Larosi offers a complete range of Marsh Mellow springs, the ultimate solution for those seeking reliability and superior performance in vibration isolation.
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Marsh Mellow Rubber Spring Technology
Firestone Airide Marsh Mellow rubber springs completely change the game compared to traditional steel springs. They are not metal: at the core there is solid rubber reinforced with fabric. This means heavy loads without annoying vibrations.
No mechanical parts inside, zero friction and noise. They operate smoothly and silently in any situation.
The real advantage? Total resistance to corrosion. In wet mines, agricultural fields or transport applications exposed to chemicals, steel deteriorates quickly. Rubber does not: fewer failures, less downtime and lower maintenance costs.
They also prevent sudden failures caused by metal fatigue. Ideal for mining, agriculture and transportation — 100% reliable.
Marsh Mellow or Hollow Rubber Springs? Choose the Ideal Solution
Marsh Mellow springs are often confused with Hollow Rubber Springs (available in our catalog) due to their similar look and rubber outer structure. However, the manufacturing process is entirely different: Marsh Mellow springs feature a solid rubber core reinforced with fabric layers, whereas Hollow Rubber Springs utilize an internal air chamber design with an elastic casing. This distinction changes everything—from the inside out.
Key Performance Differences:
- Marsh Mellow Springs: These excel under variable loads and provide precision shock absorption, handling extreme weights without deforming.
- Hollow Rubber Springs: These are better suited for light isolation and torsion applications, offering different characteristics regarding durability and flexibility.
Not sure which one to choose for your plant or dealership? The Larosi technical team provides a custom, fast, and precise comparison to ensure you get the right fit for your needs.
Technical Advantages: Why Choose Marsh Mellow Springs?
Marsh Mellow springs are not simple rubber components, but engineered systems designed to overcome the limits of traditional solutions. Here are the main reasons why professionals choose Marsh Mellow:
- Extreme Durability and Environmental Resistance: Thanks to the special rubber compound, these springs provide excellent resistance to weather conditions, ozone and chemical corrosion.
- Zero Maintenance: Unlike pneumatic or mechanical systems, Marsh Mellow springs have no internal moving parts. This means no lubrication, no seals that wear out and no need for constant inspections.
- Silent Operation and Working Comfort: The internal structure eliminates metal-to-metal friction, drastically reducing noise pollution and protecting machinery structures.
