alca rubber vibration isolator, Germany alca model, alca price

alca rubber vibration isolators are used to eliminate or reduce the transmission of mechanical vibrations. Rubber products designed for vibration isolation, noise reduction, and mitigation of impact hazards are collectively referred to as rubber vibration isolation products. They are suitable for low-frequency vibration isolation and buffering, and can serve as vibration isolators for vehicle-mounted and marine equipment. The product range includes rubber vibration isolators, rubber buffers (blocks, pads), rubber connectors, air springs, and rubber fender guards. These are pure rubber products or rubber products reinforced with fabric or metal skeletons, generally manufactured by compression molding. They are widely used in industries such as building construction, mechanical equipment, vehicles, ships, and instrumentation.

alca rubber vibration isolator selection

Selection instructions for flexible rubber joints: 1. The standard applicable temperature range for rubber joints is -200 to 70°C. The instantaneous temperature can reach 115°C, and the operating temperature is 70 to 115°C. 2. For flanged rubber joints operating under high pressure and high temperature conditions (nominal diameter above 200, temperature above 70°C, working pressure above 1.5Mpa), flanged rubber joints equipped with limit devices can be selected. 3. For flanged rubber joints, during installation, the bolts connecting the flanges must pass from the inside of the flange outwards to both ends. Use flat washers or spring washers, and tighten the bolts diagonally and gradually. For rubber joints with union connections, do not swap the union connectors at the left and right ends during installation to avoid product leakage or damage.

alca rubber vibration isolator advantages

It is a flexible component that effectively compensates for axial deformation. For example, expansion joints welded to the shell of fixed tube-sheet heat exchangers have high axial flexibility and deform easily. They can compensate for the thermal expansion difference between tubes and the shell caused by different wall temperatures, reduce their axial loads, thereby minimizing differential thermal stress in the tubes, tube sheets, and shell, and avoiding strength failure, instability failure, and tube pull-out failure. There are many types of expansion joints; common structures include bellows type, ring plate welded type, and clamped shell type. Among these, bellows expansion joints are the most widely used, while ring plate welded expansion joints are only suitable for atmospheric or low-pressure applications.

alca rubber vibration isolator applications

Expansion joints are also commonly referred to as compensators or expansion loops. They consist of bellows (an elastic element) that form the main working body, along with accessories such as end pipes, supports, flanges, and guide tubes. An expansion joint is a flexible structure installed on vessel shells or pipelines to compensate for additional stresses caused by temperature differences and mechanical vibration. It utilizes the effective axial deformation of its main working body, the bellows, to absorb dimensional changes in pipelines, conduits, vessels, etc., caused by thermal expansion and contraction, or to compensate for axial, lateral, and angular displacements of pipelines, conduits, vessels, etc. It can also be used for noise reduction and vibration damping. In heating systems, to prevent pipeline deformation or damage due to thermal elongation or temperature stress when the heating pipeline heats up, compensators need to be installed on the pipeline to compensate for the thermal elongation of the pipeline, thereby reducing the stress on the pipe wall and the forces acting on valve components or support structures. As an elastic compensation element capable of free extension and compression, expansion joints offer advantages such as reliable operation, good performance, and compact structure, and have been widely used in chemical, metallurgical, nuclear energy, and other sectors. There are various forms of expansion joints used on vessels. In terms of bellows shape, U-shaped expansion joints are the most widely used, followed by Ω-shaped and C-shaped types. For expansion joints used on pipelines, in terms of structural compensation, they are divided into universal type, pressure-balanced type, hinged type, and universal joint type.

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