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23 21 19 17 15 13 11
MAX. HT. MIN. HT.
125
120
115
110
105
100
95
90
85
80
75
70
65
60
55
50
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5
0
9 7 5.5
120 Psig
100 Psig
80 Psig
60 Psig
40 Psig
20 Psig
Do not use Airstroke in
shaded area without
consulting Firestone
Volume
100 Psig
CONSULT FIRESTONE
BEFORE USING AS
AIRMOUNT
RECOMMENDED
AIRMOUNT
DESIGN HEIGHT
15.0 INCHES
Static Data
8413
HEIGHT IN.
348-3
HEIGHT
35.04 DIA.
40 (3/8-24) BOLTS
EACH RING
28-32 FT. LBS.
TORQUE
32.68 BOLT CIRCLE DIA.
37.4 MAX O.D.
AT 100 PSIG
NOTE: The effective length of the 1
7
/8 bolt is 1.02” in
this bead ring.
See page 12 for instructions on how to use chart.
VOLUME (WITHOUT BUMPER) CU IN. x 1000
FORCE LBS x 1000
Dynamic Characteristics at 15.0 in. Design Height
(Required for Airmount isolator design only)
Volume @ 100 PSIG = 13,501 in
3
Gage Spring
Pressure Load Rate
(PSIG) (lbs.) (lbs./in.)
40 31,480 4,761 73 1.22
60 47,870 6,586 70 1.16
80 64,870 8,614 68 1.14
100 82,540 10,592 67 1.12
Natural
Frequency
CPM HZ
Description
Assembly Order No.
Ribbed neck aluminum bead
rings (equal spacing),
1
7
/8 bolts, nuts, washers
WO1-358-9603
Rubber bellows only
WO1-358-1023
Assembly weight ..................................................... 103.9 lbs
Force to collapse to minimum height (@ 0 PSIG)..... 380 lbs.
Style
348-3
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
18.0 15,946 14,080 27,430 43,790 57,710 74,670
16.0 14,340 15,190 30,370 46,420 62,810 80,190
14.0 12,634 16,230 32,380 49,170 66,610 84,820
12.0 10,843 17,330 33,880 51,470 69,410 89,150
10.0 8,984 18,290 35,370 53,580 71,930 93,030
8.0 7,075 19,070 36,970 55,590 74,740 96,470
6.0 5,102 19,760 38,620 57,550 77,790 99,680