Cylindrical Roller Bearings

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In bearings of this type, the cylindrical rollers are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.

There are different types designated as NU, NJ, NUP, N, NF (for single-row bearings), NNU, and NN (for double-row bearings depending on the design or absence of side ribs).

The outer and inner rings of all types are separable.

Some cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.

Pressed steel or machined brass cages are generally used, but sometimes molded polyamide cages are also used.

Bearing Number	Bore Dia	Outer DIa	Width	Size
4.134 Inch \| 105 Millimeter x 8.858 Inch \| 225 Millimeter x 1.929 Inch \| 49 Millimeter NACHI NU321MY C3 Cylindrical Roller Bearings	300 mm	395 mm	35 mm	2.5 mm
2.756 Inch \| 70 Millimeter x 5.906 Inch \| 150 Millimeter x 1.378 Inch \| 35 Millimeter NACHI NU314MY C3 Cylindrical Roller Bearings	250 mm	355 mm	40 mm	2 mm
2.559 Inch \| 65 Millimeter x 5.512 Inch \| 140 Millimeter x 1.299 Inch \| 33 Millimeter NACHI NU313 Cylindrical Roller Bearings	120 mm	150 mm	16 mm	1 mm
2.756 Inch \| 70 Millimeter x 5.906 Inch \| 150 Millimeter x 1.378 Inch \| 35 Millimeter NACHI NU314 Cylindrical Roller Bearings	200 mm	295 mm	35 mm	2 mm
2.953 Inch \| 75 Millimeter x 6.299 Inch \| 160 Millimeter x 1.457 Inch \| 37 Millimeter NACHI NU315MYC3 Cylindrical Roller Bearings	100 mm	140 mm	16 mm	1 mm
2.559 Inch \| 65 Millimeter x 5.512 Inch \| 140 Millimeter x 1.299 Inch \| 33 Millimeter NACHI NU313MY C3 Cylindrical Roller Bearings	45 mm	70 mm	10 mm	0.6 mm
2.165 Inch \| 55 Millimeter x 4.724 Inch \| 120 Millimeter x 1.142 Inch \| 29 Millimeter NACHI NU311MY C3 Cylindrical Roller Bearings	120 mm	150 mm	16 mm	1 mm
1.969 Inch \| 50 Millimeter x 4.331 Inch \| 110 Millimeter x 1.063 Inch \| 27 Millimeter NACHI NU310MY C3 Cylindrical Roller Bearings	30 mm	55 mm	10 mm	0.6 mm
1.969 Inch \| 50 Millimeter x 4.331 Inch \| 110 Millimeter x 1.063 Inch \| 27 Millimeter NACHI NU310 EG Cylindrical Roller Bearings	190 mm	240 mm	25 mm	1 mm
0.984 Inch \| 25 Millimeter x 2.441 Inch \| 62 Millimeter x 0.669 Inch \| 17 Millimeter NACHI NU305 Cylindrical Roller Bearings	300 mm	360 mm	25 mm	2.5 mm
1.772 Inch \| 45 Millimeter x 2.953 Inch \| 75 Millimeter x 0.906 Inch \| 23 Millimeter NACHI NN3009M2KC9NAP4 Cylindrical Roller Bearings	400 mm	480 mm	35 mm	2.5 mm
1.969 Inch \| 50 Millimeter x 3.15 Inch \| 80 Millimeter x 0.906 Inch \| 23 Millimeter NACHI NN3010M2KC1NAP4 Cylindrical Roller Bearings	80 mm	110 mm	13 mm	0.6 mm