OEM/ODM Series NNU-Double Row Cylindrical Roller Bearings Company, Factory

Categories

Series NNU-Double Row Cylindrical Roller Bearings

NNU...W33
NNU...K/W33
NN...W33
NN...K/W33

Design Variants
Misalignment
Cage
Tolerance
Internal clearance

Double row cylindrical roller bearings are separable no-locating bearings, which make it mounting or dismounting easy, and both of the bearing rings may be mounted with heavy interference fit to shaft and housing so these bearings only have two basic type

NN type: inner ring with three integral flanges,outer ring without flange

NNU type: outer ting have three integral flanges,inner ring without flange.

These bearings are available either with or without tapered bores as standard, the suffix K means bore taper 1:12, the taper bores allow the radial internal clearance to be adjusted to the best value during mounting. These bearings also feature lubrication groove and holes on their outer rings as standard. Suffix W33.
Double row cylindrical roller bearings are not able to accommodate misalignments.
DHK double row cylindrical roller bearings are produced with roller riding solid brass cages as standard.

Double row cylindrical roller bearings are frequently used as spindle bearings, normally they are produced to special tolerance class SP.

DHK can provide these bearings with such as P5 class upon request.

Detailed tolerance values for DHK double row cylindrical roller bearings are listed in chapter of tolerance class SP, page 13.

Tolerances for DHK high precision Double row cylindrical roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Tolerance class SP of DHK high precision Double row cylindrical roller bearings

Inner Ring

PN/(Normal)

Nominal Bore diameter		Deviation	Variation	Deviation/ Variation			Ring width deviation	Ring width Variation	Radial runout	Side face runout	Side face runout
>	<=	△dmp	Vdp	△ds	Vdp	△d1mp -dmp	△Bs	vbs	kia	sd	sia
18 30		0 -6	3	+10 0	3	+4 0	0 -100	5	3	8	8
30 50		0 -8	4	+12 0	4	+6 0	0 -120	5	4	8	8
50 80		0 -9	5	+15 0	5	+8 0	0 -150	6	4	8	8
80 120		0 -10	5	+20 0	5	+8 0	0 -200	7	5	9	9
120 180		0 -13	7	+25 0	7	+10 0	0 -250	8	6	10	10
180 250		0 -15	8	+30 0	8	+12 0	0 -300	10	8	11	13
250 315		0 -18	9	+35 0	9	+12 0	0 -350	13	8	13	15
315 400		0 -23	12	+40 0	12	+14 0	0 -400	15	10	15	20
400 500		0 -27	14	+45 0	14		0 -450	17	10	17	23
500 630		0 -30		+50 0			0 -500	20	12	20	25
630 800		0 -40		+65 0			0 -750	30	15	23	30
800 1000		0 -50		+75 0			0 -1000	33	17	30	40
1000 1250		0 -65		+90 0			0 -1250	40	20	40	50

Outer ring

PN/(Normal)

Nominal outer diameter		Deviation	Variation	Radial runout	Side face runout	Side face runout
>	<=	△Dmp	VDp	Kea	SD	Sea
30 50		0 -7	4	5	8	8
50 80		0 -9	5	5	8	10
80 120		0 -10	5	6	9	11
120 150		0 -11	6	7	10	13
150 180		0 -13	7	8	10	14
180 250		0 -15	8	10	11	15
250 315		0 -18	9	11	13	18
315 400		0 -20	10	13	13	20
400 500		0 -23	12	15	15	23
500 630		0 -28	14	17	18	25
630 800		0 -35	18	20	20	30
800 1000		0 -40		25	30	40
1000 1250		0 -50		30	40	55

The width tolerances △Cs and VCs are identical to △Bs and Vbs of the inner ring of the same bearing.

Double row cylindrical roller bearings are frequently produced with reduced internal radial clearance group (C1). Must note bearing parts of these bearings could not be exchanged.

DHK can provide these bearings with other clearance group upon request.

For the detailed values please see the chapter of internal clearance of cylindrical roller bearings,page 128.

