Catalogue Unisorb - Novibra Product Line
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How to select Novibra mountings
Hardness
To avoid too many sizes, a selection of 2 rubber hardnesses is available for most of the models. These are expressed as hardness A (40°IRH) or hardness B (60°IRH) clearly mar­ked on either the mounting's rubber body or the bottom metal plate.
Key questions
► Type of machinery.
► Total weight of machinery. ^ Number of mountings.
► Interfering frequency. ^ Installation environment.
Selection of mounting - some basics
► Type RA, RAEM or M for most machinery subject to vibration. Selection depends on desired degree of isolation, type of machi­nery, rpm, site, etc.
^ Type GK or SAW isolate vibration on heavy machinery.
► Shock-absorption should preferably be isolated by means of a "soft" mounting, e.g. typeM.
^ Machine mounting type TF (Trell Foot) can be recommended for most workshop machines, but should be avoided for com­pressors, generators or similar machinery on suspended floors.
Degree of isolation
Generally discussed as percentage (%) of isolation or degrees of isolation. The higher the figure the more effective the mounting is in the installation. For a specific machinery installa­tion the objective is to decide upon the degree of isolation. In the first place this is determined by the environment where the machinery is to be situated. The type and brand of machine is only seen as a secondary consideration.
Selection of degree of isolation - Some basics
► In a sensitive environment, the highest possible degree of isolation should be attained.
^ The higher the speed range the more a machine is subject to out of balance forces and vibration. In such cases a high degree of isolation can be achieved with type RA or RAEM.
^ For low interference frequencies, a "soft" mounting should be selected.
► "Soft" mountings provide higher degrees of isolation.
► A high degree of isolation assures a quiet environment.
Novibra AV-mountings
An effective and natural way to protect people and machinery from unne­cessary strain caused by damaging vibrations and shocks.
In most cases a small investment will limit unpleasant noise and very often lead to a prolonged life of valuable machinery.
Some good reasons to select Novibra
• covering up to 99% of all applications
• expert technical advice
• ex stock supplies
• easy to install
• low installation profile
• no maintenance
• wide selection range
• load rating options 1-60.000 kg
• isolation degree up to 98%
For more information please contact our local office or distributor and ask for more detailed documentation on the respective models.
(unisorb)
INSTALLATION TECHNOLOGIES
www.unisorb.com
BOX 1000. JACKSON. Ml 49204-1000 888-4-UNISORB • FAX 517-764-5607 ISO-9001 :2000 Certified
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