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Spherical roller bearing

Spherical roller bearings have two rows of rollers that are mainly used for withstanding radial loads and also axial loads in either direction. Self-aligning roller bearings have high radial load capacity, especially suitable for heavy load or vibration load, but can not withstand the axial load. Spherical roller thrust bearings have good self-aligning properties and can compensate for the coaxiality error. 

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Main structural form of Spherical roller bearing:

I. Cylindrical hole spherical roller bearing

Cylindrical hole spherical roller bearing has four types: 20000 C, 20000 Cc, 20000 CACM, 20000TN1.

20000C type bearing adopts symmetric spherical roller and steel plate stamping cage. The inner ring has no fixed ribs, and the roller is lengthened. The  bearing capacity is large, and the retaining ring is guided by the inner ring during the movement, so the self-aligning performance is good.

20000CC bearing is an improved version of the 20000 c-type bearing. The friction between the bearing roller and the raceway is reduced and the load  capacity is improved. 

20000 CACM type bearing adopts symmetric spherical roller and solid cage, with fixed small rib and movable intermediate retaining ring for inner ring. The main parameters 

and rated load of this type of bearing are the same as 20000CC bearing. 20000TN1 type bearing uses symmetrical spherical roller and nylon shaped cage. The inner ring has 

no fixed ribs and movable intermediate retaining ring. The cage is guided by rollers.

The 20,000 Cc, 20,000 CACM and 20000TN1 bearings are the structural forms that have been developed and optimized in recent years, and should be selected as the priority.

II. Tapered bore spherical roller bearing

For bearings with inner hole taper of 1:12, the rear code is indicated by K; For bearings with inner hole taper 1:30, the rear code is indicated by K30. When such bearings are matched with the conical shaft diameter, the radial clearance of the bearing can be adjusted by the inner ring moving along the axial  direction.

III. Spherical roller bearing mounted on a adapter sleeve

The tapered roller spherical roller bearings with the rear code K and K30 are mounted on the matching adapter sleeves, and then they will be the bearings with rear code K+H 

and K30+H . This type of bearing can be mounted on an optical axis without shoulder and is suitable for applications where the bearing needs to be removed and removed 

frequently. For bearings with lubricating oil groove and three lubricating oil holes on the outer ring of the above  bearings, the rear code is W33.

Dimension(mm)

Basic Load Rating(KN)

Bearing Designation

Limiting Speed(rpm)

Mounting Dimension(mm)

Mass(kg)

d

D

B

rsmin

Cr

Cor

Cylindrical Bore

Tapered Bore

Grease

Oil

da(min)

Da(max)

ra(max)