- Explosion-Safe Design: With no friction between metal components, there is no risk of sparks, making them ideal for environments with explosion risks or flammable dust.
- Multi-Industry Versatility: A compact design suitable for applications in mining, industrial and agricultural sectors.
Marsh Mellow Rubber Springs Selection Guide
| Maximum allowable stroke 800-1200CPM/Hz | UNLOADED DIMENSION | MINIMUM LOAD | MAXIMUM LOAD | |||||||||||||||||
| Mod | In | mm | Outer diameter (inches/mm) | Inner diameter (inches/mm) | Free height(in/mm) | Minimum load (lbs/kN) | Compressedheight(in/mm) | Natural frequency(CPM/Hz) | Minimum load(lbs/kN) | Compressedheight(in/mm) | Natural frequency(CPM/Hz) | |||||||||
| W22-358-0216 | 0.13 | 3 | 1.625 | 41 | 0.625 | 16 | 1.75 | 44 | 145 | 0.64 | 1.5 | 38 | 414 | 6.9 | 315 | 1.4 | 1.27 | 32 | 304 | 5.1 |
| W22-358-0222 | 0.26 | 7 | 1.625 | 41 | 0.625 | 16 | 3.5 | 89 | 140 | 0.62 | 2.98 | 76 | 279 | 4.7 | 320 | 1.4 | 2.54 | 65 | 253 | 4.2 |
| W22-358-0031 | 0.38 | 10 | 3.25 | 83 | 1.25 | 32 | 5 | 127 | 400 | 1.78 | 4.25 | 108 | 251 | 4.2 | 900 | 4 | 3.63 | 92 | 186 | 3.1 |
| W22-358-0183 | 0.3 | 8 | 3 | 76 | 1 | 25 | 4 | 102 | 410 | 1.82 | 3.25 | 83 | 197 | 3.3 | 680 | 3 | 2.9 | 74 | 242 | 4 |
| W22-358-0047 | 0.3 | 8 | 3 | 76 | 1 | 25 | 4 | 102 | 420 | 1.87 | 3.4 | 86 | 174 | 2.9 | 910 | 4 | 2.9 | 74 | 161 | 2.7 |
| W22-358-0030 | 0.23 | 6 | 3 | 76 | 1 | 25 | 3 | 76 | 475 | 2.11 | 2.55 | 65 | 293 | 4.9 | 925 | 4.1 | 2.18 | 55 | 216 | 3.6 |
| W22-358-0180 | 0.45 | 11 | 4 | 102 | 2 | 51 | 6 | 152 | 530 | 2.36 | 5.1 | 130 | 218 | 3.6 | 1100 | 4.9 | 4.35 | 110 | 162 | 2.7 |
| W22-358-0123 | 0.45 | 11 | 3.5 | 89 | 1 | 25 | 6 | 152 | 570 | 2.53 | 5.1 | 130 | 223 | 3.7 | 1225 | 5.4 | 4.35 | 110 | 165 | 2.8 |
| W22-358-0178 | 0.45 | 11 | 4.5 | 114 | 2 | 51 | 6 | 152 | 720 | 3.2 | 5.1 | 130 | 235 | 3.9 | 1690 | 7.5 | 4.35 | 110 | 173 | 2.9 |
| W22-358-0091 | 0.53 | 13 | 4.5 | 114 | 1 | 25 | 7 | 178 | 1120 | 4.98 | 5.95 | 151 | 213 | 3.6 | 2550 | 11.3 | 5.08 | 129 | 158 | 2.6 |
| W22-358-0064 | 0.53 | 13 | 5 | 127 | 1 | 25 | 7 | 178 | 1400 | 6.22 | 5.95 | 151 | 210 | 3.5 | 2860 | 12.7 | 5.08 | 129 | 165 | 2.8 |
| W22-358-0172 | 0.45 | 11 | 6 | 152 | 3 | 76 | 6 | 152 | 1400 | 6.22 | 5.1 | 130 | 208 | 3.5 | 3080 | 13.7 | 4.35 | 110 | 192 | 3.2 |
| W22-358-0186 | 0.6 | 15 | 6.5 | 165 | 3 | 76 | 8 | 203 | 1530 | 6.8 | 6.8 | 173 | 195 | 3.3 | 3350 | 14.9 | 5.8 | 147 | 144 | 2.4 |
| W22-358-0187 | 0.53 | 13 | 5.5 | 140 | 2 | 51 | 7 | 178 | 1540 | 6.84 | 5.95 | 151 | 182 | 3 | 3280 | 14.6 | 5.08 | 129 | 181 | 3 |
| W22-358-0200 | 0.45 | 11 | 6 | 152 | 1 | 25 | 6 | 152 | 1765 | 7.84 | 5.1 | 130 | 232 | 3.9 | 4050 | 18 | 4.35 | 110 | 171 | 2.9 |
| W22-358-0042 | 0.75 | 19 | 6 | 152 | 1 | 25 | 10 | 254 | 1980 | 8.8 | 8.5 | 216 | 175 | 2.9 | 4340 | 19.3 | 7.25 | 184 | 129 | 2.2 |
