Spring Isolator VT44XX-DM
Product Characteristics
Very soft isolators designed for loading in compression only.
The springs are corrosion protected with pre-treatment Delta-Seal (zinc particles) and final surface treatment Magni 565. This provides high-class anti-corrosion protection and is particularly suited for springs without causing risk of hydrogen embrittlement. The end aluminum scrolls are protected with hard anodizing. This is an electrolytic surface treatment of aluminum which provides a very hard, corrosion resistant surface.
Maximum excitation amplitude: ± 1 mm.
Mechanical strength: 2 g.
Temperature range: -90° to +300°C.
Weight (depending on suffix): 1.2 – 1.5 kg
Product Applications
Isolation of machines – fans, compressors, generating sets, engines etc. with or without seismic blocks. Protection of fragile equipment from vibrations.
Spring Isolator VT4423
Isolation of machines rotating at 600 rpm and above
Spring Isolator VT4422
Isolation of machines rotating at 800 rpm and above
Technical Specifications
spring-isolator-vt44xx-dm-technical-specifications-1.xlsx
Spring Isolator Dimensions
| Ref. | D | d | H | h |
| (mm) | (mm) | (mm) | (mm) | |
| VT4422 | 80 | M12 | 90 | 80 ± 2 |
| VT4423 | 80 | M12 | 90 | 80 ± 2 |
| VT4424 | 80 | M12 | 140 | 120 ± 5 |
Mounting Plate Dimensions
| Ref. | L | l | B | C | E | Thickness |
| (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | |
| VT4422 | 140 | 110 | 100 | 11 | 13 | 4 |
| VT4423 | 140 | 110 | 100 | 11 | 13 | 4 |
| VT4424 | 140 | 110 | 100 | 11 | 13 | 4 |
Load Ranges
| Suffix | Load range in daN (≈kg) | ||
| VT4422 | VT4423 | VT4424 | |
| -01 | 40 - 85 | 30 - 50 | 70 - 110 |
| -02 | 65 - 125 | 50 - 80 | 95 - 130 |
| -03 | 110 - 190 | 80 - 125 | 125 - 160 |
| -04 | 175 - 270 | 125 - 195 | 160 - 230 |
| -05 | 250 - 400 | 195 - 310 | 210 - 310 |
| -06 | 360 - 560 | 310 - 420 | 300 - 420 |
| -07 | - | - | 350 - 550 |
Natural Frequency
| Ref. | Natural frequency | Amplification factor |
| (Hz) | ||
| VT4422 | 6 - 8 | < 4 |
| VT4423 | 5 - 6 | < 5 |
| VT4424 | 3 - 4 | < 8 |