• WELL NUT® Advantages
Vibration-Isolating Effect
WELL NUT~ provides on excellent vibration-isolating effect to absorb vibration and noise.
Vibration-isolating Characteristics (Forced Vibration Frequency vs. Supporting Load)
- To obtain an optimal vibration-isolating effect, select a WELL NUT that
meets the supporting load vs. vibration frequency condition of your
particular application.
- The graph illustrates the vibration-isolating characteristics
of WELL NUT specifically, the relationship of vibration frequency and
supporting load when the vibration transmission rate is 33,3%,
(Note 1) This graph represents average characteristics, The specific
characteristics will vary depending an the size, tightening torque, material
thickness, etc.
- (Note 2) Determine an appropriate supporting load within the allowable
range specified in the catalog.
 Sealing Effect
WELL NUTS~ are able to seal liquids and gases. They are particularly suited for use in a low-pressure environment.
Insulating Effect
The WELL NUT exhibits excellent electrical insulation properties.
WELL NUT is available in a chloroprene-rubber or EPDM, Chloroprene
rubber offers stable strength and exhibits average levels of all beneficial
properties. EPDM is particularly suitable in an outdoor environment where
the nut must provide weather resistance, ozone resistance, etc.
[How to read the graph]
(Example) If a 12-kg motor is installed using
four M3 WELL NUT” fasteners, the supporting
load is 3 kg, Therefore, excellent
vibration-isolating effect can be achieved at a
vibration frequency of 125 Hz or above,
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RoHS compliant 
