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AIRMOUNT
ISOLATORS
Load (at Design Height) at:
Style
Design
•• 40 PSIG
Number
Height
(pounds)
SHAPED SLEEVE
1M1A-0
2.5
210
1M1A-1
3.0
235
2M1A
2M2A
2.0
73
SINGLE CONVOLUTION
16
3.0
420
16ST
3.0
400
131
3.5
550
110
4.5
650
116
4.5
850
116-1
5.5
940
115
4.5
1,180
19
5.0
2,130
19-.75
5.5
1,890
113
5.0
3,220
113-1
5.5
3,820
153-2
6.0
4,564
119
**
5.0
5,490
121
**
5.0
6,450
126
**
5.0
11,030
134-1.5/138-1.5
6.0
15,870
148-1
5.5
32,860
DOUBLE CONVOLUTION
25
5.5
430
255-1.5
6.0
566
224
6.5
730
26
8.0
790
20
8.5
990
20-2
10.0
1,184
22
9.5
2,060
22-1.5
10.5
1,930
21
9.5
3,030
21-2
10.5
3,460
233-2
11.25
3,413
28
**
9.5
4,590
203
**
9.5
7,210
29
**
9.5
9,780
200
9.5
13,290
211/215
10.5
15,840
248-2
11.0
30,830
TRIPLE CONVOLUTION
352
13.5
2,319
313
13.0
3,310
333
14.7
3,282
312
**
13.0
5,100
323
**
13.0
7,380
320
**
14.0
10,340
319/321
15.0
16,220
348-3
15.0
31,480
REVERSIBLE SLEEVE
1X84D-1
8.0
310
4001
5.5
150
7002
4.5
310
7010
8.0
280
7012
8.5
360
1T12E-3
10.5
290
1T14C-1
10.0
1,210
1T14C-3
11.0
1,230
1T14C-7
13.5
1,250
1T15T-1
7.0
2,100
1T15S-6
12.0
2,040
1T15L-4
11.0
2,650
1T15M-0
7.5
2,670
1T15M-2
9.5
2,850
1T15M-4
12.5
2,760
1T15M-6
15.0
2,720
1T15M-9
18.5
2,780
1T19L-7
15.0
3,476
1T19L-11
18.0
3,411
•• Airmount isolator air pressures below 40 PSIG should be reviewed with Firestone.
† Except for 1X84D-1 and 1M1A.
Natural
Frequency
60 PSIG
80 PSIG
(@ 80 PSIG)
(pounds)
(pounds)
f
(cpm)
n
330
450
220
356
475
162
DO NOT USE 2M1A AS AN AIRMOUNT ISOLATOR
105
137
232
640
880
237
600
800
240
850
1,170
181
1,010
1,390
162
1,330
1,830
163
1,410
1,930
139
1,750
2,350
166
3,310
4,500
156
2,950
4,080
156
5,030
6,890
150
5,900
7,990
133
7,048
9,682
121
8,450
11,450
138
10,300
14,450
142
16,710
22,460
133
24,490
32,890
124
50,290
67,690
118
670
910
154
871
1,194
129
1,130
1,530
126
1,230
1,670
111
1,540
2,130
116
1,848
2,531
97
3,170
4,280
106
3,030
4,130
106
4,750
6,540
105
5,350
7,280
95
5,631
7,691
89
7,010
9,590
101
11,100
14,970
97
14,860
20,060
92
20,390
27,330
93
24,140
32,550
86
47,720
63,890
83
3,631
5,017
77
5,120
7,020
82
5,167
7,000
77
7,930
10,730
80
11,520
15,550
77
15,580
21,080
73
24,690
33,290
70
47,870
64,870
68
500
680
71
220
290
105
480
650
114
440
600
83
590
790
75
450
600
73
1,880
2,540
86
1,890
2,570
76
1,910
2,600
64
3,220
4,370
97
3,140
4,220
74
4,080
5,510
82
4,120
5,540
94
4,370
5,900
86
4,200
5,670
71
4,110
5,560
67
4,250
5,680
58
5,264
7,052
70
5,151
6,911
63
% of Isolation at
Forced Frequency
400 CPM
800 CPM
1500 CPM
%
%
%
91.8
97.8
90.0
95.5
98.6
90.8
97.5
90.3
97.4
87.0
97.0
99.2
74.4
94.6
98.5
80.2
95.7
98.8
80.2
95.7
98.8
86.3
96.9
99.1
79.1
95.5
98.8
82.1
96.0
98.9
82.0
96.0
98.9
83.6
96.4
99.0
87.7
97.2
99.2
89.9
97.7
99.3
86.5
96.9
99.1
85.5
96.7
99.1
87.5
97.1
99.2
89.3
97.5
99.3
90.5
97.8
99.4
82.5
96.1
98.9
87.6
97.2
99.2
89.0
97.5
99.3
91.6
98.0
99.4
90.7
97.8
99.4
93.7
98.5
99.5
92.4
98.2
99.5
92.4
98.2
99.5
92.6
98.3
99.5
94.1
98.6
99 6
95.0
98.8
99.7
93.2
98.4
99.5
93.7
98.5
99.6
94.4
98.7
99.6
94.2
98.6
99.6
95.1
98.8
99.7
95.5
98.9
99.7
95.9
99.0
99.7
95.6
98.9
99.7
96.1
99.1
99.7
95.8
99.0
99.7
96.1
99.1
99.7
96.5
99.2
99.8
96.8
99.2
99.8
97.0
99.3
99.8
96.8
99.2
99.8
92.7
98.3
99.5
91.2
97.9
99.4
95.5
98.9
99.7
96.3
99.1
99.7
96.5
99.2
99.8
95.1
98.8
99.7
96.2
99.1
99.7
97.4
99.4
99.8
93.7
98.5
99.6
96.5
99.1
99.8
95.6
98.9
99.7
94.1
98.6
99.6
95.2
98.8
99.7
96.8
99.2
99.8
97.1
99.3
99.8
97.8
99.5
99.8
96.8
99.2
99.8
97.5
99.4
99.8
END CLOSURES
TYPE 1 bead plate
1/4 NPT
AIR INLET
A
TYPE 2 bead plate
1/4 OR
3/4 NPT
AIR INLET
A
A
TYPE 3 bead plate
1/4 OR
3/4 NPT
AIR INLET
B
A
TYPE 4 bead ring
C
TYPE 5 rolled plate
3/4 NPT
AIR INLET
A
B
33
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