Precision Belleville Springs
  Inch Dimensions F=.25h F =.50h F=.75h F=h
Part

No.

D d t h O.H. h/t P

Ld

f

Deflec-

tion

Str-

ess

P

Ld

f

Deflec-

tion

Str-

ess

P

Ld

f

Deflec-

tion

Str-

ess

P

Ld

f

Deflec-

tion

Str-

ess

M501813 1.970 .724 .0492 .0633 .1122 1.286 178 .0158 49 277 .0316 90 322 .0474 123 342 .0633 148
M501815 1.970 .724 .0591 .0712 .1299 1.205 327 .0178 64 517 .0356 118 616 .0534 162 670 .0712 196
M501820 1.970 .724 .0787 .0595 .1378 .756 456 .0149 57 806 .0297 107 1085 .0446 159 1328 .0595 240
M501825 1.970 .724 .0984 .0635 .1614 .646 891 .0159 72 1618 .0318 141 2235 .0477 235 2798 .0635 346
M501830 1.970 .724 .1181 .0556 .1732 .471 1218 .0139 82 2303 .0278 176 3299 .0417 283 4252 .0556 402
M502020 1.970 .803 .0787 .0595 .1378 .756 468 .0149 60 826 .0298 114 1111 .0446 160 1360 .0595 230
M502025 1.970 .803 .0984 .0536 .1516 .545 720 .0134 60 1339 .0268 125 1891 .0402 204 2409 .0536 295
M502220 1.970 .882 .0787 .0636 .1417 .808 535 .0159 71 933 .0318 134 1240 .0477 187 1500 .0636 231
M502225 1.970 .882 .0984 .0556 .1535 .566 780 .0139 68 1445 .0278 129 2032 .0417 203 2580 .0556 294
M502513 1.970 1.000 .0492 .0634 .1122 1.289 201 .0159 62 312 .0317 114 363 .0476 156 384 .0634 188
M502515 1.97O 1.000 .0591 .0634 .1220 1.073 293 .0159 67 479 .0317 125 592 .0476 173 668 .0634 211
M502520 1.970 1 000 .0787 .0557 .1339 .708 464 .0139 66 829 .0279 124 1129 .0418 175 1396 .0557 217
M502525 1.970 1.000 .0984 .0558 .1535 .567 834 .0139 76 1543 .0279 145 2169 .0418 206 2754 .0558 290
M502530 1.970 1.000 .1181 .0438 .1614 .371 1021 .0110 65 1970 .0219 138 2871 .0329 218 3747 .0438 306

Materials Used: AISI - C0175 · ALLOY - 6150, INCONEL x 750 or 718, STAINLESS: 17/7 · AND STAINLESS 301 OR 302

Nomenclature: P Ld=load in lbs. Stress=stress in (psi) lbs/sq. in x 10³ f Deflection= deflection in inches

Notes: 1. Disc Springs are tested only at f=.75h 2. Stress value at .75h is tensile at Point 2 or 3, depending on which is higher.

Important Note: Disc springs of thickness greater than .236" (6mm) will automatically be supplied with reduced thickness and bearing flats as shown in this catalog. Disc springs of thickness .236" (6mm) are supported in full and reduced thickness as shown in this catalog; please make specific request.

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