53
65
60
55
50
45
40
35
30
25
20
15
10
5
8
7
6
5
4
3
2
MAX. HT.
MIN. HT.
65
60
55
50
45
40
35
30
25
20
15
10
5
Volume
100 Psig
Do not use Airstroke in
shaded area without
consulting Firestone
20 Psig
40 Psig
60 Psig
80 Psig
100 Psig
120 Psig
RECOMMENDED
AIRMOUNT
DESIGN HEIGHT
6.0 INCHES
Static Data
3575
HEIGHT IN.
HEIGHT
25.13 DIA.
32 (3/8-24) BOLTS
EACH RING
28-32 FT. LBS.
TORQUE
23.50 BOLT CIRCLE DIA.
27.9 MAX O.D.
AT 100 PSIG
See page 12 for instructions on how to use chart.
V
OLUME (WITHOUT B
UMPER) CU IN. x 100
FORCE LBS x 1000
Dynamic Characteristics at 6.0 in. Design Height
(Required for Airmount isolator design only)
Volume @ 100 PSIG = 3,014 in
3
Gage
Spring
Pressure
Load
Rate
(PSIG)
(lbs.)
(lbs./ in.)
40
15,870
8,190
135
2.25
60
24,490
11,439
128
2.14
80
32,890
14,427
124
2.07
100
41,620
17,301
121
2.02
Natural
Frequency
CPM
HZ
NOTE: A bead ring part is shown. This part is also avail-
able with rolled plates. See page 11 for explanation.
138-1.5
Description
Assembly Order No.
Ribbed neck aluminum
bead rings (equal spacing),
1
7
/
8
bolts, nuts, washers
WO1-358-7737
Rubber bellows only
WO1-358-0147
Assembly weight ...................................................... 24.5 lbs.
Force to collapse to minimum height (@ 0 PSIG)..... 150 lbs.
Style
138-1.5
Two Ply
High
Strength
Bellows
Force Table (Use for Airstroke
®
actuator design)
Volume
Pounds Force
Assembly @ 100
Height
PSIG
@20
@40
@60
@80
@100
(in.)
(in
3
)
PSIG
PSIG
PSIG
PSIG
PSIG
9.0
3,419 5,390 11,420 18,340 25,320 32,820
8.0
3,014 7,770 15,870 24,490 32,890 41,620
7.0
2,552 9,410 18,910 28,740 38,230 47,890
6.0
2,045 10,360 20,670 31,280 41,520 51,850
5.0
1,509 10,860 21,560 32,660 43,430 54,250
