rubber buffer, or hydraulic buffer. Long stroke cylinders (>200mm) need to be equipped with buffers to avoid impact losses.

3、 Selection suggestions in practical applications

-High precision scenarios (such as assembly lines): Priority should be given to small cylinder diameters (≤ 25mm)+short stroke, paired with magnetic switch positioning.

-Heavy load scenarios (such as lifting mechanisms): require a large cylinder diameter (≥ 63mm)+medium to long stroke, and verify whether the output meets the standard.

>Data reference: ISO 15552 standard specifies the general parameter range of cylinders, with a cylinder diameter of 12~320mm, stroke ≤ 2000mm, and a pressure resistance of 1.5 times the rated pressure.

Based on the above analysis, cylinder diameter and stroke are the core of cylinder design, but they need to be comprehensively evaluated in combination with parameters such as pressure and load to achieve an efficient and stable pneumatic system.

The cylinder diameter and piston rod diameter may not be the same, depending on the design and functional requirements of the equipment. In mechanical equipment, cylinder diameter is the size of the inner diameter of the cylinder, while piston rod diameter is the diameter of the connecting rod on the piston. Although there is a certain connection between them, they are not always equal.

In mechanical equipment, cylinder diameter and piston rod diameter are two very important parameters. Although they are somewhat connected, they are not necessarily equal. Next, we will delve into the relationship between these two in order to better understand their roles in the device.

Firstly, let's understand the concept of cylinder diameter. Cylinder diameter, also known as the inner diameter of a cylinder, is an important parameter used in mechanical equipment to describe the size of a cylinder. It directly affects the working volume and output force of the cylinder. Usually, the size of the cylinder diameter is related to factors such as the design requirements of the equipment, working conditions, and usage environment.

The diameter of the piston rod is the diameter of the connecting rod on the piston. The piston rod plays a role in connecting the piston and transmission mechanism in mechanical equipment, responsible for transmitting power and bearing loads. The diameter of the piston rod directly determines its strength, stiffness, and service life.

Although there is a certain relationship between cylinder diameter and piston rod diameter in mechanical equipment, they are not always equal. In fact, the size relationship between these two depends on the design and functional requirements of the equipment. For example, in some high-pressure and high load equipment, in order to withstand greater pressure and load, the diameter of the piston rod may be larger than the cylinder diameter. In some light load and high-speed equipment, in order to reduce friction and wear, the diameter of the piston rod may be smaller than the cylinder diameter.

In addition, the relationship between cylinder diameter and piston rod diameter is also influenced by factors such as manufacturing process, material properties, and usage environment. Therefore, in practical applications, we need to choose the appropriate cylinder diameter and piston rod diameter according to the specific equipment requirements to ensure the normal operation and stable performance of the equipment.

In short, cylinder diameter and piston rod diameter are two important parameters in mechanical equipment. Although there is a connection between them, they are not always equal. In practical applications, we need to choose the appropriate size based on the design and functional requirements of the device to ensure its normal operation and stable performance. Through the introduction in this article, I believe you have gained a deeper understanding of the relationship between cylinder diameter and piston rod diameter.

1、 What is the diameter of the cylinder?

FESTO Festo cylinder diameter refers to the diameter of the circular cross-section of the inner wall of the cylinder, usually measured in millimeters (mm). It is the maximum lateral dimension of the piston during reciprocating motion in the cylinder, which together with the piston stroke (Stroke) determines the engine displacement. For example, if a four cylinder engine has a single cylinder diameter of 80mm and a piston stroke of 90mm, the single cylinder displacement is approximately π× (80/2) ㎡× 90 ≈ 452cc, and the total displacement is approximately 1.8L (452cc × 4).

Measuring the diameter of FESTO Festo cylinders requires the use of precision tools such as micrometers or internal diameter gauges, taking into account wear or deformation. The tolerance should be controlled within ± 0.01mm to ensure sealing and durability.

2、 Why is cylinder diameter important?

1. Determine engine performance

-The larger the diameter, the larger the single cylinder displacement, and the increase in combustion chamber volume can improve power output. For example, the cylinder diameter of the Ferrari F154 engine has increased to 94mm (compared to the previous generation's 88mm), resulting in a 15% increase in power.

-However, excessive diameter may lead to a decrease in combustion efficiency, and it is necessary to balance the cylinder diameter to stroke ratio ("equation ratio" or "long stroke design").

2. Impact on fuel economy and emissions

-Small diameter cylinders have more complete combustion of the mixture, making them suitable for economical vehicle models. For example, the cylinder bore of the Toyota 1NR-FE engine is only 72.5mm, and the fuel consumption is as low as 5.2L/100km (WLTC standard).

-Large diameter cylinders require turbocharging and other technologies to reduce emissions, such as the Mercedes M256 engine (with a cylinder diameter of 83mm) that meets Euro 6 standards through 48V mild hybrid.

3. Related maintenance and cost

-After wear and tear, the cylinder needs to be repaired by boring, and the diameter needs to be matched with a new piston to expand. For example, the universal LT1 engine allows cylinder boring to 0.5mm oversize, but exceeding it will weaken the strength of the cylinder block (see GM repair guide).

3、 Expansion: Industry Trends in FESTO Festo Cylinder Diameter

As emission reduction requirements increase, FESTO Festo cylinders can be reduced in diameter and increased in number (such as three cylinder 1.0T) or equipped with electric assistance. However, in the high-performance field, there is still a tendency towards larger cylinder diameters, such as the Porsche 4.0L horizontally opposed engine (cylinder diameter 102mm), which balances high speed and torque.

In the future, material technology advancements may further break through diameter limitations.