Internal Clearance Groups Of DHK Cylindrical Roller Bearings With Cylindrical Bore

Bore Dia.(mm)
>	<=	C1（um）	C2（um）	CN（um）	C3（um）	C4（um）	C5（um）
-- 24		5 15	0 25	20 45	35 60	50 75	75 100
24 30		5 15	0 25	20 45	35 60	50 75	75 100
30 40		5 15	5 30	25 50	45 70	60 85	85 110
40 50		5 18	5 35	30 60	50 80	70 100	100 130
50 65		5 20	10 40	40 70	60 90	80 100	110 140
65 80		10 25	10 45	40 75	65 100	90 125	125 160
80 100		10 30	15 50	50 85	75 110	105 140	140 175
100 120		10 30	15 55	50 90	85 125	125 165	165 205
120 140		10 35	15 60	60 105	100 145	145 190	190 235
140 160		10 35	20 70	70 120	115 165	165 215	215 265
160 180		10 40	25 75	75 125	120 170	170 220	220 270
180 200		15 45	35 90	90 145	140 195	195 250	250 305
200 225		15 50	45 105	105 165	160 220	220 280	280 340
225 250		15 50	45 110	110 175	170 235	235 300	300 365
250 280		20 55	55 125	125 195	190 260	260 330	330 400
280 315		20 60	55 130	130 205	200 275	275 350	350 425
315 355		20 65	65 145	145 225	225 305	305 385	385 465
355 400		25 75	100 190	190 280	280 270	570 460	460 550
400 450		25 85	110 210	210 310	310 410	410 510	510 610
450 500		25 95	110 220	220 330	330 440	440 550	550 660
500 560		25 100	120 240	240 360	360 480	480 600	600 720
560 630		30 110	140 260	260 380	380 500	500 620	620 740
630 710		30 130	145 285	285 425	425 565	565 705	705 845
710 800		35 140	150 310	610 470	470 630	630 790	790 950
800 900		35 160	180 350	350 520	520 690	690 860	860 1030
900 1000		35 170	200 390	390 580	580 770	770 960	960 1150
1000 1120		50 200	220 430	430 640	640 850	850 1060	1060 1270
1120 1250		50 200	230 470	470 710	710 950	950 1190	1060 1270
1250 1400		50 200	270 530	530 790	790 1050	1050 1310	1060 1270
1400 1600		50 200	330 610	610 890	890 1170	1170 1450	1060 1270
1600 1800		50 200	380 700	700 1020	1020 1340	1340 1660	1060 1270
1800 2000		50 200	400 760	760 1120	1120 1480	1480 1840	1060 1270

Internal clearance groups of DHK cylindrical roller bearings with tapered bore


Bore Dia.(mm)
>	<=	C1（um）	C2（um）	CN（um）	C3（um）	C4（um）	C5（um）
-- 24		10 20	15 40	30 55	40 65	50 75	75 100
24 30		15 25	20 45	35 60	45 70	55 80	80 105
30 40		15 25	20 45	40 65	55 80	70 95	95 120
40 50		17 30	25 55	45 75	60 90	75 105	105 135
50 65		20 35	30 60	50 80	70 100	90 120	120 150
65 80		25 40	35 70	60 95	85 120	110 145	145 180
80 100		35 55	40 75	70 105	95 130	120 155	155 190
100 120		40 60	50 90	90 130	115 155	140 180	180 220
120 140		45 70	55 100	100 145	130 175	160 205	205 250
140 160		50 75	60 110	110 160	145 195	180 230	230 280
160 180		55 85	75 125	126 175	160 210	195 245	245 295
180 200		60 90	85 140	140 195	180 235	220 275	275 330
200 225		60 95	95 155	155 215	200 260	245 305	305 365
225 250		65 100	105 170	170 235	220 285	270 335	335 400
250 280		75 110	115 185	185 255	240 310	295 365	365 435
280 315		80 120	130 205	205 280	265 340	325 400	400 475
315 355		90 135	145 250	225 304	290 370	355 435	435 515
355 400		100 150	165 255	225 345	330 420	405 495	495 585
400 450		110 170	185 285	285 385	370 470	455 555	555 655
450 500		120 190	205 315	315 425	410 520	505 615	615 725
500 560		130 210	230 350	350 470	455 575	560 680	680 800
560 630		140 230	260 380	380 500	500 620	620 740	740 860
630 710		160 260	295 435	435 575	565 705	685 835	935 975
710 800		170 290	325 485	485 645	630 790	775 935	935 1095
800 900		190 330	370 540	540 710	700 870	860 1030	1030 1200
900 1000		210 360	410 600	600 790	780 970	960 1150	1150 1340
1000 1120		230 400	455 665	665 875	865 1075	1065 1275	1275 1485
1120 1250		230 400	490 730	730 970	960 1200	1200 1440	1275 1485
1250 1400		230 400	550 810	810 1070	1070 1330	1330 1590	1275 1485
1400 1600		230 400	640 920	920 1200	1200 1480	1480 1760	1275 1485
1600 1800		230 400	700 1020	1020 1340	1340 1660	1660 1980	1275 1485
1800 2000		230 400	760 1120	1120 1480	1480 1840	1840 2200	1275 1485

