GN 342.2 Vibration Damping Leveling Feet Steel, Threaded Stud Type

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Product description

Information

The load capacity of GN 342.2 leveling feet specified in the table is a recommendation of the permanent static load up to which the damping pad should be used.

This static load corresponds to a surface pressure of 0.4 N/mm2, at which the material achieves its optimal dynamic damping ability. This also takes into account that there is an additional load of up to a pressure of 0.6 N/mm2 in the event of a dynamic load.

These leveling feet cannot be disassembled.

Specification

Base / threaded stud
Steel
  • Property class 5.8
  • Zinc plated, blue passivated finish

Vibration damping pad
Elastomer (PUR)
  • Sylomer SR 450-12
  • Non-skid, glued
  • Gray
  • Oil resistant
  • Operating range from
    -22 °F to +158 °F (-30 °C to +70 °C)

Hexagon nut ISO 4032
Steel, zinc plated, blue passivated finish


RoHS compliant

Technical drawing

3D
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GN 342.2 Steel Vibration Damping Leveling Feet, Threaded Stud Type sketch

Part Options / Table

Type

SVWith damping pad
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Metric

Dimensions in: Inch | Metric
d1d2
Thread
l1d3l2l3l4
Compression
in N/mm²
0



0.4



0.6
A/FDamping pad area in mm²Load  at compression
of 0.4 N/mm²
(See information)
1.26M 101.973.151.181.140.435.53.82.70.5970762.95 lbf (280 N)
1.57M 122.483.941.501.180.3764.33.30.671134101 lbf (450 N)
1.97M 122.483.941.891.200.356.54.93.90.671809162 lbf (720 N)
2.36M 163.154.922.281.480.3975.54.40.942641236 lbf (1050 N)

Build & Price

3D Product Configurator
Base diameter d1
Thread d2
Stud length l1
Type

Vibration absorption - Performance graph

Sketch GN 342.1

When using levelling feet GN 342.2 the following differentiation in vibration absorption is made:

Active vibrations:
Vibrations transmitted to surroundings or associated equipment from working machinery for example.

Passive vibrations:
Vibrations transmitted to equipment or parts from vibrating surroundings or bases.

The efficiency of vibration absorption is dependent upon the interference frequency of the vibration to be absorbed as well as on the resonant frequency of the dampening element itself.

A vibration absorbing effect is only achieved when the interference frequency is greater than √2-times the resonant frequency of the dampening element. The greater the difference [∆] between the two, the better the dampening effect.

The resonant frequency of the dampening pad is dependant upon type (composition) of the material cross section and the static load.

The graphs on the left show all the required data of the standard material (SR 450-12) of the dampening element. Dampening elements with other absorption properties are available on request.

Example

Sketch GN 342.1 example

Assume a load per levelling foot: 400 N

Compression levelling foot d1 = 32

400 N / 707 mm² = 0,57 N/mm²

Compression levelling foot d1 = 40

400 N / 1134 mm² = 0,34 N/mm²

Therefore levelling feet with d1=40, that exert a pressure of 0,4 N/mm² should be preferred.

The above graph shows: Resonant frequency with compression 0,34 N/mm²:17,5 Hz

The lower graph shows: Degree of isolation at 66 Hz interference frequency (P1): 92 %
Degree of isolation at 98 Hz interference frequency (P2): 97 %

At approximately 200 Hz interference frequency the degree of isolation is 100%.

Selected Part

Total US Dollars (net)
$15.25
In stock: 3
In Stock
Please note our quantity discounts (US Dollars).
MinMaxPrice
149$15.25
5099$13.98
100249$12.71
≥ 250$11.43
Prop 65: Not compliant
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.235 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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