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 Elastomeric Elements – Building Blocks for Design
Lovejoy ROSTA offers a complete line of multi-purpose elastomeric elements that can solve most types of tensioning, suspension, and vibration absorbtion problems in all fields of mechanical engineering.
 All Lovejoy ROSTA products are based upon the ROSTA Principle: four elastomeric elements are inside the base of each and every tensioner, suspension unit, oscillating unit, and anti-vibration damper. The elements transmit the oscillations of a system, while simultaneously dampening vibration, shock,
and noise.
 Features of this product line include:
No lubrication required Maintenance-free operation Self-adjusting convenience Protective finish for long life Customized solutions to tensioning, dampening, supporting or mounting problems
Click below for the appropriate ROSTA Catalog.
 ROSTA Catalog
Anti-Vibration Mounts
Motorbases
Rubber Suspension Mounts
Oscillating Mounts
Tensioners
A Superior Alternative
Replace your obsolete springs, dampers, and bearings with ROSTA elements and combine the best features of those alternatives without the aggravation of maintenance or the expense of periodic replacement.
For example, using ROSTA elements instead of springs provides considerable lateral stability not often found in coil-spring designs. They can support tensile, compressive, and shear stresses and offer torsion angles up to + 30°. They also effectively prevent the transference of vibration and noise through the floor or base to other equipment.
Similarly, ROSTA dampers are more compact, simpler in design and can be used in more applications than conventional shock absorbers. The dampening effect, caused by molecular friction (hysteresis), lies within the ideal range of 15° to 25°. The rubber suspension ensures a long life for belts, idlers and other drive components.
In addition, ROSTA elements are better than ball, needle and plain bearings when used for oscillation motion, especially under high-frequency revolutions. Conventional bearings will have a drastically reduced wear life due to inadequate lubrication on these applications - but ROSTA elements require no lubrication.
Self-Adjusting and Maintenance-Free Operation
The Lovejoy ROSTA rubber spring-type design permits automatic selfadjustment of belts and chains to compensate for normal stretching. Taut chains and belts mean longer life with less maintenance. Self-adjustment also protects against momentary shocks and sudden impacts.
All Lovejoy ROSTA elements are also maintenance-free. They are unaffected by mud, dirt, water, and sunlight; and they can withstand temperatures from -40° to +180°F (-40° to +80°C). Since ROSTA elements have no metal-to-metal contact, there are no parts to wear out and no lubrication is needed. Count on less maintenance, and then count the savings!
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