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Group: rubber-metal
¬ RM suspension mounts
¬ RM bushes
¬ RM cones
¬ RM bearing blocks
¬ RM machine mounts
¬ RM buffers
¬ RM rings
¬ RM bars
¬ Rubber buffers
¬ Cellular PUR with
central fixing
¬ Cellular PUR with
base plate
¬ Cell. PU energy
absorp. capacity
¬ Rubber-(metal)
Rubber buffers
¬ Rubber-(metal)
with base plate
¬ Rubber-(metal) with
reinf. base plate
¬ Rubber-(metal) with
threaded stud
Group: polyurethane
Group: mouldings
Group: stampings
Group: transformer
oil resist. rubber parts
Product range A-Z
Application examples
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STALASTIC: Buffers
Stop buffers made of cellular polyurethane elastomers are available in the standard product range. They are used in general machine building and in crane building. The buffers are available with a central fixing or a square base plate. The portfolio of connections for both versions can be obtained from the tables on the following pages.
Most of the stop buffers from the standard product range are stocked in densities ranging from 0.5 to 0.55g/cm³. Other types can be used depending on the actual intended usage.
Each buffer diameter is available in three heights, given as a ratio of diameter to height:
- 1:0.5 (buffer size 1, cylindrical version)
- 1:1.5 (buffer size 2, conical version)
- 1:1.5 (buffer size 3, cylindrical version)
The end faces on size 2 buffers up to 200mm diameter are generally smooth. The buffer sizes 1 and 3 have studded end faces. For diameters of 250mm and above the end faces are generally studded in order to avoid one buffer sliding off another when two buffers are used facing each other.
The energy absorption capacity and the end force of each buffer size can be obtained from the table on page entitled: Cell. PU energy absorption capacity.
When using the stop buffers as crane buffers, to reduce the end forces still further, for each buffer on the crane an opposing buffer can be positioned on the end stop. To prevent the buffers from bending out of line, this arrangement is only recommended with the following combinations:
- For buffer size 1, the opposing buffer may be size 1,2 or 3.
- For buffer size 2, the opposing buffer may be size 1 or 2.
- For buffer size 3, the opposing buffer may be size 1.
Cellular polyurethane is resistant to aliphatic hydrocarbons such as oils and greases and also to ozone, UV radiation and ageing.
The material can be used in the temperature range from -20 to +80°C.
Brief peak temperatures of up to approx. 100°C do not cause any damage.
At -20°C the material will start to harden, but this does not have any detrimental affects on the consistency of the material.
The material does not become brittle, so there is no danger of it breaking.
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