(White with Red Stripe)
Efficient Operating Range is 20% to 37% deflection of free length. Maximum deflection is 37%; Long Life deflection is 25%; Optimum Life deflection is 20%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.
| 37% Deflection | 25% Deflection | 20% Deflection | Travel to Solid | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Part# | Free Length (In) |
Free Length (mm) |
Load (lbs) | Deflection Length | Load (lbs) | Deflection Length | Load (lbs) | Deflection Length | Load (lbs) | Deflection Length | Load @ .1″ Deflection (lbs) |
Hole Dia. | Rod Dia. |
| MH37-100 | 1 | 25.4 | 44 | 0.370 | 30 | 0.250 | 24 | 0.200 | 62 | 0.515 | 12.0 | 3/8 | 3/16 |
| MH37-125 | 1.25 | 31.8 | 42 | 0.463 | 28 | 0.313 | 23 | 0.250 | 52 | 0.576 | 9.0 | 3/8 | 3/16 |
| MH37-150 | 1.5 | 38.1 | 44 | 0.555 | 30 | 0.375 | 24 | 0.300 | 62 | 0.771 | 8.0 | 3/8 | 3/16 |
| MH37-175 | 1.75 | 44.5 | 47 | 0.648 | 32 | 0.438 | 25 | 0.350 | 66 | 0.922 | 7.2 | 3/8 | 3/16 |
| MH37-200 | 2 | 50.8 | 51 | 0.740 | 35 | 0.500 | 28 | 0.400 | 71 | 1.031 | 6.9 | 3/8 | 3/16 |
| MH37-250 | 2.5 | 63.5 | 40 | 0.925 | 27 | 0.625 | 22 | 0.500 | 53 | 1.226 | 4.3 | 3/8 | 3/16 |
| MH37-300 | 3 | 76.2 | 34 | 1.110 | 23 | 0.750 | 19 | 0.600 | 47 | 1.520 | 3.1 | 3/8 | 3/16 |
| MH37-1200 | 12 | 304.8 | 42 | 4.440 | 29 | 3.000 | 23 | 2.400 | 63 | 6.593 | 1.0 | 3/8 | 3/16 |
| MH50-100 | 1 | 25.4 | 63 | 0.370 | 43 | 0.250 | 34 | 0.200 | 75 | 0.443 | 17.0 | 1/2 | 9/32 |
| MH50-125 | 1.25 | 31.8 | 64 | 0.463 | 43 | 0.313 | 35 | 0.250 | 92 | 0.670 | 13.8 | 1/2 | 9/32 |
| MH50-150 | 1.5 | 38.1 | 58 | 0.555 | 39 | 0.375 | 32 | 0.300 | 76 | 0.720 | 10.5 | 1/2 | 9/32 |
| MH50-175 | 1.75 | 44.5 | 65 | 0.648 | 44 | 0.438 | 35 | 0.350 | 93 | 0.931 | 10.0 | 1/2 | 9/32 |
| MH50-200 | 2 | 50.8 | 61 | 0.740 | 41 | 0.500 | 33 | 0.400 | 84 | 1.023 | 8.2 | 1/2 | 9/32 |
| MH50-250 | 2.5 | 63.5 | 59 | 0.925 | 40 | 0.625 | 32 | 0.500 | 84 | 1.316 | 6.4 | 1/2 | 9/32 |
| MH50-300 | 3 | 76.2 | 64 | 1.110 | 44 | 0.750 | 35 | 0.600 | 95 | 1.639 | 5.8 | 1/2 | 9/32 |
