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
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