Cellular Bumpers / Buffers
Buffers / Bumpers
Cellular buffers have a high absorption capacity with long compression lengths. This results in small end loads and favorable deceleration values. Cellular buffers have a compression body made of cellular polyurethane elastomer with high structural stability. Their outstanding characteristic is their volume compressibility, which produces a short transverse elongation under pressure. Cellular buffers are resistant to aliphatic hydrocarbons, such as oils and greases, as well as ozone, UV-radiation, and aging. Technically, you can expect generally high durability. When exposed to hydraulic oil, hot water, or water vapor over longer periods, the cellular body has limited durability. Cellular buffers are not resistant to strong acids and leaches. The operating temperature is between -20 ºC and +80 ºC. Temporary temperature peaks of +100 °C are practicable and do not harm the buffer. When exposed to -20 °C the material becomes harder, but this does not affect the consistency of the material. The mounting structure must be flat and rigid. A mounting area of at least 1.5 x the diameter of the cellular buffer is required to accommodate the diameter increase of the buffer during compression.
Application Examples
- Cranes
- Transfer cars
- Smelter and rolling mill machines
- Handling technology
- Plant construction and engineering
- Conveyor, transport and gate systems that are equipped with form-locking drives (e.g. chain or toothed rack).
Conductix-Wampfler Standard Cellular Buffer Quality
Cellular polyurethane elastomer with a volumetric weight of 0.53 g/cm³
- Highly elastic and tear-resistant
- Aging resistant
- Material is volume compressible
- Operating temperature: -20 °C to +80 °C (characteristics may change depending on ambient temperature)
FAQs
Frequently asked questions
What are the requirements for the counter-pressure surface of the end stop buffer?
The size of the counter-pressure surface must be defined by the equipment manufacturer. The size of the surface area depends on buffer diameter and guide clearances. The buffers must strike over the whole counter-pressure surface area.
Discoloring of cellular buffers
New cellular buffers are ivory or cream colored. Under the influence of light, buffers can change color to a dark brown tint. This process is material-inherent and has no effect on operational or characteristic values of the buffer.
Are there fall protections available?
We recommend using base plate buffers (018112 series) for installation heights of 3 m or higher. All series 018112 buffers have an integrated fall arresting device. Buffers with diameters up to 200 mm have base plates made of glass fiber reinforced plastic and an integrated fall arresting device. Buffers with diameters of 250 mm or higher (optionally from 200 mm) have primed steel base plates.