| MH50-350 | 3.5 | 88.9 | 65 | 1.295 | 44 | 0.875 | 35 | 0.700 | 96 | 1.915 | 5.0 | 1/2 | 9/32 |
| MH50-1200 | 12 | 304.8 | 53 | 4.440 | 36 | 3.000 | 29 | 2.400 | 75 | 6.216 | 1.2 | 1/2 | 9/32 |
| MH62-100 | 1 | 25.4 | 107 | 0.370 | 73 | 0.250 | 58 | 0.200 | 125 | 0.431 | 29.0 | 5/8 | 11/32 |
| MH62-125 | 1.25 | 31.8 | 97 | 0.463 | 66 | 0.313 | 53 | 0.250 | 113 | 0.536 | 21.0 | 5/8 | 11/32 |
| MH62-150 | 1.5 | 38.1 | 100 | 0.555 | 68 | 0.375 | 54 | 0.300 | 110 | 0.609 | 18.0 | 5/8 | 11/32 |
| MH62-175 | 1.75 | 44.5 | 102 | 0.648 | 69 | 0.438 | 55 | 0.350 | 121 | 0.763 | 15.8 | 5/8 | 11/32 |
| MH62-200 | 2 | 50.8 | 108 | 0.740 | 73 | 0.500 | 58 | 0.400 | 130 | 0.892 | 14.6 | 5/8 | 11/32 |
| MH62-250 | 2.5 | 63.5 | 111 | 0.925 | 75 | 0.625 | 60 | 0.500 | 150 | 1.250 | 12.0 | 5/8 | 11/32 |
| MH62-300 | 3 | 76.2 | 118 | 1.110 | 80 | 0.750 | 64 | 0.600 | 164 | 1.550 | 10.6 | 5/8 | 11/32 |
| MH62-350 | 3.5 | 88.9 | 104 | 1.295 | 70 | 0.875 | 56 | 0.700 | 138 | 1.725 | 8.0 | 5/8 | 11/32 |
| MH62-400 | 4 | 101.6 | 102 | 1.480 | 69 | 1.000 | 55 | 0.800 | 142 | 2.053 | 6.9 | 5/8 | 11/32 |
| MH62-1200 | 12 | 304.8 | 111 | 4.440 | 75 | 3.000 | 60 | 2.400 | 161 | 6.439 | 2.5 | 5/8 | 11/32 |
| MH75-100 | 1 | 25.4 | 216 | 0.370 | 146 | 0.250 | 117 | 0.200 | 244 | 0.418 | 58.4 | 3/4 | 3/8 |
| MH75-125 | 1.25 | 31.8 | 202 | 0.463 | 136 | 0.313 | 109 | 0.250 | 242 | 0.554 | 43.6 | 3/4 | 3/8 |
| MH75-150 | 1.5 | 38.1 | 191 | 0.555 | 129 | 0.375 | 104 | 0.300 | 226 | 0.655 | 34.5 | 3/4 | 3/8 |
| MH75-175 | 1.75 | 44.5 | 194 | 0.648 | 131 | 0.438 | 105 | 0.350 | 230 | 0.766 | 30.0 | 3/4 | 3/8 |
| MH75-200 | 2 | 50.8 | 189 | 0.740 | 128 | 0.500 | 102 | 0.400 | 240 | 0.936 | 25.6 | 3/4 | 3/8 |
| MH75-250 | 2.5 | 63.5 | 199 | 0.925 | 134 | 0.625 | 108 | 0.500 | 264 | 1.228 | 21.5 | 3/4 | 3/8 |
| MH75-300 | 3 | 76.2 | 185 | 1.110 | 125 | 0.750 | 100 | 0.600 | 247 | 1.480 | 16.7 | 3/4 | 3/8 |
| MH75-350 | 3.5 | 88.9 | 185 | 1.295 | 125 | 0.875 | 100 | 0.700 | 251 | 1.757 | 14.3 | 3/4 | 3/8 |
| MH75-400 | 4 | 101.6 | 189 | 1.480 | 128 | 1.000 | 102 | 0.800 | 253 | 1.978 | 12.8 | 3/4 | 3/8 |
