The characteristics:
- Weight: heavy – very heavy
- Disturbing frequency: low – medium
- Mounting: standing
Find below our tables of Damping efficiency upon disturbing frequency
How to evaluate the suitability of an isolator?
How to read the tables?
Example: the load per one vibro-isolator is 280 kg, and the operating frequency of the device is 2300 rpm. See the 5 steps to read from the table (as shown in the attached diagram) to find out if the selected vibro-isolator meets the damping conditions and is well-matched.
The motor’s speed (rpm) causes vibrations (Hz) in HVAC devices. To simplify product selection, we’ve organized tables by speed, as it’s easily obtainable from suppliers.
- Select the weight of the device in the table – greater than or equal to 280 kg
- Horizontally to the left, you can see the product number of Walraven VibraTek®
- Horizontally to the right, you can read the deflection
- Locate the column with a frequency lower than 2300 rpm
- Read the damping performance at: cross-deflection and frequency
Damping efficiency upon disturbing frequency
Damping performance description
| V[%] | Damping performance description | |||
| 99% | excellent | high requirements | medium requirements | regular requirements |
| 93% | perfect | |||
| 88% | very good | |||
| 81% | good | |||
| 67% | sufficient | |||
| 20% | mediocre | low improvement or negative impact – contact Walraven Technical Support for alternative solution | ||
| 0% | nochange | |||
| resonance | better without insulation | |||
Walraven VibraTek® MS-1
| Walraven VibraTek® MS-1 |
Damping efficiency upon disturbing frequency | ||||||||||
| Article no.: | load on vibroisolator | deflection | RPM | 500 | 800 | 1000 | 1200 | 1500 | 2000 | 2500 | |
| [N] | [~kg] | [mm] | Hz | 8,3 | 13,3 | 16,7 | 20,0 | 25,0 | 33,3 | 41,7 | |
| 2800300050 | 25 | 2,5 | 11,5 | 54,6% | 86,1% | 91,5% | 94,3% | 96,4% | 98,0% | 98,7% | |
| 50 | 5 | 23,0 | 81,5% | 93,5% | 95,9% | >97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800300150 | 100 | 10 | 15,3 | 69,4% | 89,9% | 93,8% | 95,8% | 97,3% | 98,5% | 99,1% | |
| 150 | 15 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800300250 | 200 | 20 | 18,4 | 75,8% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | |
| 250 | 25 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800300500 | 300 | 30 | 13,8 | 64,8% | 88,7% | 93,0% | 95,3% | 97,0% | 98,3% | 98,9% | |
| 400 | 40 | 18,4 | 75,8% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | ||
| 500 | 50 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800300750 | 600 | 60 | 18,4 | 75,8% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | |
| 750 | 75 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800301000 | 800 | 80 | 18,4 | 75,8% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | |
| 900 | 90 | 20,7 | 79,0% | 92,7% | 95,5% | 96,9% | 98,0% | 98,9% | 99,3% | ||
| 1000 | 100 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
Walraven VibraTek® MS-1X
| Walraven VibraTek® MS-1X |
Damping efficiency upon disturbing frequency | ||||||||||
| Article no.: | load on vibroisolator | deflection | RPM | 500 | 800 | 1000 | 1200 | 1500 | 2000 | 2500 | |
| [N] | [~kg] | [mm] | Hz | 8,3 | 13,3 | 16,7 | 20,0 | 25,0 | 33,3 | 41,7 | |
| 2800401250 | 1100 | 110 | 22,0 | 80,5% | 93,2% | 95,7% | 97,1% | 98,2% | 99,0% | 99,3% | |
| 1500 | 125 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800401500 | 1400 | 140 | 23,3 | 81,8% | 93,6% | 96,0% | 97,3% | 98,3% | 99,0% | 99,4% | |
| 1500 | 150 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800402000 | 1750 | 175 | 21,9 | 80,4% | 93,1% | 95,7% | 97,1% | 98,1% | 99,0% | 99,3% | |
