Imperial

Advantages of Firestone Marsh Mellow® springs

Constant Vibration Isolation with Changing Loads
High Load Carrying Capacity
Excellent Vibration Isolation
Lateral Vibration Isolation
Compact Overall Size
Corrosion Resistant for a Durable, Long Life
Does Not Bottom-Out
Effective Noise Reduction
Maintenance Free

- 0030
- 0031
- 0042
- 0047
- 0064
- 0091
- 0108
- 0122
- 0123
- 0143
- 0172
- 0176
- 0178
- 0179
- 0180
- 0183
- 0186
- 0187
- 0190
- 0200
- 0215
- 0216
- 0222
- 0228
- 0230
- 0232
- 0243
- 0254
- 0275

0030

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	475	650	725	825	925
Height (in.):	2.6	2.4	2.33	2.25	2.2
Rate (lbs./in.):	1314	1085	1138	1322	1591
Effective Deflection (in.):	0.4	0.6	0.6	0.6	0.6
Natural Freq. (CPM.):	313	243	236	238	247
Maximum OD (in.):	4.1
Weight (lbs):	0.68

Pièce N °: W22-358-0030

0030484.63 Ko

0031

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	400	595	685	800	900
Height (in.):	4.3	4	3.9	3.8	3.6
Rate (lbs./in.):	716	790	822	852	880
Effective Deflection (in.):	0.6	0.8	0.8	0.9	1
Natural Freq. (CPM.):	252	217	206	194	186
Maximum OD (in.):	4.1
Weight (lbs):	1.22

Part Number: W22-358-0031

0031485.78 Ko

0042

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1980	2870	3344	3830	4340
Height (in.):	8.5	8	7.8	7.5	7.3
Rate (lbs./in.):	1707	1857	1922	1983	2039
Effective Deflection (in.):	1.2	1.5	1.7	1.9	2.1
Natural Freq. (CPM.):	175	151	143	135	129
Maximum OD (in.):	7.6
Weight (lbs):	9.84

Part Number: W22-358-0042

0042484.74 Ko Marshmellow

0047

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	420	600	690	790	910
Height (in.):	3.4	3.2	3.1	3	2.9
Rate (lbs./in.):	720	840	980	1080	1340
Effective Deflection (in.):	0.58	0.71	0.7	0.73	0.68
Natural Freq. (CPM.):	246	222	224	220	228
Maximum OD (in.):	3.28	3.3	3.35	3.4	3.46
Weight (lbs):	0.94

Part Number: W22-358-0047

0047489.45 Ko Marshmellow

0064

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1400	1770	2100	2480	2860
Height (in.):	5.95	5.6	5.4	5.3	5.1
Rate (lbs./in.):	1743	1886	1998	2103	2203
Effective Deflection (in.):	0.8	0.9	1.1	1.2	1.3
Natural Freq. (CPM.):	210	194	183	173	165
Maximum OD (in.):	5.2	5.4	5.5	5.6	5.7
Weight (lbs):	4.78

Part Number: W22-358-0064

0064459.27 Ko Marshmellow

0091

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1120	1630	1950	2220	2550
Height (in.):	6	5.6	5.4	5.3	5.1
Rate (lbs./in.):	1442	1598	1667	1730	1790
Effective Deflection (in.):	0.8	1	1.2	1.3	1.4
Natural Freq. (CPM.):	213	186	174	166	158
Maximum OD (in.):	4.8	4.9	5	5.1	5.2
Weight (lbs):	3.76

Part Number: W22-358-0091

0091459.87 Ko Marshmellow

0108

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	5500	7850	9150	10750	12250
Height (in.):	11.9	11.2	10.9	10.5	10.2
Rate (lbs./in.):	3422	3752	3897	4031	4156
Effective Deflection (in.):	1.6	2.1	2.3	2.7	2.9
Natural Freq. (CPM.):	148	130	123	115	110
Maximum OD (in.):	12.7
Weight (lbs):	37.28

Part Number: W22-358-0108

0108485.35 Ko Marshmellow

0122

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	2180	3060	3650	4100	4670
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	2273	2448	2524	2594	2558
Effective Deflection (in.):	1	1.2	1.4	1.6	1.8
Natural Freq. (CPM.):	192	168.2	156.3	150	142
Maximum OD (in.):	6.4	6.6	6.7	6.8	7
Weight (lbs):	7.84

Part Number: W22-358-0122

0122459.48 Ko Marshmellow

0123

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	570	825	950	1100	1225
Height (in.):	5.1	4.8	4.7	4.5	4.4
Rate (lbs./in.):	804	869	897	923	947
Effective Deflection (in.):	0.7	0.9	1.1	1.2	1.3
Natural Freq. (CPM.):	223	193	183	172	165
Maximum OD (in.):	4.2
Weight (lbs):	1.9

