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Single row cylindrical roller bearings are separable bearings. The rollers are guided by the two ribs of bearing rings. The bearings with cage are units comprising solid inner and outer ring together with cylindrical roller and cage assemblies. Therefore, these bearings are easy to be mounted and dismounted, especially where the load conditions are such that interference fits are required for both rings.
Single row cylindrical roller bearings are commonly used to carry radial load and, due to the line contact of the rollers and raceways, are suitable for higher radial loading capacity and good impact resistance than radial ball bearings with same dimensions, but they can ‘t accommodate axial loads.
There are several different designs. The structures are distinguished by ribs. The most popular types are the N, NU, NJ, NF.
N design
---The inner ring of this type has two ribs and outer ring without rib. The bearings are commonly used as non-locating bearings.
NU design
---The outer ring of this type has two ribs and inner ring without rib. The bearings are commonly used as non-locating bearings.
NJ design
---The outer ring of this type has two ribs and inner ring with one rib. The bearings are suitable for the axial locations of the shaft in one direction.
NF design
---The inner ring of this type has two ribs and outer ring with one rib. The bearings can be used as locating bearings, they can accommodate axial loads in both directions.

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  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  120	180	28	135	-	2	130	168	NU 1024M	32124H	2.96	3400	4000
  	180	28	135	-	2	130	168	NJ 1024	42124	3.09	3400	4000
  	215	40	-	191.5	2.1	250	211	N 224E	2224H	6.2	2400	3000
  	215	40	143.5	-	2.1	322	422	NU 224E	32224H	6.2	2400	3000
  	215	40	143.5	-	2.1	322	422	NJ 224E	42224H	6.2	2400	3000
  	240	80	150	-	3	477	408	NJ 624	42724	17.8	2400	3200
  	260	86	154	-	3	632	868	NU 2324E	32624	23.8	1900	2400
  	310	72	-	260	5	660	530	N 424	2424	29	1900	2400
  	310	72	170	-	5	642	772	NU 424	32424	29.1	1900	2400
  	310	72	170	-	5	642	772	NJ 424	42424	29.1	1900	2400
  130	200	33	148	-	2	152	212	NU 1026	32126	3.84	3200	3800
  	250	80	158	-	3	547	473	NJ 626	42726	18.7	2200	3000
  	280	58	-	243	4	515	410	N 326E	2326	17.8	1800	2200
  	280	58	167	-	4	492	620	NU 326E	32326	17.9	1800	2200
  	280	58	167	-	4	492	620	NJ 326E	42326	18.2	1800	2200
  	280	93	-	243	4	770	685	N 2326	2626	29	1800	2200
  	280	93	167	-	4	748	1060	NU 2326	32626	28.7	1800	2200
  	280	93	167	-	4	748	1060	NJ 2326	42626	29	1800	2200
  	340	78	185	-	5	782	942	NU 426	32426	41.5	1500	1900
  	340	78	185	-	5	782	942	NJ 426	42426	41.7	1500	1900
  140	190	24	-	178	1.5	126	190	N1928	-	2	3200	3800
  	190	24	154	-	1.5	126	190	NU1928	-	1.98	3200	3800
  	210	33	158	-	1.1	190	270	NU1028	32128	3.87	2400	3000
  	250	68	169	-	3	500	730	NU2228	-	14.7	2000	2600
  	250	68	169	-	3	438	700	NJ 2228	42528	17	2000	2600
  	300	62	-	260	4	545	690	NF 328	12328	21.8	1800	2200

