Type BZ

TYPE BZ

CFM Air Springs type BZ have a natural frequency between 2.1 Hz and 3.8 Hz, depending on size and operating pressure. At an operating pressure of 8 bar, a maximum load capacity of 107.6 kN per air spring can be achieved.

The type BZ air spring is primarily used as an isolation element in combination with cast iron clamping plates and small seismic masses. Due to their large stroke, these air springs are particularly suited for dynamic applications.

The air spring versions MB and DS feature inner stops in order not to go below a predefined minimal height. An integrated elastomer spring serves as an emergency isolation mechanism in case of pressure loss. Air spring and vibration isolation are protected against damages.

BZ

Offered Sizes

ModelOperating Pressure [bar]Load Capacity [kN]Vertical Frequency (dyn.) [Hz]
BZ 34
BZ 34
BZ 34
4
6
8
2.3
3.4
4.4
3.3
3.3
3.2
BZ 46
BZ 46
BZ 46
4
6
8
3.0
4.6
6.1
3.8
3.7
3.6
BZ 52
BZ 52
BZ 52
4
6
8
3.7
5.7
7.7
2.9
2.8
2.7
BZ 85
BZ 85
BZ 85
4
6
8
5.3
8.3
10.9
2.8
2.6
2.6
BZ 120 MB
BZ 120 MB
BZ 120 MB
4
6
8
7.5
11.9
15.7
2.6
2.6
2.6
BZ 210 DS
BZ 210 DS
BZ 210 DS
4
6
8
14.2
21.8
29.0
2.4
2.3
2.3
BZ 320 DS
BZ 320 DS
BZ 320 DS
4
6
8
20.1
31.6
42.2
2.5
2.4
2.3
BZ 570 DS
BZ 570 DS
BZ 570 DS
4
6
8
38.8
58.7
78.1
2.2
2.2
2.1
BZ 840 DS
BZ 840 DS
BZ 840 DS
4
6
8
52.1
79.0
107.6
2.2
2.2
2.2