| 2000 | 200 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800403000 | 2200 | 220 | 18,3 | 75,6% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | |
| 2600 | 260 | 21,7 | 80,1% | 93,1% | 95,7% | 97,0% | 98,1% | 99,0% | 99,3% | ||
| 3000 | 300 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800404000 | 3500 | 350 | 21,9 | 80,4% | 93,1% | 95,7% | 97,1% | 98,1% | 99,0% | 99,3% | |
| 4000 | 400 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800405000 | 4300 | 430 | 21,5 | 80,0% | 93,0% | 95,6% | 97,0% | 98,1% | 98,9% | 99,3% | |
| 4600 | 460 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 5000 | 500 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2800406000 | 5300 | 530 | 22,1 | 80,6% | 93,2% | 95,8% | 97,1% | 98,2% | 99,0% | 99,3% | |
| 5600 | 560 | 23,3 | 81,8% | 93,6% | 96,0% | 97,3% | 98,3% | 99,0% | 99,4% | ||
| 6000 | 600 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
Walraven VibraTek® MS-2X
| Walraven VibraTek® MS-2X | Damping efficiency upon disturbing frequency | ||||||||||
| Article no.: | load on vibroisolator | deflection | RPM | 500 | 800 | 1000 | 1200 | 1500 | 2000 | 2500 | |
| [N] | [~kg] | [mm] | Hz | 8,3 | 13,3 | 16,7 | 20,0 | 25,0 | 33,3 | 41,7 | |
| 2802003000 | 2000 | 200 | 16,7 | 72,5% | 90,8% | 94,3% | 96,1% | 97,5% | 98,6% | 99,1% | |
| 3000 | 300 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2802004000 | 3500 | 350 | 21,9 | 80,4% | 93,1% | 95,7% | 97,1% | 98,1% | 99,0% | 99,3% | |
| 4000 | 400 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2802006000 | 5000 | 500 | 20,8 | 79,2% | 92,8% | 95,5% | 96,9% | 98,0% | 98,9% | 99,3% | |
| 6000 | 600 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2802008000 | 7000 | 700 | 21,9 | 80,4% | 93,1% | 95,7% | 97,1% | 98,1% | 99,0% | 99,3% | |
| 7500 | 750 | 23,4 | 81,9% | 93,6% | 96,0% | 97,3% | 98,3% | 99,0% | 99,4% | ||
| 8000 | 800 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2802010000 | 9000 | 900 | 22,5 | 81,0% | 93,4% | 95,8% | 97,2% | 98,2% | 99,0% | 99,4% | |
| 10000 | 1000 | 25,0 | 83,2% | 94,1% | 96,3% | 97,4% | 98,4% | 99,1% | 99,4% | ||
| 2802012000 | 11000 | 1100 | 22,9 | 81,4% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | |
| 11500 | 1150 | 24,0 | 82,4% | 93,8% | 96,1% | 97,3% | 98,3% | ||||
Walraven VibraTek® MS-4
| Walraven VibraTek® MS-4 | Damping efficiency upon disturbing frequency | ||||||||||
| Article no.: | load on vibroisolator | deflection | RPM | 500 | 800 | 1000 | 1200 | 1500 | 2000 | 2500 | |
| [N] | [~kg] | [mm] | Hz | 8,3 | 13,3 | 16,7 | 20,0 | 25,0 | 33,3 | 41,7 | |
| 2800501000 | 800 | 80 | 18,4 | 75,8% | 91,7% | 94,9% | 96,5% | 97,8% | 98,8% | 99,2% | |
| 1000 | 100 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800501500 | 1250 | 125 | 19,2 | 77,0% | 92,1% | 95,1% | 96,6% | 97,9% | 98,8% | 99,2% | |
| 1500 | 150 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800502000 | 1750 | 175 | 20,1 | 78,3% | 92,5% | 95,3% | 96,8% | 98,0% | 98,9% | 99,3% | |
| 2000 | 200 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800503000 | 2250 | 225 | 17,3 | 73,7% | 91,2% | 94,5% | 96,3% | 97,6% | 98,7% | 99,2% | |
| 2750 | 275 | 21,1 | 79,5% | 92,9% | 95,6% | 97,0% | 98,1% | 98,9% | 99,3% | ||
| 3000 | 300 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800504000 | 3500 | 350 | 20,1 | 78,3% | 92,5% | 95,3% | 96,8% | 98,0% | 98,9% | 99,3% | |
| 4000 | 400 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
| 2800505000 | 4250 | 425 | 19,6 | 77,5% | 92,3% | 95,2% | 96,7% | 97,9% | 98,8% | 99,3% | |
| 4750 | 475 | 21,9 | 80,3% | 93,1% | 95,7% | 97,1% | 98,1% | 99,0% | 99,3% | ||
| 5000 | 500 | 23,0 | 81,5% | 93,5% | 95,9% | 97,2% | 98,2% | 99,0% | 99,4% | ||
