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

M321210 1.240 .480 .0394 .0436 .0827 1.106 140 .0109 65 226 .0218 120 277 .0327 166 310 .0436 201
M321213 1.240 .480 .0492 .0377 .0866 .765 181 .0094 59 319 .0188 111 429 .0282 155 524 .0377 233
M321215 1.240 .480 .0591 .0336 .0925 .569 247 .0084 56 457 .0168 118 642 .0252 194 814 .0336 282
M321608 1.240 .642 .0315 .0416 .0728 1.321 91 .0104 68 140 .0208 125 161 .0312 171 169 .0416 206
M321613 1.240 .642 .0492 .0358 .0846 .727 188 .0089 68 335 .0179 129 454 .0268 182 559 .0358 226
M321615 1.240 .642 .0591 .0359 .0945 .607 304 .0090 77 557 .0179 147 776 .0269 208 979 .0359 276
M321618 1.240 .642 .0690 .0278 .0965 .403 335 .0070 61 641 .0139 125 930 .0209 199 1209 .0278 281
M321620 1.240 .642 .0787 .0300 .1083 .382 535 .0075 75 1029 .0150 158 1497 .0225 251 1952 .0300 353
M341210 1.340 .484 .0394 .0495 .0886 1.256 151 .0124 65 237 .0247 120 278 .0371 164 297 .0495 198
M341213 1.340 .484 .0492 .0436 .0925 .885 194 .0109 60 331 .0218 112 431 .0327 156 512 .0436 221
M341215 1.340 .484 .0591 .0396 .0984 .669 262 .0099 58 472 .0198 111 649 .0297 187 809 .0396 276
M341413 1.340 .563 .0492 .0457 .0945 .928 217 .0114 70 367 .0228 131 473 .0342 182 555 .0457 224
M341415 1.340 .563 .0591 .0417 .1004 .705 293 .0104 68 523 .0208 129 713 .0312 181 882 .0417 267
M341615 1.340 .642 .0591 .0417 .1004 .706 309 .0104 76 553 .0209 143 753 .0313 202 932 .0417 259
M341620 1.340 .642 .0787 .0339 .1122 .431 505 .0085 69 962 .0170 146 1389 .0254 234 1799 .0339 332

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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