| W22-358-0190 | 0.6 | 15 | 6.5 | 165 | 2 | 51 | 8 | 203 | 1990 | 8.84 | 6.8 | 173 | 186 | 3.1 | 4400 | 19.6 | 5.8 | 147 | 160 | 2.7 |
| W22-356-0122 | 0.6 | 15 | 6 | 152 | 1 | 25 | 8 | 203 | 2180 | 9.69 | 6.8 | 173 | 192 | 3.2 | 4670 | 20.8 | 5.8 | 147 | 142 | 2.4 |
| W22-358-0179 | 0.6 | 15 | 7.5 | 191 | 3.5 | 89 | 8 | 203 | 2300 | 10.22 | 6.8 | 173 | 180 | 3 | 5150 | 22.9 | 5.8 | 147 | 164 | 2.7 |
| W22-358-0176 | 0.75 | 19 | 7.5 | 191 | 3.5 | 89 | 10 | 254 | 2300 | 10.22 | 8.5 | 216 | 175 | 2.9 | 5300 | 23.6 | 7.25 | 184 | 144 | 2.4 |
| W22-358-0228 | 0.9 | 23 | 8 | 203 | 3.5 | 89 | 12 | 305 | 2700 | 12 | 10.2 | 259 | 158 | 2.6 | 5870 | 26.1 | 8.7 | 221 | 116 | 1.9 |
| W22-358-0232 | 0.6 | 15 | 8 | 203 | 2 | 51 | 8 | 203 | 3300 | 14.67 | 6.8 | 173 | 188 | 3.1 | 7900 | 35.1 | 5.8 | 147 | 178 | 3 |
| W22-358-0230 | 0.6 | 15 | 9 | 229 | 2 | 51 | 8 | 203 | 5200 | 23.11 | 6.8 | 173 | 182 | 3 | 11400 | 50.7 | 5.8 | 147 | 151 | 2.5 |
| W22-358-0108 | 1.05 | 27 | 10 | 254 | 2 | 51 | 14 | 356 | 5500 | 24.44 | 11.9 | 302 | 148 | 2.5 | 12250 | 54.4 | 10.15 | 258 | 110 | 1.8 |
| W22-358-0254 | 0.6 | 15 | 10 | 254 | 2 | 51 | 8 | 203 | 6600 | 29.33 | 6.8 | 173 | 199 | 3.3 | 15000 | 66.7 | 5.8 | 147 | 159 | 2.7 |
| W22-358-0143 | 0.45 | 11 | 11 | 279 | 2 | 51 | 6 | 152 | 8200 | 36.44 | 5.1 | 130 | 220 | 3.7 | 20000 | 88.9 | 4.35 | 110 | 204 | 3.4 |
| W22-358-0243 | 0.6 | 15 | 11 | 279 | 2 | 51 | 8 | 203 | 8300 | 36.89 | 6.8 | 173 | 195 | 3.3 | 18000 | 80 | 5.8 | 147 | 144 | 2.4 |
*800-1200 CPM/Hz
How They Work Against Vibrations
Marsh mellow rubber springs isolate more than 97% of vibrations. The soft core absorbs shocks and oscillations without transmitting them to machines or structures.
High Load Resistance
They withstand compressive loads up to 100,000 pounds, with heights ranging from 2 to 12 inches. Perfect for compression, shear or torsion, even combined in stacks.
Common Applications: Where Marsh Mellow Springs Are Used
- Vibrating Screens: Used as primary isolators to ensure smooth screen movement and protect the supporting frame from excessive vibration.
- Conveyors and Transport Systems: Ideal for supporting vibrating troughs and shaking conveyors.
- Off-Highway Vehicle Suspensions: Used in agricultural machinery and earth-moving equipment to absorb shocks on rough terrain.
- Mining Equipment: Perfect for heavy machinery operating in dust, debris and extreme dynamic loads.
- Industrial Anti-Vibration Mounts: Used to isolate presses, compressors and generators.
Thanks to our large warehouse, we guarantee a carefully selected range of models ready for shipment and fast logistics across all Europe and Rest of the World. Choosing Larosi means relying on industry experts ready to guide you in selecting the perfect replacement part while ensuring the best quality-price ratio and dedicated after-sales support.
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