Machined Ring Needle Roller Bearings without Inner Ring RNA4900
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Machined Ring Needle Roller Bearings without Inner Ring RNA4900

Availability:
  • RNA4900

  • XSP or OEM

Machined Ring Needle Roller Bearings without Inner Ring RNA4900


XSP solid ring needle roller bearings have a compact structure, small radial size, and large load capacity. They are suitable for components with limited radial outline size. Needle roller bearings generally can only bear radial load, not axial load. The limit speed of the needle roller bearing is low. When the main engine speed is high, the needle roller bearing with a cage should be selected as much as possible. The assembled G2 needle rollers have a diameter variation of less than 2µm. Except for the full-filled needle roller bearings, high rigidity cages are used to accurately guide the needle roller parallel axis.


Needle roller bearings without inner ring RNA, NK type

Needle roller bearings without inner ring are suitable for components with limited radial dimensions. Since there is no inner ring, the surface of the journal that cooperates with them directly rolls. It is required that the surface hardness is not lower than HRC60, and the surface roughness Ra value is not greater than 0.63µm. This type of bearing does not limit the axial displacement of the shaft or the casing, and the limit speed is higher.


Needle roller bearings with inner ring NA, NKI type

Since this type of bearing has no ribs, the inner ring, outer ring, full set of needle rollers and cages can be installed separately, without limiting the axial displacement of the shaft or housing. Because the needle rollers are separated by a cage, friction is reduced, so it can be used in parts with higher speeds.


轴承型号

Bearing Designation

轴承型号

Boundary Dimensions

(mm)

基本额定负荷

Basic Load Rating

(N)

极限转速

Linmiting Speed

(Rpm)

重量

Mass(g)

现行型号

Current   Designation

原型号

Original Designation

Fw

D

B

动 Cr

Dynamic

静 cor

Static

脂润滑

Greas

近似

Approx

RNA4900

4644900

14

22

13

8006

9000

18322

16.8

RNA4901

4644901

16

24

13

5047

6352

15522

18.8

RNA4902

4644902

20

28

13

6447

9053

12716

22.2

RNA4903

4644903

22

30

13

7010

10010

16300

25.8

RNA4904

4644904

25

37

17

11912

16594

14060

58.1

RNA4905

4644905

30

42

17

13452

20475

12006

61.5

RNA4906

4644906

35

47

17

25000

35500

12000

70.6

RNA4907

4644907

42

55

20

19800

41500

8710

108

RNA4908

4644908

48

62

22

31036

63873

8120

141

RNA4909

4644909

52

68

22

37000

96500

7625

183

RNA4910

4644910

58

72

22

41000

72000

7500

193.5

RNA4911

4644911

63

80

25

50600

96580

6340

272.8

RNA4912

4644912

68

85

25

52800

91050

6100

294.7

RNA4913

4644913

72

90

25

57500

110500

6100

335

RNA4914

4644914

80

100

30

79000

154000

5130

490.6

RNA4915

4644915

85

105

30

78200

158000

5130

515.1

RNA4916

4644916

90

110

30

81000

170500

4927

543.8

RNA4917

4644917

100

120

35

98000

207000

4600

687.3

RNA4918

4644918

105

125

35

98500

239000

4000

720.7

RNA4919

4644919

110

130

35

112000

245000

3870

754.2

RNA4920

4644920

115

140

40

120000

264000

3710

1181.4

RNA4922

4644922

125

150

40

124000

270000

3350

1275.3

RNA4924

4644924

135

165

45

174000

386000

2920

1873.6

RNA4926

4644926

150

180

50

203000

460000

2900

2278.5

RNA4928

4644928

160

190

50

200000

460000

2790

2412.6

RNA4930

4644930

170

210

60

314800

640000

2750

4192.1

RNA4932

4644932

180

220

60

345100

745000

2700

4590



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