How to choose suitable vibration isolators for pumps?

The characteristics:

Weight: light – heavy
Disturbing frequency: low – medium
Mounting: standing

Find below our tables of Damping efficiency upon disturbing frequency

vibration isolators for pumps

Walraven VibraTek® selection matrix:

How to evaluate the suitability of an isolator?

walraven vibratek how to redt the tables

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	high requirements
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%
2800300050	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%
2800300150	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%
2800300250	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%
2800300750	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%
2800401250	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%
2800401500	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%
2800402000	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%
2800404000	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-1X-CBL

Walraven VibraTek® MS-1X-CBL				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
2801901000	800	80	20,0		78,1%	92,5%	95,3%	96,8%	98,0%	98,9%	99,3%
2801901000	1000	100	25,0		83,2%	94,1%	96,3%	97,4%	98,4%	99,1%	99,4%
2801901250	1100	110	22,0		80,5%	93,2%	95,7%	97,1%	98,2%	99,0%	99,3%
2801901250	1250	125	25,0		83,2%	94,1%	96,3%	97,4%	98,4%	99,1%	99,4%
2801901500	1400	140	23,3		81,8%	93,6%	96,0%	97,3%	98,3%	99,0%	99,4%
2801901500	1500	150	25,0		83,2%	94,1%	96,3%	97,4%	98,4%	99,1%	99,4%
2801902000	1750	175	21,9		80,4%	93,1%	95,7%	97,1%	98,1%	99,0%	99,3%
2801902000	2000	200	25,0		83,2%	94,1%	96,3%	97,4%	98,4%	99,1%	99,4%
2801903000	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%
2801904000	3500	350	21,9		80,4%	93,1%	95,7%	97,1%	98,1%	99,0%	99,3%
2801904000	4000	400	25,0		83,2%	94,1%	96,3%	97,4%	98,4%	99,1%	99,4%
2801905000	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%
2801906000	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® MR-B

Walraven VibraTek® MR-B				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
2801800240	200	20	2,9		633,0%	7,4%	55,5%	72,8%	84,2%	91,7%	94,8%
2801800240	240	24	3,5		4077,4%	33,1%	65,5%	78,3%	87,1%	93,1%	95,7%
2801800750	450	45	2,4		401,6%	-40,6%	40,3%	64,9%	80,1%	89,7%	93,6%
2801800750	750	75	4,0		-776,2%	46,0%	71,1%	81,5%	88,9%	94,1%	96,3%
2801801500	1000	100	3,7		-4599,3%	38,1%	67,6%	79,5%	87,8%	93,5%	95,9%
2801801500	1500	150	5,5		-88,0%	65,8%	80,5%	87,2%	92,2%	95,7%	97,3%

Walraven VibraTek® MR-L

Walraven VibraTek® MR-L				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
2800101000	500	50	2,0		326%	-135%	19%	55%	75%	87%	92%
	600	60	2,4		402%	-41%	40%	65%	80%	90%	94%
	800	80	3,2		1020%	22%	61%	76%	86%	92%	95%
	1000	100	4,0		-776%	46%	71%	82%	89%	94%	96%
2800103000	1250	125	1,7		287%	-431%	-17%	40%	69%	84%	91%
	1500	150	2,0		326%	-135%	19%	55%	75%	87%	92%
	1750	175	2,3		386%	-51%	37%	64%	79%	89%	93%
	3000	300	4,0		-776%	46%	71%	82%	89%	94%	96%
2800105000	3250	325	2,6		463%	-17%	47%	68%	82%	91%	94%
	3500	350	2,8		554%	0%	53%	71%	83%	91%	95%
	3750	375	3,0		708%	12%	57%	74%	85%	92%	95%
	5000	500	4,0		-776%	46%	71%	82%	89%	94%	96%
2800108000	5500	550	2,8		527%	-4%	52%	71%	83%	91%	94%
	6000	600	3,0		708%	12%	57%	74%	85%	92%	95%
	7000	700	3,5		4077%	33%	66%	78%	87%	93%	96%
	8000	800	4,0		-776%	46%	71%	82%	89%	94%	96%