BEARING NUMBER

MILITARY STANDARD REFERENCE NUMBER MS-

A

B

W

C

D

R

E

P

T

TRACK CAPACITY 180,000 PSI STEEL

BEARING RATING

SHAFT DIAMETER

MIN. CLAMP- ING DIA.

APPROX. WEIGHT LBS.

BORE DIA.

O.D.

WIDTH OVER END PLATES

OUTER RING WIDTH

SHAFT FILLET (MAX.)

CROWN RADIUS

END RING DIA. REF.

ANNULAR LUBE

GROOVE WIDTH REF.

MIN. TRACK CONTACT WIDTH

*AS A TRACK ROLLER

LIMIT LOAD

PUSH FIT

PRESS FIT

+.0000

-.0007

±.001

+.000

-.010

+.000

-.005

MAX.

TOL.

MAX.

TOL.

3AFC512

21438-103

.1900

.7500

.312

.280

.022

10

19/32

3/32

-

290

900

1200

.1894

+.0000

-.0005

.1902

+.0000

-.0005

7/16

.027

4AFC614

21438-104

.2500

.8750

.375

.345

.022

10

11/16

1/8

-

575

1430

1910

.2494

.2502

33/64

.047

6AFC817

21438-106

.3750

1.0625

.500

.455

.022

10

55/64

3/16

-

1000

2700

3600

.3744

.3752

43/64

.088

8AFC1021

21438-108

.5000

1.3125

.625

.580

.032

12 1/2

1 1/16

3/16

-

1785

4300

5700

.4994

.5002

27/32

.171

10AFC1224

21438-110

.6250

1.5000

.750

.705

.032

17 1/2

1 3/16

1/4

-

2600

6400

8500

.6244

.6252

61/64

.262

12AFC1628

21438-112

.7500

1.7500

1.000

.950

.032

25

1 13/32

1/4

-

4050

10700

14200

.7494

.7502

1 7/64

.493

14AFC1832

21438-114

.8750

2.0000

1.125

1.075

.032

27 1/2

1 1/2

1/4

-

5350

14400

19300

.8744

.8752

1 7/32

.695

20AFC2040

21438-120

1.2500

2.5000

1.250

1.200

.032

30

2 1/64

3/8

-

7100

18900

25300

1.2494

+.0000

-.0006

1.2503

+.0000

-.0006

1 5/8

1.060

24AFC2448

21438-124

1.5000

3.0000

1.500

1.440

.032

60

2 29/64

3/8

-

10900

28400

37900

1.4994

1.5003

2

2.070

28AFC2455

21438-128

1.7500

3.4375

1.500

1.440

.032

60

2 25/32

3/8

-

12400

33000

44100

1.7494

1.7502

2 9/32

2.710

†32AFC2462

21438-132

2.0000

3.8750

1.500

1.440

.032

60

3 1/8

3/8

-

14000

36700

48900

1.9994

+.0000

-.0007

2.0002

+.0000

-.0007

2 9/16

3.420

†36AFC2469

21438-136

2.2500

4.3125

1.500

1.440

.032

60

-

3/8

-

15600

41200

55000

2.2494

2.2502

2 55/64

4.230

†40AFC2476

21438-140

2.5000

4.7500

1.500

1.440

.032

60

3 51/64

3/8

-

17200

44900

59900

2.4994

2.5002

3 7/64

5.140

†44AFC2480

21438-144

2.7500

5.0000

1.500

1.440

.032

60

4 1/16

3/8

-

18100

48600

64800

2.7494

2.7502

3 11/32

5.490

4AL1214

-

.2500

.875

.750

.720

.022

-

43/64

3/16

.560

1550

2310

3080

.2494

+.0000

-.0005

.2502

+.0000

-.0005

37/64

.100

6AL1618

21439-106

.3750

1.1250

1.000

.940

.022

-

55/64

3/16

.750

2600

5370

7130

.3744

.3752

43/64

.206

8AL2022

21439-108

.5000

1.3750

1.250

1.190

.032

-

1 5/64

1/4

1.000

4250

9370

12500

.4994

.5002

57/64

.416

10AL2426

21439-110

.6250

1.6250

1.500

1.440

.032

-

1 19/64

3/8

1.125

5650

15000

19900

.6244

.6252

1 7/64

.693

12AL2830

21439-112

.7500

1.8750

1.750

1.690

.032

-

1 1/2

3/8

1.375

7950

21400

28500

.7494

.7502

1 9/32

1.080

14AL3234

21439-114

.8750

2.1250

2.000

1.940

.032

-

1 21/32

3/8

1.625

10650

28900

38500

.8744

.8752

1 15/32

1.550

16AL3638

21439-116

1.0000

2.3750

2.250

2.190

.032

-

1 55/64

3/8

1.797

13200

33600

44900

.9994

1.0002

1 37/64

2.150

†20AL4044

21439-120

1.2500

2.7500

2.500

2.440

.032

-

2 13/64

3/8

2.047

17300

44600

59500

1.2494

+.0000

-.0006

1.2502

+.0000

-.0006

1 27/32

3.090

†24AL4448

21439-124

1.5000

3.0000

2.750

2.690

.032

-

2 29/64

3/8

2.297

21200

53600

71300

1.4994

1.5002

1 63/64

3.820

†28AL4855

21439-128

1.7500

3.4375

3.000

2.940

.032

-

2 53/64

3/8

2.547

27000

69000

92000

1.7494

1.7502

2 9/32

5.400

†32AL4862

21439-132

2.0000

3.8750

3.000

2.940

.032

-

3 7/32

3/8

2.547

30400

76600

102000

1.9994

+.0000

-.0007

2.0002

+.0000

-.0007

2 9/16

6.800