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  190	260	42	208	-	2	239	216	NU 2938	2032938	6.45	2000	2800
  	290	46	215	-	2.1	395	595	NU1038	32138	11	2000	2800
  	340	55	-	302	4	630	830	N238	2238	22.9	1600	1900
  	340	55	231	-	4	512	745	NU 238	32238	21.6	1600	1900
  	340	55	231	-	4	512	745	NJ 238	42238	22	1600	1900
  	340	92	-	299	4	910	1400	N2238	-	38.6	1600	1900
  	340	92	231	-	4	975	1570	NU 2238	32538	38.6	1600	1900
  	400	78	-	345	5	882	1190	N 338	2338	50.2	1200	1500
  	400	78	245	-	5	882	1190	NU 338	32338	48.5	1200	1500
  200	310	51	-	281	2	408	408	N 1040	42140	10.2	1900	2400
  	310	51	229	-	2.1	408	615	NU 1040	32140	14.3	1900	2400
  	310	51	229	-	2.1	408	615	NJ 1040	42140	14.7	1900	2400
  	310	66	229	-	3	560	925	NU2040	-	18.5	1900	2400
  	360	58	-	316	4	570	842	N 240	2240	26.8	1500	1800
  	360	58	244	-	4	570	842	NU 240	32240	26.5	1500	1800
  	360	58	244	-	4	570	842	NJ 240	42240	27.1	1500	1800
  	420	138	-	360	4	1510	2240	N 2340	2640	94.5	1200	1500
  	420	165	260	-	5	1730	2660	NU 3340	3032340	118	1200	1500
  220	340	56	250	-	3	448	685	NU 1044	32144	19.3	1800	2200
  	340	56	250	-	3	448	685	NJ 1044	42144	19.6	1800	2200
  	400	65	-	350	4	702	1050	N 244	2244	36.7	1500	1800
  	400	65	270	-	4	702	1050	NU 244	32244	35	1500	1800
  	400	65	270	-	4	702	1050	NJ 244	42244	35.4	1500	1800
  	400	108	259	-	4	1360	2330	NU 2244	32544	62.2	1300	1600
  	400	108	270	-	4	1360	2330	NJ 2244	42544	62.2	1300	1600
  	460	88	284	-	5	1080	1465	NU 344	32344	75.6	1200	1500

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  220	460	145	284	-	5	1780	2620	NU 2344	32644	114	1000	1300
  230	350	70	-	316	2.1	856	610	NF 646	402746	26	1500	1900
  	370	80	-	334	3	826	795	N 646	2746	37	1400	1800
  240	360	37	-	325	2.1	388	392	N 0048	7002148	14.7	1000	1400
  	360	56	270	-	3	470	745	NU 1048	32148	20.4	1700	2000
  	360	56	270	-	3	470	745	NJ 1048	42148	21	1700	2000
  	360	92	270	-	3	855	938	NU 3248	3032148	35.5	1000	1300
  	400	74	282	-	4	975	1500	NU1148	-	39.1	1300	1600
  	440	72	-	395	4	1100	1550	N248	2248	50.3	1300	1600
  	440	72	295	-	4	880	1345	NU 248	32248	46.9	1300	1600
  	440	72	295	-	4	880	1345	NJ 248	42248	49.6	1300	1600
  	440	120	295	-	4	1700	2500	NU2248E	-	84.1	1200	1500
  	500	95	310	-	5	1290	1810	NU 348	32348	97.7	1000	1300
  	500	155	310	-	5	2000	2900	NU2348	-	150	1000	1300
  250	380	50	-	347	4	660	643	N 650	2750	19.8	1300	1700
  260	400	44	-	360	3	552	603	N 0052	7002152	22.7	1500	1800
  	400	65	-	364	4	621	630	N 1052	2152	30.8	1500	1800
  	400	65	296	-	4	592	932	NU 1052	32152	29.5	1500	1800
  	440	144	298.5	-	4	2300	3500	NU3152E	-	92.9	1200	1500
  	480	80	320	-	5	1100	1580	NU 252	32252	67.2	1100	1400
  280	350	33	299	-	2.1	210	440	NJ1856	-	7.31	1500	1800
  	360	30	-	339	4	325	605	N1856X3	-	7.76	1400	1700
  	380	46	-	354	2.1	495	875	N1956	-	15.3	1400	1700
  	380	46	306	-	3	450	785	NU1956	-	14.5	1400	1700
  	420	65	-	384	4	840	1500	N1056	2156	33	1400	1700
  	420	82	316	-	4	1050	1900	NU2056	-	41.8	1400	1700
  	420	65	316	-	4	600	965	NU 1056	32156	33.4	1400	1700

