8 bar
Bellows are entirely dismountable. Bellows are single acting air actuators and can be used as actuator or isolator. Indicative value of force to
reach the minimum height: 7 daN. When tracking air springs, special care must be taken to ensure the air springs are guided and fixed. For
other kinds of rubber compounds, contact our technical sales department.
S
p
ecifications data
Conditions of use
Static diameter
Maximum diameter
Minimum space envelope
Static height
Minimum height
Recommended maximum height
Maximum height
Total stroke
Effective area
Stiffness at 4 bar
Natural frequency at 4 bar
546 mm
580 mm
630 mm
200 mm
90 mm
350 mm
168 daN/mm
1930 cm²
1.26 Hz
300 mm
390 mm
Maximum pressure
Burst pressure
Maximum angular capability
Maximum misalignment
20 bar
20 mm
PB2124 21½" x 2 aluminium
PB2124/B 21½" x 2 chlorobutyl aluminium
PB2124/E 21½" x 2 epichlore aluminium
For information only. For complete range, contact our technical
sales department.
Precaution in use
Tem
p
erature
Standard -40°C (-50°C static) +70°C (+90°C static)
Chlorobutyl -25°C (-35°C static) +90°C (+100°C
static)
Epichlore -20°C (-30°C static) +115°C (+120°C
static)
References table
General information
Weight of the bellows 20.6 kg
Air springs must not be pressurised unless they are restricted by
an outside frame or by a suitable load. Respect the minimum and
maximum height specifications (the high position of your
application must be lower than the air bellows maximum height
and the low position of your application must be higher than the
direct use of bump stops or external stops. Do not combine an
angular motion and a misalignment. Avoid using below
atmos
p
heric
p
ressure.
21½" x 2
PNEUSPRING
Distributor:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: airsprings@interflex.co.uk
Height
2 bar 4 bar 6 bar 8 bar
90 4 889 9 333 14 222 19397
150 4 667 8 889 13 111 17555
200 4 222 7 778 11 778 15840
250 3 444 6 667 10 000 13572
300 2 667 5 111 8 000 10857
390 1 111 2 222 3 778 5396
Characteristics in static condition
(
daN
)
D
y
namic characteristics at H = 300mm*
* Recommended height for better isolation
Height in mm
Graphic
Specifications
Charateristics
Volume (dm ³ )
Stiffness (daN/cm)
Natural frequency (Hz)
Isolation rate at 10 Hz
Load (daN)
2 bar 4 bar 6 bar
2625 5480 8335
47,5 49,1 50,8
310 538 756
1,71 1,56 1,50
97,0% 97,5% 97,7%
Misali
g
nment
D h min
(mm)
h max
(mm)
An
g
ular capabilit
y
I h min
(mm)
h max
(mm)
Volume in cm³3 Load in da
N
PNEUSPRING
21½" x 2
Distributor:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: airsprings@interflex.co.uk
