Description

Technical Parameters

Double row Cylindrical Roller Bearing

There are two kinds of structures of double row cylindrical roller bearings: cylindrical inner hole and conical inner hole. This kind of bearing has the advantages of compact structure, high rigidity, large load capacity and small deformation after loading, etc. It is especially suitable for machine tool spindle support. It can be divided into two types: NN series and NNU series. NN series cylindrical roller bearing has double flange on the inner ring, but no flange on the outer ring. NNU type bearing has double flange on the outer ring but with no flange on the inner ring. Both bearings do not limit the relative axial displacement between the shaft and the housing and can be used as non-positioning bearings.

图片14.jpg

Dimensions				Rating Loads		Bearing Code		Weight
mm				kN		Bearing Code		Weight
d	D	B	r_min	Cr	Cor	Current	former	Kg
200	280	60	2.1	420	815	NN 3940	3282940	10.6
	280	80	2.1	484	960	NN 4940K/W20	4182940Y	14.1
	280	80	2.1	570	1220	NN 4940	4282940	15.3
	280	80	2.1	570	1220	NNU 4940	4482940	15.3
	310	82	2.1	655	1170	NN 3040	3282140	22.7
	310	82	2.1	655	1170	NNU 3040	3482140	22.7
	310	109	2.1	890	1730	NN 4040	4282140	30.4
220	300	60	2.1	440	895	NN 3944	3282944	11.4
	300	80	2.1	600	1330	NN 4944	4282944	16.6
	300	80	2.1	600	1330	NNU 4944	4482944	16.6
	340	90	3	815	1480	NN 3044	3282144	29.6
	340	90	3	815	1480	NNU 3044	3482144	30
	340	118	3	1190	2400	NN 4044	4282144	39.8
	370	120	4	1050	1810	NN 3144	3282744	51.9
	370	120	4	1050	1810	NNU 3144	3482744	52.3
240	300	60	1.1	405	1030	NN 4848	4282848	9.77
	300	60	1.1	358	930	NNU4848	-	9.9
	320	60	2.1	460	975	NN 3948	3282948	12.2
	320	80	2.1	625	1450	NN 4948	4282948	17.9
	320	80	2.1	625	1450	NNU 4948	4482948	18
	360	92	3	855	1600	NN 3048	3282148	32.7
	360	92	3	855	1600	NNU 3048	3482148	32.7
	360	118	3	1240	2600	NN 4048	4282148	39.3
	360	118	3	1240	2600	NNU 4048	4482148	42.7
	400	128	4	1170	2040	NN 3148	3282748	64.2
	400	160	4	1880	3530	NNU 4148	4482748	85
260	360	75	2.1	670	1380	NN 3952	3282952	21.4
	360	100	2.1	711	1540	NN 4952K	4182952	29.2
	360	100	2.1	935	2100	NN 4952	4282952	28.3
	360	100	2.1	935	2100	NNU 4952	4482952	31.1
260	400	104	4	969	1810	NN 3052K	3182152	47.1
	400	104	4	969	1810	NN 3052	3282152	48.5
	400	140	4	1550	3250	NN 4052	4282152	59.7
	400	140	4	1550	3250	NNU 4052	4482152	65
	440	144	4	1480	2660	NN 3152	3282752	89.1
	440	180	4	2200	4000	NNU4152	4482752	113
280	350	69	1.1	445	1160	NN 4856	4282856	15.3
	350	69	2	457	1200	NNU4856K	-	15.5
	380	75	2.1	695	1460	NN 3956	3282956	22.7
	380	100	2.1	960	2230	NN 4956	4284956	32.9
	380	100	2.1	960	2230	NNU 4956	4482956	33
	420	106	4	1020	1950	NN 3056K	3182156	49.1
	420	106	4	1020	1950	NN 3056	3282156	49.9
	420	106	4	1080	2080	NNU3056	-	51.4
	460	146	5	1520	2790	NN 3156	3282756	95.7
300	380	80	2.1	690	1760	NNU 4860	4482860	21.7
	420	118	3	1230	2870	NN 4960	4282960	51.6