20

52

15

1.1

31.7

32.1

21304CA

21304CAK

6000

7500

27

45

1

0.175

20

52

15

1.1

35.8

35.2

21304CTN1

21304KCTN1

6000

7500

27

45

1

0.161

25

62

17

1.1

42.7

45.5

21305CA

21305CAK

5300

6700

32

55

1

0.277

25

62

17

1.1

45.5

45.8

21305CTN1

21305KCTN1

5300

6700

32

55

1

0.258

30

72

19

1.1

57.5

63.9

21306CA

21306CAK

4500

6000

37

65

1

0.412

30

72

19

1.1

63.8

65.4

21306CTN1

21306KCTN1

4500

6000

37

65

1

0.391

35

80

21

1.5

65.4

75.4

21307CA

21307CAK

4000

5300

44

71

1.5

0.542

35

80

21

1.5

74.4

77.7

21307CTN1

21307KCTN1

4000

5300

44

71

1.5

0.507

40

90

23

1.5

88.8

99

21308CA

21308CAK

3600

4500

49

81

1.5

0.75

40

90

23

1.5

88.8

99

21308CC

21308CCK

3600

4500

49

81

1.5

0.743

45

90

23

1.5

93.9

102

21308CTN1

21308KCTN1

3600

4500

49

81

1.5

0.717

45

100

25

1.5

105.7

118.4

21309CA

21309CAK

3200

4000

54

91

1.5

1.02

45

100

25

1.5

105.7

118.4

21309CC

21309CCK

3200

4000

54

91

1.5

1

45

100

25

1.5

111.2

123.6

21309CTN1

21309KCTN1

3200

4000

54

91

1.5

0.949

50

110

27

2

123.6

144.2

21310CA

21310CAK

2800

3800

60

100

2

1.3

50

110

27

2

128.7

144.2

21310CC

21310CCK

2800

3800

60

100

2

1.3

50

110

27

2

128.7

144.2

21310CTN1

21310KCTN1

2800

3800

60

100

2

1.22

55

120

29

2

146.3

175.1

21311CA

21311CAK

2600

3400

65

110

2

1.65

55

120

29

2

146.3

175.1

21311CC

21311CCK

2600

3400

65

110

2

1.65

55

120

29

2

149.3

170

21311CTN1

21311KCTN1

2600

3400

65

110

2

1.57

60

130

31

2.1

166.9

200.9

21312CA

21312CAK

2400

3200

72

118

2.1

2.08

60

130

31

2.1

166.9

200.9

21312CC

21312CCK

2400

3200

72

118

2.1

2.08

60

130

31

2.1

175.1

200.9

21312CTN1

21312KCTN1

2400

3200

72

118

2.1

1.96

65

140

33

2.1

187.5

234.8

21313CA

21313CAK

2200

3000

77

128

2.1

2.57

65

140

33

2.1

187.5

234.8

21313CC

21313CCK

2200

3000

77

128

2.1

2.57

65

140

33

2.1

198

235

21313CTN1

21313KCTN1

2200

3000

77

128

2.1

2.45

70

150

35

2.1

218.4

276

21314CA

21314CAK

2000

2800

82

138

2.1

3.11

70

150

35

2.1

218.4

276

21314CC

21314CCK

2000

2800

82

138

2.1

3.11

70

150

35

2.1

220

265

21314CTN1

21314KCTN1

2000

2800

82

138

2.1

2.97

75

160

37

2.1

245.1

311.1

21315CA

21315CAK

1900

2600

87

148

2.1

3.76

75

160

37

2.1

245.1

311.1

21315CC

21315CCK

1900

2600

87

148

2.1

3.76

75

160

37

2.1

245.1

311.1

21315CTN1

21315KCTN1

1900

2600

87

148

2.1

3.63

80

170

39

2.1

267.8

358.6

21316CA

21316CAK

1800

2400

92

158

2.1

4.47

80

170

39

2.1

267.8

358.6

21316CC

21316CCK

1800

2400

92

158

2.1

4.47

80

170

39

2.1

280

350

21316CTN1

21316KCTN1

1800

2400

92

158

2.1

4.33

85

180

41

3

306.9

396.6

21317CA

21317CAK

1700

2200

99

166

2.5

5.23

85

180

41

3

306.9

396.6

21317CC

21317CCK

1700

2200