Model	Dimensions				Rated load		Extreme speed		Bearing dimensions				Weight
Model	d	D	B	r1 r2 min	Dynamic load	Static load	Grease lubrication	Oil lubrication	E	F	Bs ≈	S ≈	≈
NNU 4920 M/W33	100	140	40	1.1	129	255	5300	6300	--	113	6.5	2	1.9
NNU 4920 K/M/W33	100	140	40	1.1	129	255	5300	6300	--	113	6.5	2	1.9
NNU 4120 K/M/W33	100	165	65	1.1	358	570	3600	4800	--	117	5.5	1.8	5.5
NNU 4120 M/W33	100	165	65	1.1	358	570	3600	4800	--	117	5.5	1.8	5.5
NNU 4921 M/W33	105	145	40	1.1	129	260	5300	6300	--	118	6.5	1.5	2
NNU 4921 K/M/W33	105	145	40	1.1	129	260	5300	6300	--	118	6.5	1.5	2
NNU 4121 K/M/W33	105	175	69	2	413	670	3400	4300	--	124	5.5	1.7	6.7
NNU 4121 M/W33	105	175	69	1.1	413	670	3400	4300	--	124	5.5	1.7	6.7
NNU 4922 M/W33	110	150	40	1.1	132	270	5000	6000	--	123	6.5	1.5	2.1
NNU 4922 K/M/W33	110	150	40	1.1	132	270	5000	6000	--	123	6.5	1.5	2.1
NNU 4122 K/M/W33	110	180	69	2	418	710	3200	4300	--	129	5.5	1.7	6.95
NNU 4122 M/W33	110	180	69	1.1	418	710	3200	4300	--	124	5.5	1.7	6.95
NNU 4924 M/W33	120	165	45	1.1	176	340	4500	5300	--	134.5	6.5	1.5	2.76
NNU 4924 K/M/W33	120	165	45	1.1	176	340	4500	5300	--	134.5	6.5	1.5	2.76
NNU 4124 K/M/W33	120	200	80	1.1	523	865	3000	3800	--	141	5.5	1	11
NNU 4926 M/W33	130	180	50	1.5	190	390	4000	4800	--	146	6.5	2	3.79
NNU 4926 K/M/W33	130	180	50	1.5	190	390	4000	4800	--	146	6.5	2	3.79
NNU 4126 K/M/W33	130	210	80	2	561	965	2800	3600	--	151	8.3	2.1	10.7
NNU 4126 M/W33	130	210	80	2	561	965	2800	3600	--	151	8.3	2.1	10.7
NNU 4928 M/W33	140	190	50	1.5	190	400	3800	4500	--	156	6.5	2	4.11
NNU 4928 K/M/W33	140	190	50	1.5	190	400	3800	4500	--	156	6.5	2	4.11
NNU 4128 K/M/W33	140	225	85	2.1	627	1040	2600	3400	--	161	8.3	2.4	13
NNU 4128 M/W33	140	225	85	2.1	627	1040	2600	3400	--	161	8.3	2.4	13
NNU 4930 M/W33	150	210	60	2	325	655	3600	4300	--	168.5	6.5	2.3	6.2
NNU 4930 K/M/W33	150	210	60	2	325	655	3600	4300	--	168.5	6.5	2.3	6.2
NNU 4130 K/M/W33	150	250	100	2.1	748	1290	2400	3000	--	177	8.3	4.3	18
NNU 4130 M/W33	150	250	100	2.1	748	1290	2400	3000	--	177	8.3	4.3	18
NNU 4932 M/W33	160	220	60	2	335	680	3400	4000	--	178.5	6.5	2.3	6.55
NNU 4932 K/M/W33	160	220	60	2	335	680	3400	4000	--	178.5	6.5	2.3	6.55
NNU 4132 K/M/W33	160	270	109	2.1	935	1530	2200	2800	--	188	8.3	4.1	25
NNU 4132 M/W33	160	270	109	2.1	935	1530	2200	2800	--	188	8.3	4.1	25
NNU 4934 M/W33	170	230	60	2	340	695	3200	3800	--	188.5	6.5	2.3	6.85
