Cylindrical Roller Bearing >> NJ300 Series < Online Inquiry >
Features
Cylindrical rollers have linear contact with the raceway, and the bearings can carry heavier radial load. Cylindrical bearing applications are found in situations characterized by heavy load and shock load and also high rotation speed. The N type and NU type bearings can be movable along the shaft. They can adapt to the position changes between the shaft and housing caused by the thermal expansion or the mounting error and are most suitable for free end shafts. NJ and NF types can accept certain axial load in one direction, and NH and NUP types can accept certain axial load in two directions. Inner ring and outer ring can be separable, so they are convenient to mount and dismount.
Applications
These bearings are mostly found in middle-sized and large-sized motors, electricity generators, internal combustion engines, gas turbines, machine tool spindles, deceleration devices, unloading and lifting machines and other industrial machines.

Bearing No.

Boundary dimensions

Basic load rating(kN)

Limiting speeds

Mass

mm

Dynamic

Static

rpm

Kg

d

D

B

rs min

rs1 min

Cr

Cor

Grease

Oil

 

NJ304E

20

52

15

1.1

0.6

31.5

26.9

13,000

15,000

0.176

NJ305E

25

62

17

1.1

1.1

41.5

37.5

11,000

13,000

0.275

NJ306E

30

72

19

1.1

1.1

53

50

9,300

11,000

0.398

NJ307E

35

80

21

1.5

1.1

71

71

8,100

9,600

0.545

NJ308

40

90

23

1.5

1.5

58.5

57

8,000

9,400

0.658

NJ308E

40

90

23

1.5

1.5

83

81.5

7,200

8,500

0.754

NJ309

45

100

25

1.5

1.5

74

71

7,200

8,400

0.877

NJ309E

45

100

25

1.5

1.5

97.5

98.5

6,500

7,600

0.996

NJ310

50

110

27

2

2

87

86

6,500

7,700

1.14

NJ310E

50

110

27

2

2

110

113

5,900

6,900

1.3

NJ311

55

120

29

2

2

111

111

5,900

7,000

1.45

NJ311E

55

120

29

2

2

137

143

5,300

6,300

1.65

NJ312

60

130

31

2.1

2.1

124

126

5,500

6,500

1.8

NJ312E

60

130

31

2.1

2.1

150

157

4,900

5,800

2.05

NJ313

65

140

33

2.1

2.1

135

139

5,100

6,000

2.23

NJ313E

65

140

33

2.1

2.1

181

191

4,600

5,400

2.54

NJ314

70

150

35

2.1

2.1

158

168

4,700

5,500

2.71

NJ314E

70

150

35

2.1

2.1

205

222

4,200

5,000

3.1

NJ315

75

160

37

2.1

2.1

190

205

4,400

5,200

3.28

NJ315E

75

160

37

2.1

2.1

240

263

4,000

4,700

3.74

NJ316

80

170

39

2.1

2.1

190

207

4,100

4,800

3.86

NJ316E

80

170

39

2.1

2.1

256

282

3,700

4,400

4.22

NJ317

85

180

41

3

3

212

228

3,900

4,600

4.54

NJ317E

85

180

41

3

3

291

330

3,500

4,100

4.81

NJ318

90

190

43

3

3

240

265

3,700

4,300

5.3

NJ318E

90

190

43

3

3

315

355

3,300

3,900

5.72

NJ319

95

200

45

3

3

259

285

3,400

4,000

6.13

NJ319E

95

200

45

3

3

335

385

3,100

3,600

6.62

NJ320

100

215

47

3

3

299

335

3,300

3,800

7.49

NJ320E

100

215

47

3

3

380

425

2,900

3,500

8.57

NJ321

105

225

49

3

3

320

360

3,100

3,700

8.53

NJ322

110

240

50

3

3

360

400

3,000

3,500

10

NJ322E

110

240

50

3

3

450

525

2,700

3,100

11.1

NJ324

120

260

55

3

3

450

510

2,700

3,200

12.8

NJ324E

120

260

55

3

3

530

610

2,400

2,800

13.9

NJ326

130

280

58

4

4

560

665

2,500

2,900

17.4

NJ326E

130

280

58

4

4

615

735

2,200

2,600

19.4

NJ328

140

300

62

4

4

615

745

2,300

2,700

21.2

NJ328E

140

300

62

4

4

665

795

2,100

2,400

23.2

NJ330

150

320

65

4

4

665

805

2,100

2,500

25.3

NJ330E

150

320

65

4

4

760

920

1,900

2,300

28.4

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