F-240-4 Rubber Air Spring Replace S-240-4 YOKAHAMA Bellows
Industrial Air Bag
OEM Cross reference:
GUOMAT Part No.: F-240-4
YOKOHAMA S-240-4R
YOKOHAMA S 240 4R
YOKOHAMA S-240-4
YOKOHAMA S 240 4
YOKOHAMA S240-4R
Specifications and Detailed Technical Parameters: F-500-4
| Model Size | Height H(mm) | Common Maximum Travel(mm) | Compression Max. Outside Diameter (mm) | Standard height, approximate value at 0.49MPA internal pressure | Maximum Internal Pressure (MPA) | Internal Pressure Failure(MPA) |
| Design Height | Max. Height | Min Height | Effective Area(cm2) | Volume(L) | Load(KN) | Dynamic Spring Constant(n/mm) | Natural Vibration Frequency(Hz) |
| F-240-4 | 206 | 316 | 111 | ±80 | 300 | 450 | 10.1 | 22.2 | 235 | 1.6 | 0.88 | 2.9-3.9 |
| F-240-3 | 152 | 232 | 82 | ±60 | 300 | 450 | 7.3 | 22.2 | 324 | 1.9 | 0.88 | 2.9-3.9 |
| F-240-2 | 98 | 148 | 53 | ±40 | 300 | 450 | 4.4 | 22.2 | 520 | 2.4 | 0.88 | 2.9-3.9 |
| F-240-1 | 72 | 110 | 40 | ±30 | 340 | 450 | 3.5 | 22.2 | 765 | 2.9 | 0.69 | 2.9-3.9 |
What is a Punch Air Spring
1. Basic functions
Buffering and shock absorption: When the punch press works at high
speed, it absorbs the impact force when the slider and the mold
come into contact, reducing vibration and noise.
Pressure control: By adjusting the air pressure, it provides stable
pressure output to meet the needs of different stamping processes
(such as punching, stretching, etc.).
Protect the mold: Reduce the damage to the mold caused by impact
and extend the life of the mold.
Precise control: Cooperate with the CNC system to achieve precise
adjustment of stroke and pressure to improve processing quality.
2. Structure and working principle
Structure: It is mainly composed of cylinder, piston, seal, air
pressure regulating valve, etc., and is filled with compressed air.
Working principle:
Compression stage: When the punch press slider moves downward, the
air spring is compressed, the air pressure increases, and energy is
stored.
Release stage: When the slider returns, the compressed air expands,
pushing the piston to reset, assisting the slider to return quickly
and buffering vibration.
3. Core advantages
Adjustability: The elastic force can be changed by adjusting the
air pressure to meet the needs of different materials and
processes.
Fast response: more sensitive than mechanical springs or hydraulic
systems, suitable for high-speed stamping.
Easy maintenance: no complex mechanical structure, low failure
rate, can be repaired by replacing seals.
Energy saving and environmental protection: compared with hydraulic
systems, no oil is required to avoid pollution and energy
consumption.
4. Application scenarios
Stamping industry: used for precision stamping of automotive sheet
metal, electrical housing, hardware, etc.
Continuous punching: ensure stability in high-speed punching
machines (such as progressive die stamping).
Stretch forming: provide uniform blanking force to prevent material
wrinkling.
5. Selection points
Load requirements: select the load capacity of the air spring
according to the punching force.
Stroke length: match the movement stroke of the punch slide.
Air pressure range: ensure that the air source pressure is
compatible with the rated pressure of the spring.
Installation size: needs to be compatible with the punch structure.
The Related Picture of F-240-4