NNU 4934 K/M/W33	170	230	60	2	340	695	3200	3800	--	188.5	6.5	2.3	6.85
NNU 4131 K/M/W33	170	280	109	2.1	968	1630	2000	2600	--	198	8.3	4.1	26
NNU 4131 M/W33	170	280	109	2.1	968	1630	2000	2600	--	198	8.3	4.1	26
NNU 4936 M/W33	180	250	69	2	405	850	3000	3600	--	202	9.5	2.6	10.2
NNU 4936 K/M/W33	180	250	69	2	405	850	3000	3600	--	202	9.5	2.6	10.2
NNU 4136 K/M/W33	180	300	118	3	1080	1830	1900	2400	--	211	11.1	3.9	3
NNU 4136 M/W33	180	300	118	3	1080	1830	1900	2400	--	211	11.1	3.9	3
NNU 4938 M/W33	190	260	69	2	405	880	2800	3400	--	212	9.5	2.6	10.6
NNU 4938 K/M/W33	190	260	69	2	405	880	2800	3400	--	212	9.5	2.6	10.6
NNU 4138 K/M/W33	190	320	128	3	1320	2200	1800	2400	--	222	11.1	4	41
NNU 4138 M/W33	190	320	128	3	1320	2200	1800	2400	--	222	11.1	4	41
NNU 4840 M/W33	200	250	50	1.1	242	600	2400	2600	--	216	11.1	2.6	5.75
NNU 4840 K/M/W33	200	250	50	1.1	242	600	2400	2600	--	216	11.1	2.6	5.75
NNU 4940 M/W33	200	280	80	2.1	490	1040	2600	3200	--	225	12.2	3.4	14.9
NNU 4940 K/M/W33	200	280	80	2.1	490	1040	2600	3200	--	225	12.2	3.4	14.9
NNU 4140 M/W33	200	340	140	3	1470	2550	1700	2200	--	235	11.1	5.3	51
NNU 4944 M/W33	220	300	80	2.1	510	1140	2400	3000	--	245	12.2	3.4	16.2
NNU 4944 K/M/W33	220	300	80	2.1	510	1140	2400	3000	--	245	12.2	3.4	16.2
NNU 4144 K/M/W33	220	370	150	4	1650	2900	1500	2000	--	258	13.9	5.5	65
NNU 4144 M/W33	220	370	150	4	1650	2900	1500	2000	--	258	13.9	5.5	65
NNU 4848 K/M/W33	240	300	60	1.1	358	930	2200	2400	--	259	11.1	2.8	9.9
NNU 4848 M/W33	240	300	60	1.1	358	930	2200	2400	--	259	11.1	2.8	9.9
NNU 4948 M/W33	240	320	80	2.1	530	1200	2200	2800	--	265	12	3.4	17.4
NNU 4948 K/M/W33	240	320	80	2.1	530	1200	2200	2800	--	265	12	3.4	17.4
NNU 4148 K/M/W33	240	400	160	4	1980	3650	1400	1800	--	282	13.9	4.6	85
NNU 4148 M/W33	240	400	160	4	1980	3650	1400	1800	--	282	13.9	4.6	85
NNU 4952 M/W33	260	360	100	2.1	750	1700	2000	2600	--	292	15	4	60.2
NNU 4952 K/M/W33	260	360	100	2.1	750	1700	2000	2600	--	292	15	4	30.2
NNU 4052 K/M/W33	260	400	104	4	1650	3150	1500	1800	--	295	13.9	5.5	63.5
NNU 4052 M/W33	260	400	140	4	1650	3150	1500	1800	--	295	13.9	5.5	63.5
NNU 4152 K/M/W33	260	440	180	4	2200	3900	1300	1600	--	306	13.9	5.1	110
NNU 4856 K/M/W33	280	350	69	1.1	457	1200	1700	1900	--	303	13.9	3.3	15.5
NNU 4856 M/W33	280	350	69	1.1	457	1200	1700	1900	--	303	13.9	3.3	15.5
NNU 4956 M/W33	280	380	100	2.1	765	1800	1900	2400	--	312	15	4	32.2
