Product Information
Description
The MM anti-vibration mounts, developed to solve vibration isolation problems on Italian Navy vessels, have medium-low frequencies (6-10 Hz) and exceptional strength and reliability, due to their metal parts made from stainless steel and their elastomeric components, made from oil-resistant compounds.
Thanks to these features, use of the resilient MM range has extended over the years to include all areas in which potentially aggressive environments and secure installation are determining factors: the oil and mining industries, civil and military shipbuilding, the defence industry (at sea and on land), the railway industry and power generation.
They have also recently been used to replace regular rubber/metal anti-vibration mounts when the anchoring of the protected equipment is required to withstand the loads caused by earthquakes.
Note: Some of these products are available at a lower cost in normal steel. If required, please contact us.
Features / benefits
- load capacity range from 30 to 350 daN (see large version for higher loads)
- multi-directional operation: compression, tension and shear
- elastomer protection: high resistance to environmental agents
- highly secure fixing (separate from the rubber component)
- resistant to impact stress (tested with a 40g x 11m/s shock in accordance with MIL-STD-810)
- anti-vibration isolator with seismic restraint
- non-magnetic stainless steel
- availability of spare parts with possible replacement of the elastomeric component alone
- detachable and recyclable steel parts
Materials:
- Metals: Stainless Steel 316 (C40 steel versions of some models available on request at a lower price)
- Rubber: NBR based elastomer blend
Loads, Shock and Vibration data
The below is a guide for use in compression.
| Model | Load Range (daN) | Deflection (mm) | Natural Frequency (Hz) | Static Stiffness (daN/mm) | Dynamic Resonance (Hz) | Dynamic Stiffness (daN/mm) |
| V-MM-30 | 30 - 50 | 4 - 5 | 8 - 7 | 7.5 - 10 | 8 - 9 | 12 - 16 |
| V-MM-50 | 50 - 100 | 3.5 - 5.5 | 8.5 - 6.5 | 14 - 18 | 9 - 7 | 16 - 20 |
| V-MM-100 | 100 - 200 | 4.6 - 6.5 | 7.5 - 6 | 22 - 30 | 8 - 6 | 25 - 29 |
| V-MM-200 | 200 - 350 | 5 - 7.5 | 7 - 5.5 | 40 - 47 | 7 - 6 | 40 - 51 |
Load limits in shear are 50% of those in compression.
Dimensions
The below is a guide.
| Model | A | B | C | D | E | F (dia) | G | H (dia) | I | J |
| V-MM-30 | 40 | 33 | 5 | 72 | 92 | 18 | 18 | 8.2 | 55 | M10 x1.5 |
| V-MM-50 | 50 | 42 | 6 | 94 | 122 | 20 | 25 | 10.5 | 77 | M12 x1.75 |
| V-MM-100 | 75 | 60 | 10 | 120 | 156 | 25 | 30 | 15 | 95 | M16 x2 |
| V-MM-200 | 85 | 70 | 12 | 138 | 183 | 40 | 40 | 17 | 114 | M24 x3 |
Lead Times:
Typical lead times are 3 weeks, but this can double in summer and winter holiday seasons.