	420	118	3	1230	2870	NNU 4960	4482960	51.9
	460	118	4	1180	2250	NN 3060	3282160	71.7
	460	118	4	1180	2250	NN 3060K	3182160	69.6
	460	160	4	1920	4100	NN4060	-	97.6
	500	160	5	1760	3150	NN 3160	3282760	125
	500	160	5	1760	3150	NNU 3160	3482760	126
320	400	80	2.1	700	1840	NNU 4864	4482864	22.8
	440	118	3	1260	3050	NN 4964	4282964	50.2
	440	118	3	1260	3050	NN 4964K	4182964	52
	440	118	3	1260	3050	NNU 4964	4482964	54.9
	480	121	4	1350	2670	NN 3064	3282164	76.6
	480	121	4	1350	2670	NNU 3064	3482164	76.9
	480	160	4	1960	4300	NNU 4064	4482164	103
320	540	176	5	2090	3750	NNU 3164	3482764	154
340	460	90	3	905	2020	NN 3968	3282968	42.9
	460	118	3	1040	2450	NN 4968K	4182968	53.8
	460	118	3	1350	3400	NN 4968	4282968	52.1
	460	118	3	1350	3400	NNU 4968	4482968	57.8
	520	133	5	1560	3020	NN 3068K	3182168	101
	520	133	5	1560	3020	NN 3068	3282168	104
	520	133	5	1560	3020	NNU3068	3482168	104
	520	180	5	2420	5350	NNU 4068	4482168	141
360	480	90	3	930	2130	NN 3972	3282972	44.9
	480	118	3	1390	3550	NNU 4972	4482972	60.6
	540	134	5	1630	3240	NN 3072	3282172	106
	540	134	5	1630	3240	NN 3072K	3182172	106
	540	134	5	1630	3240	NNU 3072	3482172	108
	540	180	5	2530	5450	NN 4072	3282172	132
420	620	150	5	2130	4450	NN 3084	3282184	154
	620	150	5	2130	4450	NNU 3084	3482184	155
	620	200	5	3150	7100	NN 4084	4282184	189
	620	200	5	3400	7850	NNU 4084	4482184	209
	700	224	6	3550	6800	NNU 3184	3482784	347
440	540	100	2.1	950	2790	NNU 4888	4482888	49.5
	650	157	6	2360	4900	NN 3088	3282188	177
	650	157	6	2360	4900	NNU 3088	3482188	178
	720	226	6	3500	6800	NN 3188	3282788	357
460	580	118	3	1200	3600	NNU4892	4482892	76
	620	118	4	1610	3700	NN 3992	3282992	94.5
	620	160	4	2400	6200	NNU 4992	4482992	140
	680	163	6	2470	5070	NN 3092K	3182192	204
	680	163	6	2470	5070	NN 3092	3282192	204
480	650	170	5	2690	7000	NN 4996	4282996	164
480	700	165	6	2600	5550	NN 3096	3282196	211
	700	218	6	4300	8600	NNU4096	4482196	273
	790	248	7.5	4050	8100	NN 3196	3282796	447
500	670	170	5	2720	7200	NNU 49/500	44829/500	171
	720	167	6	2580	5600	NN 30/500	32821/500	205
	720	167	6	2580	5600	NNU 30/500	34821/500	220
530	710	136	5	2040	4900	NN 39/530	32829/530	149
	710	180	5	2900	7050	NNU 49/530	44829/530	202
	780	185	6	3200	6900	NN 30/530	32821/530	296
560	750	140	5	2370	4860	NN 39/560	32829/530	188
	750	190	5	3250	8700	NNU 49/560	44829/560	239
	780	180	8	2400	6400	NN 6/560	2872/560	266
	820	195	8	2460	6560	NN 30/560K	31821/560	341
	820	258	6	4100	10600	NN 40/560	42821/560	472
	820	258	6	5720	13100	NNU 40/560	44821/560	420
560	920	280	7.5	6850	13700	NNU 31/560	34827/560	738
600	800	200	5	3850	10500	NNU 49/600	44829/600	284
	800	200	5	3450	7180	NN 49/600K	41829/600	257
	870	200	6	3420	7785	NN 30/600	32821/600	355
	870	272	6	6138	14040	NNU 40/600	44821/600	530
	980	375	7.5	8910	18990	NNU 41/600	44827/600	1100
630	780	150	4	2290	7000	NNU 48/630	44828/630	160