NNU 4956 K/M/W33	280	380	100	2.1	765	1800	1900	2400	--	312	15	4	32.2
NNU 4056 K/M/W33	280	420	140		1650	3150	1400	1700		315	13.9	5.5	65.5
NNU 4056/M/W33	280	420	140		1650	3150	1400	1700		315	13.9	5.5	65.5
NNU 4056K30/M/W33	280	460	180		2550	4750	1200	1500		326	13.9	6.3	120
NNU 4156 M/W33	280	460	180		2550	4750	1200	1500		326	13.9	6.3	120
NNU 4860 K/M/W33	300	380	80	--	792	2120	--	1700	--	326	16.7	3.6	22
NNU 4860/W33	300	380	80	--	792	2120	--	1700	--	326	16.7	3.6	22
NNU 4060 K/M/W33	300	460	160	--	2010	4000	--	1500	--	340	16.7	6.5	96
NNU 4060 M/W33	300	460	160	--	2010	4000	--	1500	--	340	16.7	6.5	96
NNU 4160 K/30M/W33	300	500	200	--	2860	5300	--	1400	--	351	16.7	7.3	155
NNU 4160/M/W33	300	500	200	--	2860	5300	--	1400	--	351	16.7	7.3	155
NNU 4864 K/W33	320	400	80	--	765	2080	--	1600	--	346	16.7	3.6	23.5
NNU 4864/W33	320	400	80	--	765	2080	--	1600	--	346	16.7	3.6	23.5
NNUP4964B/HB1/W33	320	440	118	--	1020	2360	--	1600	--	--	--	--	55.5
NNU 4064/M/W33	320	480	160	--	2120	4300	--	1400	--	360	16.7	6.4	100
NNU 4064M/W33	320	480	160	--	2120	4300	--	1400	--	360	16.7	6.4	100
NNU4164F	320	540	218	--	3410	6200	--	1300	--	375	--	8.9	200
NNU4164K30/F	320	540	218	--	3410	6200	--	1300	--	375	--	8.9	200
NNU4868K/W33	340	420	80	--	644	1830	--	1500	--	366	16.7	3.6	25
NNU4868/W33	340	420	80	--	644	1830	--	1500	--	366	16.7	3.6	25
NNUP4868/W33	340	420	80	--	644	1830	--	1500	--	--	--	--	24.5
NNU4068K/M/W33	340	520	180	--	2550	5100	--	1300	--	385	16.7	7.5	140
NNU4068M/W33	340	520	180	--	2550	5100	--	1300	--	385	16.7	7.5	140
NNU4168K30/M/W33	340	580	243	--	4020	7500	--	1200	--	402	16.7	10	260
NNU4168/M/W33	340	580	243	--	4020	7500	--	1200	--	402	16.7	10	260
NNU4072K/M/W33	360	540	180	--	2810	5700	--	1200	--	405	16.7	7.4	142
NNU4072/M/W33	360	540	180	--	2810	5700	--	1200	--	405	16.7	7.4	142
NNU4172K30/M	360	600	243	--	4290	8500	--	1100	--	422	--	5.9	275
NNU4172M	360	600	243	--	4290	8500	--	1100	--	422	--	5.9	275
NNU4867K/W33	380	480	100	--	952	2550	--	1300	--	411	16.7	3.5	44
NNU4867/W33	380	480	100	--	952	2550	--	1300	--	411	16.7	3.5	44
NNU326131/HB1	380	540	130	--	2010	4300	--	1200	--	428	--	4.9	100
NNU4076K/M/W33	380	560	180	--	2860	600	--	1200	--	425	16.7	7.3	150
NNU4076M/W33	380	560	180	--	2860	600	--	1200	--	425	16.7	7.3	150
NNU4176K30/M	380	620	243	--	4290	8500	--	1100	--	442	--	7.4	285
