Cylindrical Roller Bearing >> N300 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

 

N308

40

90

23

1.5

1.5

58.5

57

8,000

9,400

0.643

N309

45

100

25

1.5

1.5

74

71

7,200

8,400

0.857

N310

50

110

27

2

2

87

86

6,500

7,700

1.11

N311

55

120

29

2

2

111

111

5,900

7,000

1.42

N312

60

130

31

2.1

2.1

124

126

5,500

6,500

1.76

N313

65

140

33

2.1

2.1

135

139

5,100

6,000

2.18

N314

70

150

35

2.1

2.1

158

168

4,700

5,500

2.65

N315

75

160

37

2.1

2.1

190

205

4,400

5,200

3.21

N316

80

170

39

2.1

2.1

190

207

4,100

4,800

3.77

N317

85

180

41

3

3

212

228

3,900

4,600

4.44

N318

90

190

43

3

3

240

265

3,700

4,300

5.18

N319

95

200

45

3

3

259

285

3,400

4,000

5.99

N320

100

215

47

3

3

299

335

3,300

3,800

7.32

N321

105

225

49

3

3

320

360

3,100

3,700

8.33

N322

110

240

50

3

3

360

400

3,000

3,500

9.77

N324

120

260

55

3

3

450

510

2,700

3,200

12.5

N326

130

280

58

4

4

560

665

2,500

2,900

17

N328

140

300

62

4

4

615

745

2,300

2,700

20.7

N330

150

320

65

4

4

665

805

2,100

2,500

24.7

<Back>   <Online Inquiry>