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PRODUCT


NNF type bearings are double row full complement cylindrical roller bearings. Full complement cylindrical roller bearings (without a cage) incorporate a maximum number of rollers and are therefore suitable for very heavy radial loads at moderate speeds. They are used to locate the shaft axially in one direction and eventually to accommodate axial displacement of the shaft relative to the housing in the opposite direction.


NNF design bearings have a two-piece inner ring, held together by a retaining ring. The inner ring has three integral flanges and the outer ring has one integral central flange. The bearings are used to locate a shaft axially in both directions. The distance between the two rows of rollers enables these bearings to accommodate tilting moments. The outer ring of an NNF design bearing is little narrower than the inner ring. In applications with a rotating outer ring, it is no need for spacer rings between the inner ring and adjacent components. The outer ring has two snap ring grooves to simplify installation and save space axially, when the bearing is mounted in/on an adjacent component, e.g. in rope sheaves. The bearings have a contact PUR seal on both sides. Each seal is fitted in a recess on the inner ring shoulder. The seal lip exerts slight pressure against the outer ring raceway. The bearings are filled with a high-quality grease with good rust inhibiting properties. 


Application

The double row cylindrical roller bearings are usually used in industrial gearboxes, mechanical presses, electrical motors, pumps, compressors, steel mills, traction motors and axle boxes for railway vehicles and etc.


Bearing Model

 Dimensions(mm)

Basic Load Rating(kN)

Speed ratings(r/min)

Weight(Kg)

d

D

B

Dyn.C

Stat.Co

Grease

Oil

NNF5004

20

42

30

40,5

49

2400

4000

0.200

NNF5005

25

47

30

44,5

58

2160

3600

0.240

NNF5006

30

55

34

50

67

1800

3000

0.370

NNF5007

35

62

36

63

88

1560

2600

0.460

NNF5008

40

68

38

76

103

1440

2400

0.560

NNF5009

45

75

40

92

130

1320

2200

0.700

NNF5010

50

80

40

97

142

1200

2000

0.760

NNF5011

55

90

46

115

175

1080

1800

1.180

NNF5012

60

95

46

120

189

1020

1700

1.260

NNF5013

65

100

46

125

203

960

1600

1.330

NNF5014

70

110

54

168

265

840

1400

1.870

NNF5015

75

115

54

194

300

840

1400

1.960

NNF5016

80

125

60

203

325

780

1300

2.710

NNF5017

85

130

60

211

350

720

1200

2.830

NNF5018

90

140

67

305

510

660

1100

3.710

NNF5019

95

145

67

315

530

660

1100

3.880

NNF5020

100

150

67

330

550

600

1000

3.950

NNF5022

110

170

80

395

680

540

900

6.570

NNF5024

120

180

80

410

740

540

900

7.040

NNF5026

130

200

95

540

960

480

800

10.500

NNF5028

140

210

95

610

1100

450

750

11.100

NNF5030

150

225

100

710

1260

420

700

13.300

NNF5032

160

240

109

740

1360

390

650

16.600

NNF5034

170

260

122

960

1750

360

600

22.600

NNF5036

180

280

136

1140

2130

330

550

30.100

NNF5038

190

290

136

1160

2210

330

550

31.500

NNF5040

200

310

150

1350

2600

300

500

40.800

NNF5044

220

340

160

1570

3050

288

480

52.500

NNF5048

240

360

160

1630

3300

264

440

56.000

NNF5052

260

400

190

2380

4700

240

400

84.500

NNF5056

280

420

190

2600

5200

228

380

90.100

NNF5060

300

460

218

3000

5800

204

340

126.000

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