Part Number: W22-358-0123

0123485.23 Ko Marshmellow

0143

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	8200	11700	14000	16625	20000
Height (in.):	5.1	4.8	4.65	4.5	4.35
Rate (lbs./in.):	11200	13700	16600	20000	23600
Effective Deflection (in.):	0.73	0.85	0.84	0.83	0.85
Natural Freq. (CPM.):	220	203	205	206	204
Maximum OD (in.):	13.7
Weight (lbs):	19.58

Part Number: W22-358-0143

0143484.68 Ko Marshmellow

0172

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1400	1980	2340	2660	3080
Height (in.):	5.1	4.8	4.65	4.5	4.35
Rate (lbs./in.):	1720	2080	2360	2720	3200
Effective Deflection (in.):	0.81	0.95	0.99	0.98	0.96
Natural Freq. (CPM.):	208	193	189	190	192
Maximum OD (in.):	6.5	6.6	6.7	6.8	6.9
Weight (lbs):	4.42

Part Number: W22-358-0172

0172459.2 Ko Marshmellow

0176

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	2300	3350	4000	4600	5300
Height (in.):	8.5	8	7.8	7.5	7.3
Rate (lbs./in.):	2000	2400	2500	2600	3100
Effective Deflection (in.):	1.15	1.4	1.6	1.77	1.71
Natural Freq. (CPM.):	175	159	149	141	144
Maximum OD (in.):	7.9	8.1	8.3	8.4	8.6
Weight (lbs):	12.58

Part Number: W22-358-0176

0176459.12 Ko Marshmellow

0178

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	720	1080	1270	1480	1690
Height (in.):	5.1	4.8	4.7	4.5	4.4
Rate (lbs./in.):	1126	1266	1328	1387	1442
Effective Deflection (in.):	0.6	0.9	1	1.1	1.2
Natural Freq. (CPM.):	235	204	192	182	174
Maximum OD (in.):	4.9	5	5.1	5.1	5.2
Weight (lbs):	2.65

Part Number: W22-358-0178

0178459.88 Ko Marshmellow

0179

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	2300	3200	3800	4400	5150
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	2100	2700	3000	3300	3900
Effective Deflection (in.):	1.1	1.19	1.27	1.33	1.32
Natural Freq. (CPM.):	180	173	167	163	164
Maximum OD (in.):	8	8.2	8.3	8.4	8.6
Weight (lbs):	10

Part Number: W22-358-0200

0179458.94 Ko Marshmellow

0180

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	530	750	870	990	1100
Height (in.):	5.1	4.8	4.7	4.5	4.4
Rate (lbs./in.):	714	759	779	796	813
Effective Deflection (in.):	0.7	1	1.1	1.2	1.4
Natural Freq. (CPM.):	218	189	178	169	162
Maximum OD (in.):	4.3	4.4	4.5	4.5	4.7
Weight (lbs):	2.08

Part Number: W22-358-0180

0180458.93 Ko Marshmellow

0183

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	350	440	500	580	680
Height (in.):	3.4	3.2	3.1	3	2.9
Rate (lbs./in.):	525	531	695	892	1122
Effective Deflection (in.):	0.7	0.8	0.7	0.7	0.6
Natural Freq. (CPM.):	230	207	222	233	242
Maximum OD (in.):	3.2	3.3	3.4	3.4	3.5
Weight (lbs):	0.93

Part Number: W22-358-0183

0183459.71 Ko

0186

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1530	2220	2590	2970	3350
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	1652	1798	1862	1921	1976
Effective Deflection (in.):	0.9	1.2	1.4	1.5	1.7
Natural Freq. (CPM.):	195	169	159	151	144
Maximum OD (in.):	6.9	7.1	7.2	7.3	7.5
Weight (lbs):	7.29

Part Number: W22-358-0186

0186459.29 Ko Marshmellow

0187

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1540	2100	2460	2790	3280
Height (in.):	5.95	5.6	5.425	5.25	5.075
Rate (lbs./in.):	1440	1720	2110	2490	3040
Effective Deflection (in.):	1.07	1.22	1.17	1.12	1.08
Natural Freq. (CPM.):	182	170	174	178	181
Maximum OD (in.):	5.8	6	6.1	6.2	6.3
Weight (lbs):	5.07

Part Number: W22-358-0187

0187489.84 Ko Marshmellow

0190

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1990	2810	3280	3800	4400
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	1946	2213	2464	2792	3198
Effective Deflection (in.):	1	1.3	1.3	1.4	1.4
Natural Freq. (CPM.):	186	167	163	161	160
Maximum OD (in.):	6.9	7.1	7.2	7.3	7.4
Weight (lbs):	8.48

