Bobbin Mount

Bobbin mounts represent one of the most versatile of all vibration isolators by virtue of their simplicity of construction and application.  A wide range of sizes coupled with alternative rubber hardness and bobbin shapes provides solutions to numerous standard applications.

These mounts, produced in a range of natural rubber grades are extensively used where maximum resilience and isolation is the key selection factor and oil or solvent resistance is not an issue.  Three standard Neoprene (polychloroprene) alternatives are available where oil resistance is required but isolation efficiency is compromised.

These mounts are used in compression, shear or a combination of compression and shear. The latter combination provides an optimum for stability and isolation efficiency. These mounts are not intended for use in tension.

Most of the bobbin mounts manufactured by AVMR are to the diablo (wasted) style providing additional flexibility due to the reduced diameter whilst providing a large bonded area for long service life. Cylindrical versions may be found under the Vibrostop heading METALFLEX

These mounts have Sherardised metal plates/studs to ensure maximum corrosion protection and studded versions are provided with zinc plated/passivated nuts and lock washers on both ends.

Dimensions for SS Version

Bobbin mount A B C D Standard Versions & Notes 1111 11 11 10 M4 All 1515 15 15 13 M5 SS, OEO 1616 16 16 13 M6 SS, MF, OEO, Hexagonal 2022 20 22 16 M6 SS,OEO 2216 22 16 16 M6 SS,OEO 2620 26 20 20 M8 SS(alt M6), OEO, MF 3225 32 25 20 M8 SS,MF,OEO 3540 35 40 25 M10 SS,MF,FF,OEO 5535 55 35 25 M10 SS,MF.FF.OEO 7535 75 35 37 M12 SS,MF,FF,OEO 8050 80 50 37 M12 SS,MF,FF,OEO

Material	Rubber Hardness Shore A	Colour code	AVMR type
Natural rubber*	35	Blue	Type 1
Natural rubber	40	Orange	Type 2
Natural Rubber	50	Green	Type 3
Natural rubber	60	Yellow	Type 4
Natural rubber	70	Red	Type 5
Neoprene #	40	Red/silver	Neo 40
Neoprene	50	Green/white	Neo 50
Neoprene	90	White/silver	Neo 90

* Polyisoprene
#Polychloroprene

Bobbin mounts are stocked in the most commonly used materials.  Items not in stock may be subject to a minimum order quantity according to the number of mould cavities for a particular bobbin. Typically this ranges between 8 (for the largest bobbins) to up to 60 for some smaller items.
 

INSTALLATION
These mounts are most effective in a shear/compression mode and are not intended for tensile loading. All male threaded items are supplied with nuts and lock washers.

TYPICAL APPLICATIONS
Fans, motors, compressors, electrical equipment commensurate with loading requirements. Automotive applications include mountings for water or oil coolers. These mounts are used for both active and passive vibration suppression and shock protection.