Guangzhou Guomat Air Spring Co., Ltd.
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The air spring shock absorber AIRSUSTECH 8X2 refer to SP 253 Dunlop can only push the bellows towards the workpiece, otherwise it must be equipped with a stroke limiter at the end of the stroke, otherwise the bellows will be overloaded
• In order to press the air spring shock absorber AIRSUSTECH 8X2 refer to SP 253 Dunlop to the minimum height, a restoring force is required. Usually, this is achieved by applying a load
• The entire bearing surface of the upper and lower plates of the air spring shock absorber AIRSUSTECH 8X2 refer to SP 253 Dunlop must be used to absorb the force
• Before disassembling the air spring shock absorber AIRSUSTECH 8X2 refer to SP 253 Dunlop , the internal air must be released to prevent accidents and personal injury.
• During operation, the rubber air spring shock absorber AIRSUSTECH 8X2 refer to SP 253 Dunlop shall not be in contact with other parts
Size of 8X2 Rubber Air Spring DUNLOP SP 253:
Bell-shaped rubber bellows rubber bellows
Maximum diameter: 215 mm
Natural diameter rubber bellows length: 203 mm
Working stroke: minimum 72 mm to maximum 220 mm
Maximum height: 220 mm
Minimum height: 72 mm
Stroke height: 148mm
| Type | Order No. |
| Rubber bellows only | 66501 |
| with dismountable plates, G1/2 air inlet | 66505 |
Min. pressure 0 bar
Return force to min height ≤ 300 N
Overall weight 1,16 KG
| Vibration isolation - dynamic characteristic values Design height H: recommended 200mm, minimum 180mm | |||||||
| Pressure p [bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V [l] |
| Force (Load) [kN] | 3.9 | 5.3 | 6.7 | 8.2 | 9.7 | 11.3 | |
| Spring rate [N/mm] | 76 | 97 | 118.5 | 140 | 161 | 181.5 | 4.1 |
| Natural frequency [Hz] | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.0 | |
| Pneumatic application - static characteristic values Force F [kN] | ||||||||
| Pressure p [bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V [l] | |
| Height H [mm] | 220 | 2.9 | 4.03 | 5.16 | 6.41 | 7.65 | 8.98 | 4.3 |
| 200 | 3.86 | 5.27 | 6.68 | 8.21 | 9.73 | 11.3 | 4.1 | |
| 150 | 5.9 | 8 | 10.1 | 12.4 | 14.7 | 16.9 | 3.2 | |
| 100 | 8.2 | 10.9 | 13.7 | 16.6 | 19.4 | 22.4 | 2 | |
Other Norgen air springs models:
| Model | Nominal Ø (inch) x convolutions | Maximum stroke (mm) | Air Port size |
| PM/31021 | 2 3/4" x 1 | 20 | G1/4 |
| PM/31022 | 2 3/4" x 2 | 45 | G1/4 |
| PM/31023 | 2 3/4" x 3 | 65 | G1/4 |
| PM/31041 | 4 1/2" x 1 | 140 | G3/8 |
| PM/31042 | 4 1/2" x 2 | 280 | G3/8 |
| PM/31061 | 6" x 1 | 155 | G1/2 |
| PM/31062 | 6" x 2 | 155 | G1/2 |
| PM/31081 | 8" x 1 | 95 | G3/4 |
| PM/31082 | 8" x 2 | 185 | G3/4 |
| PM/31091 | 9 1/4" x 1 | 105 | G3/4 |
| PM/31092 | 9 1/4" x 1 | 230 | G3/4 |
| PM/31121 | 12" x 1 | 105 | G3/4 |
| PM/31122 | 12" x 2 | 215 | G3/4 |
| PM/31123 | 12" x 3 | 315 | G3/4 |
