Self aligning ball bearings are suitable for applications where misalignment can arise from errors in mounting or shaft deflection. The steel balls, cage, and inner ring can rotate freely at a certain angle, as it is stated that the bearings have self-aligning features. Accordingly, misalignment of the bearing shaft due to the machining and installation of the shaft and housing will be automatically adjusted.

Physical Characteristics

• The self-aligning ball bearing has two rows of balls.
• A common concave sphered raceway in the outer ring.
• The center of whose curvature meets that of the bearing itself, so that the inner ring, balls and cage continue to rotate.
• The self-aligning ball bearing with a tapered bore or cylindrical bore can easily be fit to the shaft with an adapter assembly

Advantages Of Deep Groove Ball Bearings

• Have the lowest friction of all rolling bearings.
• Run cooler even at high speeds.
• Easy mounting and dismounting.
• The permissible operating speed is not dependent on the common criteria like heat generation or cage stability and strength

Bearing No

Size（mm）

Weight（kg）

Cylindrical bore

Tapered bore

d

D

B

rsmin

1203

1203K

17

40

12

0.6

0.072

2203

2203K

17

40

16

0.6

0.085

1303

1303K

17

47

14

1

0.135

2303

2303K

17

47

19

1

0.155

1204

1204K

20

47

14

1

0.12

2204

2204K

20

47

18

1

0.133

1304

1304K

20

52

15

1.1

0.165

2304

2304K

20

52

21

1.1

0.193

1205

1205K

25

52

15

1

0.14

2205

2205K

25

52

18

1

0.15

1305

1305K

25

62

17

1.1

0.255

2305

2305K

25

62

24

1.1

0.319

1206

1206K

30

62

16

1

0.22

2206

2206K

30

62

20

1

0.25

1306

1306K

30

72

19

1.1

0.385

2306

2306K

30

72

27

1.1

0.48

1207

1207K

35

72

17

1.1

0.32

2207

2207K

35

72

23

1.1

0.38

1307

1307K

35

80

21

1.5

0.51

2307

2307K

35

80

31

1.5

0.64

1208

1208K

40

80

18

1.1

0.42

2208

2208K

40

80

23

1.1

0.48

1308

1308K

40

90

23

1.5

0.72

2308

2308K

40

90

33

1.5

0.89

1209

1209K

45

85

19

1.1

0.47

2209

2209K

45

85

23

1.1

0.52

1309

1309K

45

100

25

1.5

0.96

2309

2309K

45

100

36

1.5

1.2

1210

1210K

50

90

20

1.1

0.53

2210

2210K

50

90

23

1.1

0.56

1310

1310K

50

110

27

2

1.25

2310

2310K

50

110

40

2

1.58

1211

1211K

55

100

21

1.5

0.71

2211

2211K

55

100

25

1.5

0.75

1311

1311K

55

120

29

2

1.6

2311

2311K

55

120

43

2

2.03

1212

1212K

60

110

22

1.5

0.9

2212

2212K

60

110

28

1.5

1.03

1312

1312K

60

130

31

2.1

2.03

2312

2312K

60

130

46

2.1

2.57

1213

1213K

65

120

23

1.5

1.15

2213

2213K

65

120

31

1.5

1.4

1313

1313K

65

140

33

2.1

2.54

2313

2313K

65

140

48

2.1

3.2

1214

1214K

70

125

24

1.5

1.3

2214

2214K

70

125

31

1.5

1.52

1314

1314K

70

150

35

2.1

3.19

2314

2314K

70

150

51

2.1

3.9

1215

1215K

75

130

25

1.5

1.41

2215

2215K

75

130

31

1.5

1.6

1315

1315K

75

160

37

2.1

3.65

2315

2315K

75

160

55

2.1

4.77

1216

1216K

80

140

26

2

1.74

2216

2216K

80

140

33

2

1.98

1316

1316K

80

170

39

2.1

4.32

2316

2316K

80

170

58

2.1

5.55

1217

1217K

85

150

28

2

2.1

2217

2217K

85

150

36

2

2.5

1317

1317K

85

180

41

3

5.15

2317

2317K

85

180

60

3

658

1218

1218K

90

160

30

2

2.56

2218

2218K

90

160

40

2

3.14

1318

1318K

90

190

43

3

5.95

2318

2318K

90

190

64

3

7.77

Application Of Deep Groove Ball Bearings

• Self-aligning ball bearings are used for commercial ground shafting applications.
• Since axial load capacity is limited, self-aligning ball bearings are not suitable for applications with heavy axial loads.
• Furthermore, if an adapter is used on the tapered bore of the inner diameter, installation and disassembly are much simpler and for this reason adapters are often used on equipment with drive shafts.