| MH75-450 | 4.5 | 114.3 | 190 | 1.665 | 128 | 1.125 | 103 | 0.900 | 242 | 2.127 | 11.4 | 3/4 | 3/8 |
| MH75-500 | 5 | 127 | 185 | 1.850 | 125 | 1.250 | 100 | 1.000 | 247 | 2.465 | 10.0 | 3/4 | 3/8 |
| MH75-550 | 5.5 | 139.7 | 187 | 2.035 | 127 | 1.375 | 101 | 1.100 | 254 | 2.764 | 9.2 | 3/4 | 3/8 |
| MH75-600 | 6 | 152.4 | 200 | 2.220 | 135 | 1.500 | 108 | 1.200 | 247 | 2.749 | 9.0 | 3/4 | 3/8 |
| MH75-1200 | 12 | 304.8 | 173 | 4.440 | 117 | 3.000 | 94 | 2.400 | 227 | 5.827 | 3.9 | 3/4 | 3/8 |
| MH100-100 | 1 | 25.4 | 335 | 0.370 | 226 | 0.250 | 181 | 0.200 | 350 | 0.387 | 90.5 | 1 | 1/2 |
| MH100-125 | 1.25 | 31.8 | 288 | 0.463 | 195 | 0.313 | 156 | 0.250 | 327 | 0.525 | 62.2 | 1 | 1/2 |
| MH100-150 | 1.5 | 38.1 | 273 | 0.555 | 185 | 0.375 | 148 | 0.300 | 308 | 0.627 | 49.2 | 1 | 1/2 |
| MH100-175 | 1.75 | 44.5 | 277 | 0.648 | 187 | 0.438 | 150 | 0.350 | 327 | 0.763 | 42.8 | 1 | 1/2 |
| MH100-200 | 2 | 50.8 | 284 | 0.740 | 192 | 0.500 | 154 | 0.400 | 346 | 0.900 | 38.4 | 1 | 1/2 |
| MH100-250 | 2.5 | 63.5 | 310 | 0.925 | 209 | 0.625 | 168 | 0.500 | 389 | 1.162 | 33.5 | 1 | 1/2 |
| MH100-300 | 3 | 76.2 | 275 | 1.110 | 186 | 0.750 | 149 | 0.600 | 351 | 1.415 | 24.8 | 1 | 1/2 |
| MH100-350 | 3.5 | 88.9 | 282 | 1.295 | 191 | 0.875 | 153 | 0.700 | 367 | 1.685 | 21.8 | 1 | 1/2 |
| MH100-400 | 4 | 101.6 | 271 | 1.480 | 183 | 1.000 | 146 | 0.800 | 353 | 1.928 | 18.3 | 1 | 1/2 |
| MH100-450 | 4.5 | 114.3 | 268 | 1.665 | 181 | 1.125 | 145 | 0.900 | 359 | 2.228 | 16.1 | 1 | 1/2 |
| MH100-500 | 5 | 127 | 268 | 1.850 | 181 | 1.250 | 145 | 1.000 | 368 | 2.538 | 14.5 | 1 | 1/2 |
| MH100-550 | 5.5 | 139.7 | 263 | 2.035 | 177 | 1.375 | 142 | 1.100 | 342 | 2.652 | 12.9 | 1 | 1/2 |
| MH100-600 | 6 | 152.4 | 262 | 2.220 | 177 | 1.500 | 142 | 1.200 | 348 | 2.952 | 11.8 | 1 | 1/2 |
| MH100-700 | 7 | 177.8 | 259 | 2.590 | 175 | 1.750 | 140 | 1.400 | 347 | 3.466 | 10.0 | 1 | 1/2 |
| MH100-800 | 8 | 203.2 | 260 | 2.960 | 176 | 2.000 | 141 | 1.600 | 345 | 3.922 | 8.8 | 1 | 1/2 |
| MH100-1200 | 12 | 304.8 | 289 | 4.440 | 195 | 3.000 | 156 | 2.400 | 397 | 6.100 | 6.5 | 1 | 1/2 |
