1. Cylindrical Roller Bearings
Cylindrical roller bearings are radial rolling bearings in which the rolling elements are cylindrical rollers. Cylindrical rollers and raceways are line contact bearings. Load capacity, mainly bear radial load. The rolling element has little friction with the ferrule rib and is suitable for high speed rotation. According to the ferrule with or without ribs, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN. The bearing is a structure in which the inner ring and the outer ring are separable. Models are divided into 200 series, 300 series, 400 series, 1000 series, 2200 series, 2300 series.


2. Features
Clearance: C0/C2/C3/C4/C5
Accuracy: P0/P6/P5/P4
Cage: steel stamping cage, copper alloy solid cage, polyamide forming cage.
Tape: N-type bearing has outer ring no ribs, and the ribs on both sides of the inner ring
NU type bearing outer ring has ribs on both sides, inner ring has no ribs
NJ type bearing has ribs on both sides of the outer ring, and the inner ring has ribs
The outer ring of the NF type has a rib on one side and a rib on both sides of the inner ring.
NUP type bearings have ribs on both sides of the outer ring, one side of the inner ring (fixed), and the other side is a detachable flat ring
RN type bearing has no outer ring.
NN bearing outer –ring has no ribs, and the inner ring has a middle rib in the middle of the rib.
NNU type bearing has a middle rib on the outer side of the outer ring and no rib on the inner side.

3. Technical Specifications

Tape	Model (New)	Inner	Outer	Wideth	Cr	Cor	Grease lubrication  speed	Oil lubrication speed	Weight
		(mm)	(mm)	(mm)	(kN)	(kN)	(r/min)	(r/min)	(kg）
Cylindrical roller bearing	NU202	15	35	11	7.98	5.5	15000	19000	0.047
Cylindrical roller bearing	NU203	17	40	12	9.12	7	14000	18000	0.068
Cylindrical roller bearing	NU204	20	47	14	25.8	24	12000	16000	0.117
Cylindrical roller bearing	NU205	25	52	15	27.5	26.8	11000	14000	0.14
Cylindrical roller bearing	NU206	30	62	16	36	35.5	8500	11000	0.214
Cylindrical roller bearing	NU207	35	72	17	46.5	48	7500	9500	0.311
Cylindrical roller bearing	NU208	40	80	18	51.5	53	7000	9000	0.394
Cylindrical roller bearing	NU209	45	85	19	58.5	63.8	6300	8000	0.45
Cylindrical roller bearing	NU210	50	90	20	61.2	69.2	6000	7500	0.505
Cylindrical roller bearing	NU211	55	100	21	80.2	95.5	5300	6700	0.68
Cylindrical roller bearing	NU212	60	110	22	89.8	102	5000	6300	0.86
Cylindrical roller bearing	NU213	65	120	23	102	118	4500	5600	1.08
Cylindrical roller bearing	NU214	70	125	24	112	135	4300	5300	1.2
Cylindrical roller bearing	NU215	75	130	25	125	155	4000	5000	1.32
Cylindrical roller bearing	NU216	80	140	26	132	165	3800	4800	1.58
Cylindrical roller bearing	NU217	85	150	28	158	192	3600	4500	2
Cylindrical roller bearing	NU218	90	160	30	172	215	3400	4300	2.44
Cylindrical roller bearing	NU219	95	170	32	208	262	3200	4000	2.96
Cylindrical roller bearing	NU220	100	180	34	235	302	3000	3800	3.58
Cylindrical roller bearing	NU221	105	190	36	185	235	2800	3600	4
Cylindrical roller bearing	NU222	110	200	38	278	360	2600	3400	5.02
Cylindrical roller bearing	NU224	120	215	40	322	422	2200	3000	6.11
Cylindrical roller bearing	NU226	130	230	40	258	352	2000	2800	7
Cylindrical roller bearing	NU228	140	250	42	302	415	1800	2400	9.1
Cylindrical roller bearing	NU230	150	270	45	360	490	1700	2200	11
Cylindrical roller bearing	NU232	160	290	48	405	552	1600	2000	14
Cylindrical roller bearing	NU234	170	310	52	425	650	1500	1900	17.1
Cylindrical roller bearing	NU236	180	320	52	425	650	1400	1800	18
Cylindrical roller bearing	NU238	190	340	55	512	745	1300	1700	23
Cylindrical roller bearing	NU240	200	360	58	570	842	1200	1600	26
Cylindrical roller bearing	NU244	220	400	65	702	1050	1000	1400	36
Cylindrical roller bearing	NU248	240	440	72	880	1345	900	1200	48.2

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