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Model: Sealed Heavy Duty Needle Roller Bearing With or Without Inner Ring
Brand: MBY
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Sealed Heavy Duty Needle Roller Bearing With or Without Inner Ring

Product Description
MBY® Needle roller bearings are roller bearings with cylindrical rollers that are small in diameter but long in length (L/D≥2.5). MBY® Needle roller bearings have a high radial load carrying capacity. And since they have a low cross section, needle roller bearings are extremely suitable for bearing applications where the radial space is limited.

MBY® offers a wide range of needle roller bearings including needle roller & cage assemblies, drawn cup and solid needle roller bearings. They can also be specified as cam followers and track roller bearings by applications. The major application markets include automotive, consumer product and general industrial goods.


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Shaft Diameter Bearing Designation Mass Approx Boundary Dimensions Basic Load Rating Limiting Speed
Sealed on one Side Sealed on both sides d Fw D C B Cr Dynamic Cor Static Oil
mm g mm n rpm
Without inner ring
10 NA4900 RS NA4900.2 RS 24.5 10 14 22 13 14 4560 4660 13000
12 NA4901 RS NA4901.2 RS 27.5 12 16 24 13 14 4950 5800 12000
15 NA4902 RS NA4902.2 RS 37 15 20 28 13 14 5980 9500 10000
17 NA4903 RS NA4903.2 RS 40 17 22 30 13 14 6050 10100 9000
20 NA4904 RS NA4904.2 RS 80 20 25 37 17 18 14900 17500 7500
25 NA4905 RS NA4905.2 RS 89.5 25 30 42 17 18 16300 21500 6500
30 NA4906 RS NA4906.2 RS 104 30 35 47 17 18 20050 24900 5500
35 NA4907 RS NA4907.2 RS 175 35 42 55 20 21 22500 37000 4800
40 NA4908 RS NA4908.2 RS 252 40 48 62 22 23 33050 50900 4200
45 NA4909 RS NA4909.2 RS 290 45 52 68 22 23 34800 56800 3900
50 NA4910 RS NA4910.2 RS 295 50 58 72 22 23 37800 61500 3500
14 RNA4900 RS RNA4900.2 RS 16 0 14 22 13 0 4560 4660 13000
16 RNA4901 RS RNA4901.2 RS 18 0 16 24 13 0 4950 5800 12000
20 RNA4902 RS RNA4902.2 RS 21.5 0 20 28 13 0 5980 9500 10000
22 RNA4903 RS RNA4903.2 RS 23 0 22 30 13 0 6050 10100 9000
25 RNA4904 RS RNA4904.2 RS 56 0 25 37 17 0 14900 17500 7500
30 RNA4905 RS RNA4905.2 RS 60 0 30 42 17 0 16300 21500 6500
35 RNA4906 RS RNA4906.2 RS 69 0 35 47 17 0 20050 24900 5500
42 RNA4907 RS RNA4907.2 RS 107 0 42 55 20 0 22500 37000 4800
48 RNA4908 RS RNA4908.2 RS 154 0 48 62 22 0 33050 50900 4200
52 RNA4909 RS RNA4909.2 RS 157 0 52 68 22 0 34800 56800 3900
58 RNA4910 RS RNA4910.2 RS 160 0 58 72 22 0 37800 61500 3500

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