Heavy Type

17

0.669

62

2.441

17

0.669

750

600

450

370

20

0.787

72

2.835

19

0.748

1,000

800

600

490

25

0.981

80

3.150

21

0.827

1,200

960

750

590

30

1.181

90

3.543

23

0.905

1,650

1,325

920

810

. 35

1.378

100

3.937

25

0.984

1,850

1,475

1,100

910

40

1.575

110

4.331

27

1.063

2,200

1,750

1,300

1,075

45

1.772

120

4.724

29

1.142

3,000

2,400

1,750

1,475

50

1.968

130

5.118

31

1.220

3,400

2,725

2,100

1,675

55

2.165

110

5.512

33

1.299

4,000

3,200

2,400

1,950

60

2.362

150

5.905

35

1.378

4,400

3,525

2,650

2,150

65

2.559

160

6.299

37

1.457

5,100

4,100

3,100

2,500

70

2.756

180

7.087

42

1.654

5,700

4,550

3,500

2,800

75

2.953

190

7.480

45

1.772

7,000

5,600

4,200

3,400

80

3.150

200

7.874

48

1.890

8,600

6,875

5,100

4,200

85

3.346

210

8.268

52

2.047

9.200

7,350

5,500

4,500

90

3.543

225

8.858

54

2.126

10;000

8,000

6,200

4,900

95

3.740

250

9.842

55

2.165

12,000

9,600

7,000

5,900

100

3.937

265

10.433

60

2.362

13,900

11,100

8,400

6,800

* S. K. F Ball Bearing Company.

an absurd attitude and ball bearings are now greased in some way. Whatever the oil or grease used, it must be such as will prevent rust and be free from any acid or alkali likely to attack the surfaces of the balls or the ball races. A good oil or grease is one that keeps the surfaces bright and brilliant after months of use, and besides furnishes the desired lubrication. Vaseline, vaseline oil, or mineral