Vibration Control

Washers for Mounts


Snubbing washers provide an interlocking system of metal parts which act to prevent damage from overload or excessive shock impact. Load Deflection Characteristics Each mounting has definite load rating. Correct loading is essential to allow movement in free shear between snubbing washers Rating deflection is a predetermined value in mounting design. When any mounting is supporting its rated load, the resulting deflection positions mountings mudway in zone of free shear action. Snubbing curve illustrates rapid increase in spring rate of mounting which occurs when upper snubbing washer contacts rubber unnder overload or shock. Increase in spring rate limits deflection and arrests excessive movements. Rebound curve illustrates increase in spring rate when the bottom snubbing washer contacts rubber uunder overload or shock. THis increase in spring rate restricts movement in the same manner but in the opposite direction as described for the snubbing curve above. Free deflection curve defines action which takes place when a shock l;oad is imposed on a non-snubbing mounting. Deflections under shock in both directions would be very large and in proportion to load imposed.

Snubbing washers provide an interlocking system of metal parts which act to prevent damage from overload or excessive shock impact.

Load Deflection Characteristics

Each mounting has definite load rating. Correct loading is essential to allow movement in free shear between snubbing washers
Rating deflection is a predetermined value in mounting design. When any mounting is supporting its rated load, the resulting deflection positions mountings mudway in zone of free shear action.
Snubbing curve illustrates rapid increase in spring rate of mounting which occurs when upper snubbing washer contacts rubber unnder overload or shock. Increase in spring rate limits deflection and arrests excessive movements.
Rebound curve illustrates increase in spring rate when the bottom snubbing washer contacts rubber uunder overload or shock. THis increase in spring rate restricts movement in the same manner but in the opposite direction as described for the snubbing curve above.
Free deflection curve defines action which takes place when a shock l;oad is imposed on a non-snubbing mounting. Deflections under shock in both directions would be very large and in proportion to load imposed.

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