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  300	420	56	332	-	3	500	850	NU1960MA	-	23.4	1200	1500
  	460	74	340	-	4	880	1470	NU 1060	32160	44.4	1200	1500
  	460	74	340	-	4	880	1470	NJ 1060	42160	45.1	1200	1500
  	460	118	340	-	4	1690	1340	NU 3060	3032160	72	1060	1340
  	500	160	358	-	5	2000	4000	NU3160	-	135	1000	1300
  	540	85	364	-	5	1350	1290	NU 260	32260	87.2	1000	1300
  	620	109	385	-	7.5	2010	1840	NU 360	32360	166	900	1100
  320	400	38	-	380	2.1	340	680	N1864	-	10.7	1100	1400
  	440	72	-	408	3	735	1520	N2964M	-	33.7	1200	1500
  	480	74	360	-	4	890	1520	NU 1064	32164	47	1100	1400
  	480	74	360	-	4	890	1520	NJ 1064	42164	47	1100	1400
  	480	95	360	-	4	1540	2800	NU2064	-	61	1100	1400
  340	520	57	-	470	4	995	935	N0068	7002168	45.5	950	1200
  	520	82	385	-	5	1200	2000	NU1068	32168	62.6	955	1200
  	520	106	385	-	5	1950	3730	NU2068	-	84.6	955	1200
  	530	133.5	-	476	4	1660	1810	N 668	2768	117	880	1100
  360	540	82	405	-	5	1200	2050	NU1072	32172	65.6	900	1100
  	650	170	435	-	6	3500	6050	NU 2272	32572	263	850	1000
  	750	224	465	-	7.5	5010	8740	NU 2372	32672	485	850	1000
  380	480	60	-	451	2.1	647	756	N 2876	2002876	24.6	900	1100
  	560	82	425	-	5	1250	2150	NU1076	32176	68.5	900	1100
  	680	177	451	-	6	3860	6410	NU2276	-	282	700	900
  400	540	65	438	-	4	785	988	NU 1980	1032980	42.7	950	1150
  	600	90	450	-	5	1420	2480	NU 1080	32180	88.8	900	1100
  	600	148	-	554	5	2400	4400	N3080	-	151	700	900
  	600	148	458	-	5	2150	4450	NU 3080	3032180	145	700	900
  	650	145	-	585	6	2830	3030	N 2180	2002780	190	700	900

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  420	620	90	470	-	5	-	-	NU1084	32184	-	700	900
  440	546	46	468	-	2.5	413	476	NU 688	32788	26.5	730	920
  	650	94	493	-	6	1600	2850	NU1088	32188	106	700	900
  	720	122	-	648	6	2320	2220	N 1188	1002788	191	510	620
  460	620	95	-	580	4	1340	2930	N 2992	2002992	82.4	500	630
  	620	95	504	-	4	1340	2060	NU 2992	2032992	84	500	630
  	760	240	529.3	-	7.5	5210	9690	NU3192	-	419	400	500
  500	670	100	543	-	5	2000	2410	NU 29/500	20329/500	99.5	560	710
  	720	100	556	-	6	2050	3710	NU10/500	-	137	400	500
  530	710	106	578	-	5	1770	3900	NU 29/530	20329/530	123	400	500
  560	820	115	625	-	6	2550	4700	NU10/560	-	205	380	460
  600	730	60	635	-	3	830	1950	NU18/600	-	49.2	400	500
  	800	90	-	750	5	1210	2140	N19/600	-	115	380	460
  	800	90	649	-	5	1950	2650	NU19/600	-	122	380	460
  	800	118	650	-	5	2430	5110	NUP29/600	-	173	380	460
  630	850	100	688	-	6	1850	3900	NU 19/630	10329/630	160	280	360
  	850	128	685	-	6	3050	4260	NU 29/630	20329/630	206	280	360
  670	820	69	708	-	4	1230	2830	NJ18/670	-	78.4	280	360
  700	930	160	760	-	6	3200	4580	NU 6/700	327/700	295	310	390
  710	870	74	750	-	4	1300	3000	NJ18/710	-	94.5	310	390
  	950	106	-	890	6	2300	5000	N 19/710	10023/710	205	220	300
  	950	106	775	-	6	2300	5000	NU 19/710	10329/710	207	220	300
  800	1060	115	870	-	6	2760	6150	NU 19/800	10329/800	280	200	240
  840	1040	125	-	985	3	2530	5290	N 6/840	27/840	240	200	240
  850	1120	118	925	-	6	2780	6350	NU 19/850	10329/850	320	170	220
  	1120	118	-	1059	6	3318	7156	NF19/850	-	282	170	220
  	1120	155	917	-	6	4450	10500	NU 29/850	20329/850	425	170	220