| MH125-150 | 1.5 | 38.1 | 586 | 0.555 | 396 | 0.375 | 317 | 0.300 | 616 | 0.584 | 105.5 | 1-1/4 | 5/8 |
| MH125-175 | 1.75 | 44.5 | 590 | 0.648 | 399 | 0.438 | 319 | 0.350 | 655 | 0.720 | 91.0 | 1-1/4 | 5/8 |
| MH125-200 | 2 | 50.8 | 592 | 0.740 | 400 | 0.500 | 320 | 0.400 | 656 | 0.820 | 80.0 | 1-1/4 | 5/8 |
| MH125-250 | 2.5 | 63.5 | 588 | 0.925 | 398 | 0.625 | 318 | 0.500 | 688 | 1.081 | 63.6 | 1-1/4 | 5/8 |
| MH125-300 | 3 | 76.2 | 585 | 1.110 | 395 | 0.750 | 316 | 0.600 | 675 | 1.280 | 52.7 | 1-1/4 | 5/8 |
| MH125-350 | 3.5 | 88.9 | 603 | 1.295 | 408 | 0.875 | 326 | 0.700 | 713 | 1.530 | 46.6 | 1-1/4 | 5/8 |
| MH125-400 | 4 | 101.6 | 579 | 1.480 | 391 | 1.000 | 313 | 0.800 | 702 | 1.796 | 39.1 | 1-1/4 | 5/8 |
| MH125-450 | 4.5 | 114.3 | 573 | 1.665 | 387 | 1.125 | 310 | 0.900 | 702 | 2.040 | 34.4 | 1-1/4 | 5/8 |
| MH125-500 | 5 | 127 | 566 | 1.850 | 383 | 1.250 | 306 | 1.000 | 693 | 2.265 | 30.6 | 1-1/4 | 5/8 |
| MH125-550 | 5.5 | 139.7 | 568 | 2.035 | 384 | 1.375 | 307 | 1.100 | 711 | 2.549 | 27.9 | 1-1/4 | 5/8 |
| MH125-600 | 6 | 152.4 | 582 | 2.220 | 393 | 1.500 | 314 | 1.200 | 714 | 2.725 | 26.2 | 1-1/4 | 5/8 |
| MH125-700 | 7 | 177.8 | 559 | 2.590 | 378 | 1.750 | 302 | 1.400 | 696 | 3.220 | 21.6 | 1-1/4 | 5/8 |
| MH125-800 | 8 | 203.2 | 556 | 2.960 | 376 | 2.000 | 301 | 1.600 | 692 | 3.680 | 18.8 | 1-1/4 | 5/8 |
| MH125-1000 | 10 | 254 | 537 | 3.700 | 363 | 2.500 | 290 | 2.000 | 669 | 4.612 | 14.5 | 1-1/4 | 5/8 |
| MH125-1200 | 12 | 304.8 | 546 | 4.400 | 372 | 3.000 | 298 | 2.400 | 674 | 5.433 | 12.4 | 1-1/4 | 5/8 |
| MH150-200 | 2 | 50.8 | 892 | 0.740 | 603 | 0.500 | 482 | 0.400 | 933 | 0.774 | 120.6 | 1-1/2 | 3/4 |
| MH150-250 | 2.5 | 63.5 | 740 | 0.925 | 500 | 0.625 | 400 | 0.500 | 814 | 1.018 | 80.0 | 1-1/2 | 3/4 |
| MH150-300 | 3 | 76.2 | 730 | 1.110 | 494 | 0.750 | 395 | 0.600 | 843 | 1.281 | 65.8 | 1-1/2 | 3/4 |
| MH150-350 | 3.5 | 88.9 | 699 | 1.295 | 473 | 0.875 | 378 | 0.700 | 820 | 1.519 | 54.0 | 1-1/2 | 3/4 |
| MH150-400 | 4 | 101.6 | 789 | 1.480 | 533 | 1.000 | 426 | 0.800 | 942 | 1.767 | 53.3 | 1-1/2 | 3/4 |
