Angular Contact Ball Bearing >> 7900AC Series < Online Inquiry >
Features
Individual bearings of this type are capable of taking radial loads and also axial loads in one direction. Four contact angles of 15, 25, 30, and 40 are available. The larger the contact angle, the higher the axial load capacity. For high-speed operation, however, the smaller contact angles are preferred. Usually, two bearings are used in duplex pairs, and the clearance between them must be adjusted properly.
Pressed steel cages are commonly used, however, for high precision bearings with a contact angle less than 30, polyamide resin cages are often used.
Applications
These bearings are mainly applied in the machine tool spindles, high-frequency motors, gas turbines, oil pumps, air compressors, printing machines and other installations.

Bearing No.

Boundary dimensions

Basic load ratings(kN)

Limiting speed

Mass

mm

Dynamic

Static

rpm

kg

d

D

B

Cr

Cor

Grease

Oil

7901AC

12

24

6

3.2

1.7

28,000

36,000

0.011

7902AC

15

28

7

4.5

2.5

24,000

32,000

0.015

7903AC

17

30

7

4.8

2.7

22,000

30,000

0.017

7904AC

20

37

9

6.4

4

20,000

28,000

0.035

7905AC

25

42

9

7.5

5.2

18,000

26,000

0.042

7906AC

30

47

9

7.9

6

16,000

24,000

0.048

7907AC

35

55

10

11.7

8.8

14,000

22,000

0.075

7908AC

40

62

12

14.1

10.1

12,000

20,000

0.110

7909AC

45

68

12

15.4

12.2

10,000

18,000

0.130

7910AC

50

72

12

16.1

14.8

8,000

16,000

0.140

7911AC

55

80

13

18.7

17.5

7,500

15,000

0.183

7912AC

60

85

13

19

18

7,000

14,000

0.198

7913AC

65

90

13

19.4

20

6,500

13,000

0.212

7914AC

70

100

16

27.1

26.3

6,300

12,000

0.342

7915AC

75

105

16

27

27.7

6,000

10,000

0.360

7916AC

80

116

16

27.5

29

5,500

10,000

0.381

7917AC

85

120

18

38

39.1

5,000

9,000

0.542

7918AC

90

125

18

39.8

44.5

5,000

8,500

0.560

7919AC

95

130

18

40

45.5

4,500

8,500

0.604

7920AC

100

140

20

46.4

50

4,300

8,200

0.808

7921AC

105

145

20

47

55.2

4,000

8,000

0.830

7922AC

110

150

20

49.7

55.3

3,800

7,500

0.880

7924AC

120

165

22

68.4

77.6

3,600

7,200

1.150

7926AC

130

180

24

73.4

88.1

3,400

7,000

1.540

7928AC

140

190

24

74.5

90.2

3,200

6,800

1.640

7930AC

150

210

28

95.6

117.2

3,000

6,500

2.970

7932AC

160

220

28

135.4

158.6

2,800

6,300

3.120

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