	850	218	6	4200	11400	NN 49/630	42829/630	328
	850	218	6	4000	10800	NNU 49/630	44829/630	356
	920	212	7.5	3860	8820	NN 30/630	32821/630	430
	920	290	7.5	6885	15750	NNU 40/630	44821/630	635
	1030	400	7.5	9900	21600	NNU 41/630	44827/630	1330
670	900	230	6	4450	12330	NN 49/670	42829/670	419
	900	230	6	4950	13100	NNU 49/670	44829/670	430
	980	230	7.5	4620	10260	NN 30/670K	31821/670	597
670	980	308	7.5	7578	17640	NNU 40/670	44821/670	765
	1090	412	7.5	10890	22950	NNU 41/670	44827/670	1500
710	870	160	4	2640	8350	NNU 48/710	44828/710	203
	950	243	6	4850	13770	NNU49/710	44829/710	480
	1030	236	7.5	5148	11880	NN 30/710	32821/710	590
	1030	315	7.5	8415	19440	NNU 40/710	44821/710	850
	1150	438	9.5	12060	25650	NNU 41/710	44827/710	1790
750	920	170	5	3070	9180	NN 48/750	42828/750	240
	1000	250	6	4950	14400	NNU 49/750	44829/750	540
	1090	250	7.5	6336	14400	NN 30/750	32821/750	705
	1090	335	7.5	9180	21600	NNU 40/750	44821/750	925
	1220	475	9.5	14490	31950	NNU 41/750	44827/750	2230
800	1060	258	6	5247	15300	NNU 49/800	44829/800	615
	1150	258	7.5	7029	16200	NN 30/800	32821/800	790
	1150	345	7.5	9720	23400	NNU 40/800	44821/800	1140
800	1280	475	9.5	14850	32850	NNU 41/800	44827/800	2390
850	1030	180	5	3400	11400	NNU48/850	44828/850	310
	1120	272	6	5346	16200	NNU 49/850	44829/850	715
	1220	272	7.5	7128	16740	NN 30/850	32821/850	940
	1220	365	7.5	10530	25650	NNU 40/850	44821/850	1340
	1360	500	6	19080	40500	NNU 41/850	44827/850	2900
900	1180	280	6	5940	18000	NNU 49/900	44829/900	805
	1280	280	7.5	7425	18000	NN 30/900	32821/900	1050
	1280	375	7.5	11520	28350	NNU 40/900	44821/900	1500
	1420	515	6	19800	42750	NNU 41/900	44827/900	3180
950	1250	300	7.5	6633	20160	NNU 49/950	44829/950	960
	1360	300	7.5	8217	20160	NN 30/950	32821/950	1300
	1360	412	7.5	12780	31950	NNU 40/950	44821/950	1900
950	1500	545	6	22950	51300	NNU 41/950	44827/950	3830
1000	1320	315	7.5	7722	23400	NNU 49/1000	44829/1000	1250
1000	1320	315	7.5	8580	25200	NN49/1000	42829/1000	1200
	1420	308	7.5	9090	22050	NN 30/1000	32821/1000	1400
	1420	412	7.5	13860	34200	NNU 40/1000	44821/1000	2000
	1580	580	6	24750	55800	NNU 41/1000	44827/1000	4270
1060	1400	335	7.5	9450	27450	NNU 49/1060	44829/1060	1350
	1500	325	9.5	9900	24750	NN 30/1060	32821/1060	1650
	1660	600	7.5	27270	62550	NNU 41/1060	44827/1060	5070
1120	1460	335	7.5	9450	28350	NNU 49/1120	44829/1120	1450
	1750	630	7.5	30240	68850	NNU 41/1120	44827/1120	5600
1180	1540	355	7.5	10710	32400	NNU 49/1180	44829/1180	1650
	1850	670	7.5	33210	76500	NNU 41/1180	44827/1180	7200
1250	1950	710	7.5	37620	88200	NNU 41/1250	44827/1250	8000
1320	1720	400	7.5	12420	38250	NNU 49/1320	44829/1320	3100
	1720	400	7.5	13800	42500	NN49/1320	42829/1320	3060
	2060	750	7.5	41130	95400	NNU 41/1320	44827/1320	9400
1400	2180	775	9.5	44550	104400	NNU 41/1400	44827/1400	10700
1500	2300	800	9.5	47520	118800	NNU 41/1500	44827/1500	12300

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