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  870	1050	90	912	-	5	2140	5280	NJ18/870	-	152	170	220
  880	950	60	898	-	2.5	775	2900	NU18/880	-	36.8	200	240
  	950	60	898	-	2.5	800	3000	NUP18/880	-	39.4	200	240
  950	1250	175	1024	-	7.5	5270	9120	NU 29/950	20329/950	563	140	170
  	1250	224	-	1170	7.5	6780	10500	N 39/950	30029/950	745	140	170
  1000	1210	92	-	1155	5	1350	2760	N18/1000	-	206	120	150
  	1220	100	1053	-	6	2376	5895	NU 18/1000	10328/1000	265	120	150
  	1220	128	1058	-	6	3200	8850	NU28/1000	-	319	120	150
  	1220	128	-	1165	6	3680	10020	NF28/1000	-	350	120	150
  	1220	128	1053	-	6	2376	5896	NUP 18/1000	10928/1000	287	120	150
  	1320	185	1082	-	7.5	6336	15570	NU 29/1000	20329/1000	700	110	140
  1060	1280	165	1120		6	3750	11300	NU38/1060	-	427	120	150
  	1280	128	-	1225	6	3222	9360	N 28/1060	20028/1060	360	110	140
  	1400	150	1162	-	7.5	4500	10000	NU 19/1060	10329/1060	683	120	150
  	1400	195	1142	-	7.5	6489	15570	NU 29/1060	20329/1060	870	120	150
  	1400	250	1146	-	7.5	8217	21600	NU 39/1060	30329/1060	1070	120	150
  	1500	325	-	1390	9.5	11700	29250	N 30/1060	30021/1060	1900	-	-
  1120	1360	106	1182	-	6	3069	7785	NJ 18/1120	10428/1120	335	-	-
  	1360	180	1180		6	5700	17300	NU38/1120	-	547	-	-
  	1580	345	1231	-	9.5	14130	35100	NU 30/1120	30321/1120	2150	-	-
  1180	1420	106	1245	-	6	3250	8500	NU18/1180	-	328	-	-
  	1420	106	1245	-	6	2727	7020	NJ 18/1180	10428/1180	350	-	-
  	1540	206	1258	-	7.5	8073	19440	NU 29/1180	20329/1180	1050	-	-
  	1540	272	-	1466	7.5	10080	26100	N 39/1180	30029/1180	1400	-	-
  1250	1750	290	-	1635	9.5	11520	27450	N 20/1250	20021/1250	2320	-	-
  	1630	170	1350		7.5	6300	15400	NU19/1250	-	952	-	-
  1320	1600	122	1395	-	6	34200	9000	NU 18/1320	10328/1320	530	-	-

  Boundary dimensions						Basic load ratings		Designations		Mass	Limiting speeds
  mm						kN		Current	Original	kg	r/min
  d	D	B	Fw	Ew	rmin	Cr	Cor				Grease	Oil
  1320	1600	122	1385	-	6	4000	9000	NJ18/1320	-	525	-	-
  	1720	230	1420	-	7.5	10260	27450	NU 29/1320	20329/1320	1500	-	-
  	1720	175	1424		7.5	7000	17100	NU19/1320	-	1100	-	-
  	1720	300	-	1640	7.5	11880	30600	N 39/1320	30029/1320	1900	-	-
  	1850	400	-	1737	12	19440	49500	N 30/1320	30021/1320	3550	-	-
  1400	1700	175	-	1637	7.5	5940	16470	N 28/1400	20028/1400	860	-	-
  1900	2300	175	-	2204	9.5	7722	22500	N 18/1900	10028/1900	1480	-	-