99

166

2.5

5.23

85

180

41

3

310

390

21317CTN1

21317KCTN1

1700

2200

99

166

2.5

5.07

90

190

43

3

329.6

432.6

21318CA

21318CAK

1600

2200

104

176

2.5

6.17

90

190

43

3

329.6

432.6

21318CC

21318CCK

1600

2200

104

176

2.5

6.17

90

190

43

3

330

420

21318CTN1

21318KCTN1

1600

2200

104

176

2.5

5.88

95

200

45

3

365.7

499.6

21319CA

21319CAK

1700

2200

109

186

2.5

7.15

95

200

45

3

365.7

499.6

21319CC

21319CCK

1700

2200

109

186

2.5

7.15

95

200

45

3

365

499

21319CTN1

21319KCTN1

1700

2200

109

186

2.5

6.9

100

215

47

3

396.6

545.9

21320CA

21320CAK

1600

2000

114

201

2.5

8.81

100

215

47

3

396.6

545.9

21320CC

21320CCK

1600

2000

114

201

2.5

8.81

100

215

47

3

425

575

21320CTN1

21320KCTN1

1600

2000

114

201

2.5

8.63

105

225

49

3

420

575

21321CA

21321CAK

1500

1900

119

211

2.5

10

105

225

49

3

420

575

21321CC

21321CCK

1500

1900

119

211

2.5

10

110

240

50

3

460

635

21322CA

21322CAK

1400

1800

124

226

2.5

11.8

110

240

50

3

474

654

21322CC

21322CCK

1400

1800

124

226

2.5

11.8

25

52

18

1

40

42

22205CA

22205CAK

8000

10000

30

46

1

0.177

25

52

18

1

40

42

22205CC

22205CCK

8000

10000

30

46

1

0.177

25

52

18

1

42.2

45

22205CTN1

22205KCTN1

8000

10000

30

46

1

0.178

30

62

20

1

53.4

58.5

22206CA

22206CAK

6300

8000

36

56

1

0.3

30

62

20

1

53.4

58.5

22206CC

22206CCK

6700

8500

36

56

1

0.283

30

62

20

1

58.5

61.3

22206CTN1

22206KCTN1

6700

8500

36

56

1

0.271

30

62

20

1

34.5

39.3

22206MB

22206MBK

5300

6700

36

56

1

0.29

35

72

23

1.1

68.5

78.8

22207CA

22207CAK

5300

6700

42

65

1

0.45

35

72

23

1.1

70.5

81.4

22207CC

22207CCK

5600

7000

42

65

1

0.437

35

72

23

1.1

78.5

87

22207CTN1

22207KCTN1

5600

7000

42

65

1

0.428

35

72

23

1.1

46.6

61.3

22207MB

22207MBK

4800

6000

42

65

1

0.43

40

80

23

1.1

80.9

93.5

22208CA

22208CAK

5000

6000

47

73

1

0.54

40

80

23

1.1

80.9

93.5

22208CC

22208CCK

5000

6300

47

73

1

0.524

40

80

23

1.1

95.3

103

22208CTN1

22208KCTN1

5000

6300

47

73

1

0.524

40

80

23

1.1

51.3

70.6

22208MB

22208MBK

4500

5600

47

73

1

0.55

45

85

23

1.1

84.5

100.4

22209CA

22209CAK

4500

5600

52

78

1

0.58

45

85

23

1.1

82.9

98

22209CC

22209CCK

4500

6000

52

78

1

0.571

45

85

23

1.1

97.1

105.1

22209CTN1

22209KCTN1

4500

6000

52

78

1

0.555

45

85

23

1.1

53.8

75.4

22209MB

22209MBK

4000

5000

52

78

1

0.59

50

90

23

1.1

87

108.1

22210CA

22210CAK

4000

5000

57

83

1

0.62

50

90

23

1.1

86.3

105.1

22210CC

22210CCK

4300

5300

57

83

1

0.614

50

90

23

1.1

99.4

113.3

22210CTN1

22210KCTN1

4300

5300

57

83

1

0.596

50

90

23

1.1

53.8

75.4

22210MB

22210MBK

3800

4800

57

83

1

0.87

55

100

25

1.5

105.1

128.8

22211CA

22211CAK

3600

