MaxLife Blue Stripe Die Springs | Medium Pressure

Photo of MaxLife blue die springMaxLife blue stripe die springs are made by Dayton Lamina and color coded white with a blue stripe to indicate that the springs have a medium pressure rating.

The efficient Operating Range is 25% to 50% of the free length (L). Maximum deflection = 50%. Long life = 40%. Optimum life = 25%. Travel to solid is for reference only and not intended for operation. Deflection beyond the efficient Operating Range could create a safety hazard or and result in premature spring failure.

drawing of spring deflection parameters

The chart below provides the 50% deflection (F) and spring force in pounds for each medium pressure MaxLife Die Spring. Also shown is the travel to solid deflection (S) and the spring force constant (K) for each spring.

Use the following equation to calculate the spring force in pounds for a given spring and deflection; Force = K x 10 x F, where K is the force constant and F is the deflection in inches.

50% Deflection

Travel to Solid

Load @ .1″

Hole
Dia.
(D)

Rod
Dia.
(d)

Free
Length
(L)

Buy
Online
(SKU)

Spring
Force
(lbs)

Deflection
(inches)
(F)

Deflection
(inches)
(S)

Constant
(lbs)
(K)

3/8

3/16

1

M37-100

37

0.5

0.572

7.3

1.25

M37-125

41

0.625

0.725

6.5

1.5

M37-150

38

0.75

0.896

5

1.75

M37-175

37

0.875

1.088

4.2

2

M37-200

38

1

1.163

3.8

2.5

M37-250

38

1.25

1.552

3

3

M37-300

30

1.5

1.821

2

12

M37-1200

42

6

7.8

0.7

1/2

9/32

1

M50-100

55

0.5

0.536

11

1.25

M50-125

55

0.625

0.719

8.8

1.5

M50-150

59

0.75

0.831

7.8

1.75

M50-175

51

0.875

0.972

5.8

2

M50-200

52

1

1.091

5.2

2.5

M50-250

63

1.25

1.464

5

3

M50-300

53

1.5

1.85

3.5

3.5

M50-350

56

1.75

2.19

3.2

4.5

M50-450

56

2.25

2.736

2.5

5.5

M50-550

58

2.75

3.436

2.1

6.5

M50-650

49

3.25

3.787

1.5

7.5

M50-750

45

3.75

4.075

1.2

12

M50-1200

48

6

6.215

0.8

5/8

11/32

1

M62-100

95

0.5

0.528

19

1.25

M62-125

89

0.625

0.665

14.3

1.5

M62-150

98

0.75

0.85

13

1.75

M62-175

86

0.875

0.982

9.8

2

M62-200

102

1

1.126

10.2

2.5

M62-250

91

1.25

1.476

7.3

3

M62-300

99

1.5

1.842

6.6

3.5

M62-350

88

1.75

2.229

5

4

M62-400

92

2

2.577

4.6

12

M62-1200

96

6

7.609

1.6

3/4

3/8

1

M75-100

188

0.5

0.516

37.6

1.25

M75-125

179

0.625

0.665

28.7

1.5

M75-150

167

0.75

0.788

22.2

1.75

M75-175

162

0.875

0.934

18.5

2

M75-200

161

1

1.081

16.1

2.5

M75-250

159

1.25

1.374

12.7

3

M75-300

158

1.5

1.667

10.5

3.5

M75-350

156

1.75

1.961

8.9

4

M75-400

154

2

2.254

7.7

4.5

M75-450

155

2.25

2.547

6.9

5

M75-500

153

2.5

2.841

6.1

5.5

M75-550

154

2.75

3.134

5.6

6

M75-600

153

3

3.426

5.1

6.5

M75-650

153

3.25

3.72

4.7

7.5

M75-750

154

3.75

4.306

4.1

12

M75-1200

150

6

6.945

2.5

1

1/2

1

M100-100

290

0.5

0.509

58

1.25

M100-125

330

0.625

0.663

52.8

1.5

M100-150

301

0.75

0.792

40.1

1.75

M100-175

294

0.875

0.944

33.6

2

M100-200

289

1

1.097

28.9

2.5

M100-250

283

1.25

1.403

22.6

3

M100-300

279

1.5

1.709

18.6

3.5

M100-350

277

1.75

2.014

15.8

4

M100-400

274

2

2.32

13.7

4.5

M100-450

272

2.25

2.625

12.1

5

M100-500

270

2.5

2.931

10.8

5.5

M100-550

270

2.75

3.236

9.8

6

M100-600

270

3

3.542

9

7

M100-700

266

3.5

4.154

7.6

8

M100-800

268

4

4.764

6.7

12

M100-1200

264

6

7.21

4.4

1-1/4

5/8

1.5

M125-150

389

0.75

0.792

51.8

1.75

M125-175

350

0.875

0.935

40

2

M125-200

357

1

1.156

35.7

2.5

M125-250

391

1.25

1.481

31.3

3

M125-300

383

1.5

1.804

25.5

3.5

M125-350

378

1.75

2.131

21.6

4

M125-400

374

2

2.457

18.7

4.5

M125-450

371

2.25

2.784

16.5

5

M125-500

370

2.5

3.112

14.8

5.5

M125-550

369

2.75

3.435

13.4

6

M125-600

366

3

3.758

12.2

7

M125-700

364

3.5

4.418

10.4

8

M125-800

364

4

5.068

9.1

10

M125-1000

360

5

6.375

7.2

12

M125-1200

360

6

7.681

6

1-1/2

3/4

2

M150-200

450

1

1.12

45

2.5

M150-250

525

1.25

1.361

42

3

M150-300

519

1.5

1.744

34.6

3.5

M150-350

520

1.75

1.966

29.7

4

M150-400

532

2

2.344

26.6

4.5

M150-450

513

2.25

2.595

22.8

5

M150-500

500

2.5

2.96

20

5.5

M150-550

506

2.75

3.203

18.4

6

M150-600

480

3

3.554

16

7

M150-700

497

3.5

4.162

14.2

8

M150-800

516

4

4.856

12.9

10

M150-1000

500

5

6.094

10

12

M150-1200

492

6

7.172

8.2

2

1

2.5

M200-250

1216

1.25

1.28

97.3

3

M200-300

1140

1.5

1.55

76

3.5

M200-350

1138

1.75

1.834

65

4

M200-400

1128

2

2.125

56.4

4.5

M200-450

1105

2.25

2.356

49.1

5

M200-500

1095

2.5

2.745

43.8

5.5

M200-550

1108

2.75

2.972

40.3

6

M200-600

1116

3

3.282

37.2

7

M200-700

1071

3.5

3.806

30.6

8

M200-800

1072

4

4.439

26.8

10

M200-1000

1050

5

5.86

21

12

M200-1200

990

6

6.775

16.5