Constant Vibration Isolation with Changing Loads
The variable spring rate allows for a nearly constant
natural frequency with changing loads. This results in
consistent vibration isolation with variable loading.
High Load Carrying Capacity
Due to the Marsh Mellow™ spring’s greater deflection
capabilities and load carrying influences of the
fabric reinforcement, it can carry a greater load
when compared to an all rubber part of the same
modulus and dimensions.
Excellent Vibration Isolation
Low natural frequencies provide excellent isolation of
forced frequencies in the range of 800-1200 cycles
per minute (13-20Hz).
Lateral Vibration Isolation
The lateral spring rate of a Marsh Mellow spring
can be less than the vertical spring rate, resulting
in a lower lateral natural frequency. Marsh Mellow
springs provide better vibration isolation in all
degrees of freedom.
Compact Overall Size
The ability to support greater loads and maintain
a cylindrical shape results in a smaller overall size
of the Marsh Mellow spring compared to an all
rubber spring with identical load capacity. This is
important when considering an application with a
small design envelope.
Corrosion Resistant for a Durable, Long Life
Due to its rubber and fabric reinforced construction,
the Marsh Mellow spring has been proven in the
damp and corrosive environments of mines and mills
where a standard coil spring will fail.
Does Not Bottom-Out
Due to the rubber construction, Marsh Mellow springs
do not bottom-out like coil springs. Bottoming-out
under overload or surge load sends a large amount of
stress to all of the machine’s components.
Eliminates Downtime and Potential Damage to Machinery
When a coil spring fails, it will often crack allowing
fragments of the coil to damage equipment. This
problem is eliminated with the rubber construction
of Marsh Mellow springs. Additionally, Marsh
Mellow springs exhibit exceptionally high overload
characteristics and usually do not fail catastrophically,
offering some support even during failure.
Increased Stability at Higher Percentages of Compression
Rubber is an incompressible fluid which will flow to
the path of least resistance. In a Marsh Mellow, as the
height compresses, the fabric reinforced rubber plies
pantograph and the diameter grows. This supports the
rubber core laterally even at 30-40% compression.
Effective Noise Reduction
Marsh Mellow springs reduce structurally transmitted
noise caused by vibration. Marsh Mellow springs
are quiet, unlike steel springs which often suffer
coil chatter and readily transmit high frequency
The Marsh Mellow spring’s high load capability
means fewer springs may be needed in an application,
resulting in less overall cost.
Marsh Mellow springs have no moving parts.
No maintenance or lubrication is required.