4500

64

91

1.5

0.84

55

100

25

1.5

105.1

128.8

22211CC

22211CCK

3800

5000

64

91

1.5

0.847

55

100

25

1.5

121.5

144.2

22211CTN1

22211KCTN1

3800

5000

64

91

1.5

0.823

55

100

25

1.5

61.8

89.8

22211MB

22211MBK

3400

4300

64

91

1.5

0.86

60

110

28

1.5

125.7

159.7

22212CA

22212CAK

3200

4000

69

101

1.5

1.2

60

110

28

1.5

125.7

159.7

22212CC

22212CCK

3600

4500

69

101

1.5

1.15

60

110

28

1.5

154.5

190.5

22212CTN1

22212KCTN1

3600

4500

69

101

1.5

1.14

60

110

28

1.5

84.3

125.7

22212MB

22212MBK

3200

4000

69

101

1.5

1.22

65

120

31

1.5

154.5

200.8

22213CA

22213CAK

2800

3600

74

111

1.5

1.6

65

120

31

1.5

154.5

200.8

22213CC

22213CCK

3200

4000

74

111

1.5

1.54

65

120

31

1.5

172

212

22213CTN1

22213KCTN1

3200

4000

74

111

1.5

1.53

65

120

31

1.5

91.2

131.8

22213MB

22213MBK

2800

3600

74

111

1.5

1.63

70

125

31

1.5

162.7

211.2

22214CA

22214CAK

2600

3400

79

116

1.5

1.7

70

125

31

1.5

154.5

200.8

22214CC

22214CCK

3000

3800

79

116

1.5

1.6

70

125

31

1.5

180

225

22214CTN1

22214KCTN1

3000

3800

79

116

1.5

1.6

70

125

31

1.5

97.9

146.3

22214MB

22214MBK

2600

3400

79

116

1.5

1.66

75

130

31

1.5

166.9

221.5

22215CA

22215CAK

2400

3200

84

121

1.5

1.8

75

130

31

1.5

166.9

221.5

22215CC

22215CCK

3000

3800

84

121

1.5

1.69

75

130

31

1.5

180

232

22215CTN1

22215KCTN1

3000

3800

84

121

1.5

1.67

75

130

31

1.5

97.85

146.3

22215MB

22215MBK

2400

3200

84

121

1.5

1.75

80

140

33

2

180.3

245.1

22216CA

22216CAK

2200

3000

90

130

2

2.2

80

140

33

2

180.3

242.1

22216CC

22216CCK

2800

3400

90

130

2

2.13

80

140

33

2

212

275

22216CTN1

22216KCTN1

2800

3400

90

130

2

2.09

80

140

33

2

118.5

185.4

22216MB

22216MBK

2200

3000

90

130

2

2.2

85

150

36

2

216.3

286.3

22217CA

22217CAK

2000

2800

95

140

2

2.7

85

150

36

2

218.4

290.5

22217CC

22217CCK

2600

3200

95

140

2

2.67

85

150

36

2

262

340

22217CTN1

22217KCTN1

2600

3200

95

140

2

2.64

85

150

36

2

149.4

234.8

22217MB

22217MBK

2000

2800

95

140

2

2.8

90

160

40

2

247.2

331.7

22218CA

22218CAK

1900

2600

100

150

2

3.28

90

160

40

2

257.5

348.1

22218CC

22218CCK

2400

3000

100

150

2

3.38

90

160

40

2

280

378

22218CTN1

22218KCTN1

2400

3000

100

150

2

3.35

90

160

40

2

173

280.2

22218MB

22218MBK

1900

2600

100

150

2

4

95

170

43

2.1

286.3

391.4

22219CA

22219CAK

1900

2600

107

158

2.1

4.1

95

170

43

2.1

290.5

401.7

22219CC

22219CCK

2200

2800

107

158

2.1

4.2

95

170

43

2.1

310

420

22219CTN1

22219KCTN1

2200

2800

107

158

2.1

4.1

95

170

43

2.1

218.4

331.7

22219MB

22219MBK

1800

2400

107

158

2.1

4.2

95

180

46

2.1

325

448

22220-95

22220-95K

2200

2600

112

168

2.1

5.21

100

180

46

2.1

319.3

437.8

22220CA

