PM/31000
Single acting
Compact air bellows
Ø 80 ...325 mm
Technical Data
Medium:
Compressed air, non-lubricated
Operation:
Single acting
Operating Pressure:
8 bar maximum
Operating Temperature:
-40°C to + 70°C for PM/31000 (Standard)
-25°C to + 90°C for TPM/31000 (Butyl)
-20°C to + 115°C for EPM/31000 (Epichlore)
Nominal Diameters:
2 3/4, 4 1/2, 6, 8, 9 1/4, 12 inches
Stroke Lengths:
From 20 to 315 mm max., depending on
diameters and number of convolutions
Materials:
End plates: Plastic Ø 2 3/4, 6 inches
Aluminium Ø 4 inches
Zinc-chromated steel Ø 8, 9 1/4, 12 inches
Central ring: Plastic, aluminium or zinc-chromated steel
Rubber part: PM/31000 fabric reinforced NR-, SBR-,
BR-compound rubber
TPM/31000 fabric reinforced Butyl
EPM/31000 fabric reinforced Epichlore
Important Instructions:
The design of these Air Bellows allows an operation at an angle of 5° to 25°. The top and bottom plate can be out of alignment, depending on the height of the Air Bellow and the number of convolutions. To avoid damage mechanical stops at both end positions have to be used. To return Air Bellows to their minimum height an external return force must be used. The thrust depends directly on the height of the Air Bellow: When height increases – the thrust decreases. As the outside diameter varies in operation there must be enough clearance around the Air Bellow.
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