| MH150-450 | 4.5 | 114.3 | 721 | 1.665 | 487 | 1.125 | 390 | 0.900 | 891 | 2.057 | 43.3 | 1-1/2 | 3/4 |
| MH150-500 | 5 | 127 | 688 | 1.850 | 465 | 1.250 | 372 | 1.000 | 856 | 2.300 | 37.2 | 1-1/2 | 3/4 |
| MH150-550 | 5.5 | 139.7 | 692 | 2.035 | 468 | 1.375 | 374 | 1.100 | 883 | 2.598 | 34.0 | 1-1/2 | 3/4 |
| MH150-600 | 6 | 152.4 | 682 | 2.220 | 461 | 1.500 | 368 | 1.200 | 873 | 2.843 | 30.7 | 1-1/2 | 3/4 |
| MH150-700 | 7 | 177.8 | 673 | 2.590 | 455 | 1.750 | 364 | 1.400 | 866 | 3.329 | 26.0 | 1-1/2 | 3/4 |
| MH150-800 | 8 | 203.2 | 693 | 2.960 | 468 | 2.000 | 374 | 1.600 | 940 | 4.018 | 23.4 | 1-1/2 | 3/4 |
| MH150-1000 | 10 | 254 | 759 | 3.700 | 513 | 2.500 | 410 | 2.000 | 947 | 4.620 | 20.5 | 1-1/2 | 3/4 |
| MH150-1200 | 12 | 304.8 | 639 | 4.440 | 432 | 3.000 | 346 | 2.400 | 826 | 5.735 | 14.4 | 1-1/2 | 3/4 |
| MH200-250 | 2.5 | 63.5 | 1036 | 0.925 | 700 | 0.625 | 560 | 0.500 | 1139 | 1.017 | 112.0 | 2 | 1 |
| MH200-300 | 3 | 76.2 | 971 | 1.110 | 656 | 0.750 | 525 | 0.600 | 1124 | 1.284 | 87.5 | 2 | 1 |
| MH200-350 | 3.5 | 88.9 | 971 | 1.295 | 656 | 0.875 | 525 | 0.700 | 1163 | 1.550 | 75.0 | 2 | 1 |
| MH200-400 | 4 | 101.6 | 940 | 1.480 | 635 | 1.000 | 508 | 0.800 | 1134 | 1.786 | 63.5 | 2 | 1 |
| MH200-450 | 4.5 | 114.3 | 957 | 1.665 | 647 | 1.125 | 518 | 0.900 | 1138 | 1.979 | 57.5 | 2 | 1 |
| MH200-500 | 5 | 127 | 981 | 1.850 | 663 | 1.250 | 530 | 1.000 | 1197 | 2.258 | 53.0 | 2 | 1 |
| MH200-550 | 5.5 | 139.7 | 1009 | 2.035 | 682 | 1.375 | 546 | 1.100 | 1241 | 2.503 | 49.6 | 2 | 1 |
| MH200-600 | 6 | 152.4 | 1041 | 2.220 | 704 | 1.500 | 563 | 1.200 | 1321 | 2.817 | 46.9 | 2 | 1 |
| MH200-700 | 7 | 177.8 | 1002 | 2.590 | 677 | 1.750 | 542 | 1.400 | 1274 | 3.291 | 38.7 | 2 | 1 |
| MH200-800 | 8 | 203.2 | 977 | 2.960 | 660 | 2.000 | 528 | 1.600 | 1284 | 3.892 | 33.0 | 2 | 1 |
| MH200-1000 | 10 | 254 | 984 | 3.700 | 665 | 2.500 | 532 | 2.000 | 1261 | 4.740 | 26.6 | 2 | 1 |
| MH200-1200 | 12 | 304.8 | 932 | 4.440 | 630 | 3.000 | 504 | 2.400 | 1233 | 5.870 | 21.0 | 2 | 1 |