22220CAK

1800

2400

112

168

2.1

5

100

180

46

2.1

324.5

448.1

22220CC

22220CCK

2200

2600

112

168

2.1

5.01

100

180

46

2.1

368

492

22220CTN1

22220KCTN1

2200

2600

112

168

2.1

4.97

100

180

46

2.1

228.7

368.7

22220MB

22220MBK

1700

2200

112

168

2.1

5

110

200

53

2.1

417

592

22222CA

22222CAK

1700

2200

122

188

2.1

7.2

110

200

53

2.1

422

606

22222CC

22222CCK

1900

2400

122

188

2.1

7.32

110

200

53

2.1

297

479

22222MB

22222MBK

1500

1900

122

188

2.1

7.4

120

215

58

2.1

484

698

22224CA

22224CAK

1600

2000

132

203

2.1

9

120

215

58

2.1

494

711

22224CC

22224CCK

1700

2200

132

203

2.1

9.1

120

215

58

2.1

352

582

22224MB

22224MBK

1300

1700

132

203

2.1

9.2

130

230

64

3

567

834

22226CA

22226CAK

1400

1800

144

216

2.5

11.2

130

230

64

3

579

857

22226CC

22226CCK

1600

2000

144

216

2.5

11.2

130

230

64

3

420

729

22226MB

22226MBK

1200

1600

144

216

2.5

11.2

140

250

68

3

647

958

22228CA

22228CAK

1300

1700

154

236

2.5

14.5

140

250

68

3

659

984

22228CC

22228CCK

1400

1700

154

236

2.5

14.2

140

250

68

3

492

829

22228MB

22228MBK

1000

1400

154

236

2.5

14.5

150

270

73

3

760

1130

22230CA

22230CAK

1200

1600

164

256

2.5

18.6

150

270

73

3

772

1164

22230CC

22230CCK

1300

1600

164

256

2.5

18

150

270

73

3

523

900

22230MB

22230MBK

950

1300

164

256

2.5

18.5

 

Dimension(mm)

Basic Load Rating(KN)

Bearing Designation

Limiting Speed(rpm)

Mounting Dimension(mm)

Mass(kg)

d

D

B

rsmin

Cr

Cor

Cylindrical Bore

Tapered Bore

Grease

Oil

da(min)

Da(max)

ra(max)

160

290

80

3

850

1280

22232CA

22232CAK

1000

1400

174

276

2.5

23.1

160

290

80

3

660

1170

22232MB

22232MBK

900

1200

174

276

2.5

22.2

170

310

86

4

975

1500

22234CA

22234CAK

950

1200

188

292

3

29

170

310

86

4

740

1330

22234MB

22234MBK

850

1100

188

292

3

29

180

320

86

4

1010

1590

22236CA

22236CAK

900

1100

198

302

3

30

180

320

86

4

1040

1630

22236CA

22236CAK

1100

1300

198

302

3

29.4

180

320

86

4

757

1410

22236MB

22236MBK

800

1000

198

302

3

30

190

340

92

4

842

1555

22238MB

22238MBK

750

950

208

322

3

35.3

200

360

98

4

947

1790

22240MB

22240MBK

700

900

218

342

3

47.7

220

400

108

4

1200

2280

22244MB

22244MBK

630

800

238

382

3

61.5

280

500

130

5

1740

3480

22256CA

22256CAK

500

630

302

478

4

112.3

300

540

140

5

1895

3550

22260CA

22260CAK

450

560

322

518

4

134

320

580

150

5

2500

4560

22264CA

22264CAK

680

860

342

558

4

175

45

90

33

1.5

123.6

142.1

22308CA

22308CAK

4300

5300

49

81

1.5

1

45

90

33

1.5

123.6

142.1

22308CC

22308CCK

4500

6000

49

81

1.5

1.02

45

90

33

1.5

133.9

152.4

22308CTN1

22308KCTN1

4500

6000

48

81

1.5

1.02

45

90

33

1.5

75.7

93.2

22308MB

22308MBK

4000

5000