Part Number: W22-358-0190

0190459.12 Ko Marshmellow

0200

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	1965	2610	3070	3550	4050
Height (in.):	5.1	4.8	4.7	4.5	4.4
Rate (lbs./in.):	2684	2985	3118	3242	3359
Effective Deflection (in.):	0.7	0.9	1	1.1	1.2
Natural Freq. (CPM.):	220	201	190	180	171
Maximum OD (in.):	6.4	6.5	6.6	6.7	6.9
Weight (lbs):	5.78

Part Number: W22-358-0200

0200459.25 Ko Marshmellow

0215

Extension (%):	110	120	130
Load (lbs):	125	200	270
Length (in.):	7.15	7.8	8.45
Rate (lbs./in.):	120	80	120
Effective Deflection (in.):	1.04	2.5	2.25
Natural Freq. (CPM.):	184	119	125
Weight (lbs):	0.57

Part Number: W22-358-0215

0215459.02 Ko Marshmellow

0216

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	145	210	245	280	315
Height (in.):	1.49	1.4	1.36	1.31	1.27
Rate (lbs./in.):	705	760	783	805	826
Effective Deflection (in.):	0.2	0.3	0.3	0.3	0.4
Natural Freq. (CPM.):	414	358	336	319	304
Maximum OD (in.):	2.5
Weight (lbs):	0.12

Part Number: W22-358-0216

021683.17 Ko

0222

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	140	205	240	275	320
Height (in.):	2.98	2.8	2.71	2.63	2.54
Rate (lbs./in.):	310	360	420	500	580
Effective Deflection (in.):	0.45	0.57	0.57	0.55	0.55
Natural Freq. (CPM.):	280	249	249	253	253
Maximum OD (in.):	2.5
Weight (lbs):	0.24

Part Number: W22-358-0222

0222484.83 Ko

0228

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	2700	3820	4540	5100	5870
Height (in.):	10.2	9.6	9.3	9	8.7
Rate (lbs./in.):	1903	2060	2128	2191	2249
Effective Deflection (in.):	1.4	1.9	2.1	2.3	2.6
Natural Freq. (CPM.):	158	138	129	123	116
Maximum OD (in.):	8.5	8.7	8.9	9	9.3
Weight (lbs):	16.94

Part Number: W22-358-0228

0228459.91 Ko Marshmellow

0230

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	5200	7400	8600	10000	11400
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	4893	5993	6486	6942	7359
Effective Deflection (in.):	1.1	1.2	1.3	1.4	1.5
Natural Freq. (CPM.):	182	169	163	157	151
Maximum OD (in.):	9.5	9.78	9.9	10.08	10.24
Weight (lbs):	16.88

Part Number: W22-358-0230

0230459.41 Ko Marshmellow

0232

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	3800	5300	6200	7200	8400
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	3508	4141	4727	5492	6436
Effective Deflection (in.):	1.1	1.3	1.3	1.3	1.3
Natural Freq. (CPM.):	181	166	164	164	165
Maximum OD (in.):	8.2	8.5	8.7	9	9.3
Weight (lbs):	13.52

Part Number: W22-358-0232

0232459.6 Ko Marshmellow

0243

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	8300	12000	14000	16200	19600
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	8917	9690	10025	10335	10623
Effective Deflection (in.):	0.9	1.2	1.4	1.6	1.9
Natural Freq. (CPM.):	195	169	159	150	138
Maximum OD (in.):	13.4
Weight (lbs):	26.6

Part Number: W22-358-0243

0243459.58 Ko Marshmellow

0254

Compression (%):	15	20	22.5	25	27.5
Load (lbs):	6600	9600	11200	13000	15000
Height (in.):	6.8	6.4	6.2	6	5.8
Rate (lbs./in.):	7409	7775	8440	9425	10731
Effective Deflection (in.):	0.9	1.2	1.3	1.4	1.4
Natural Freq. (CPM.):	199	169	163	160	159
Maximum OD (in.):	12.6
Weight (lbs):	21.62

Part Number: W22-358-0254

0254459.57 Ko Marshmellow

0275

Extension (%):	110	120	130
Load (lbs):	175	275	375
Length (in.):	15.4	16.8	18.2
Rate (lbs./in.):	70	74	94
Effective Deflection (in.):	2.5	3.72	3.99
Natural Freq. (CPM.):	119	98	94
Weight (lbs):	1.38

Part Number: W22-358-0275

0275459.73 Ko Marshmellow