NNU4176M	380	620	243	--	4290	8500	--	1100	--	442	--	7.4	285
NNU4880K/W33	400	500	100	--	968	2750	--	1200	--	431	16.7	3.5	46
NNU4880/W33	400	500	100	--	968	2750	--	1200	--	431	16.7	3.5	46
NNUP4880/HB1/W33	400	500	100	--	968	2750	--	1200	--	--	--	--	45.5
NNU4080F/W33	400	600	200	--	3470	7200	--	1100	--	449	16.7	7.9	205
NNU4080K/F/W33	400	600	200	--	3470	7200	--	1100	--	449	16.7	7.9	205
NNU4180K30/M/W33	400	650	250	--	4730	9500	--	1000	--	463	16.7	7.5	325
NNU4180/M/W33	400	650	250	--	4730	9500	--	1000	--	463	16.7	7.5	325
NNU4884K/W33	420	520	100	--	990	2850	--	1200	--	451	16.7	3.5	48
NNU4884/W33	420	520	100	--	990	2850	--	1200	--	451	16.7	3.5	48
NNU4084K/M/W33	420	620	200	--	3520	7500	--	950	--	469	16.7	7.8	183
NNU4084M/W33	420	620	200	--	3520	7500	--	950	--	469	16.7	7.8	183
NNU4184/316275	420	700	280	--	5500	11400	--	950	--	497	16.7	12.2	440
NNU4888K/W33	420	540	100	--	1010	2900	--	1100	--	471	16.7	3.5	50
NNU4888/W33	420	540	100	--	1010	2900	--	1100	--	471	16.7	3.5	50
NNU4088K/M/W33	420	650	212	--	3910	8300	--	950	--	487	22.3	9.6	215
NNU4088M/W33	420	650	212	--	3910	8300	--	950	--	487	22.3	9.6	215
NNU4188K30/M/W33	420	720	280	--	5720	11800	--	900	--	511	22.3	10.8	450
NNU4188M/W33	420	720	280	--	5720	11800	--	900	--	511	22.3	10.8	450
NNU4892K/W33	460	580	118	--	1190	3250	--	1100	--	497	16.7	5.2	75
NNU4892/W33	460	580	118	--	1190	3250	--	1100	--	497	16.7	5.2	75
NNU4092K/M/W33	460	680	218	--	4290	9300	--	950	--	513	22.3	7.8	240
NNU4092M/W33	460	680	218	--	4290	9300	--	950	--	513	22.3	7.8	240
NNU4192K30M	460	760	300	--	6440	12900	--	850	557	537	--	12.8	535
NNU4192M	460	760	300	--	6440	12900	--	850	--	537	--	12.8	535
NNU4096K/M/W33	480	700	218	--	4400	9650	--	900	--	533	22.3	7.8	275
NNU4096M/W33	480	700	218	--	4400	9650	--	900	--	533	22.3	7.8	275
NNU4196K30/M/W33	480	790	308	--	7040	14300	--	800	--	557	22.3	12	590
NNU4196M/W33	480	790	308	--	7040	14300	--	800	--	577	22.3	12	590
NNU40/500K/M/W33	500	720	218	--	4460	10000	--	850	--	553	22.3	7.7	287
NNU40/500M/W33	500	720	218	--	4460	10000	--	850	--	553	22.3	7.7	287
NNU41/500K30/M/W33	500	830	325	--	7480	15000	--	800	--	582	22.3	14.1	710
NNU41/500M/W33	500	830	325	--	7480	15000	--	800	--	582	22.3	14.1	710
NNU40/530K/M/W33	530	780	250	--	5500	12200	--	800	--	591	22.3	9.9	420
NNU40/530M/W33	530	780	250	--	5500	12200	--	800	--	591	22.3	9.9	420
NNU41/530K30/M/W33	530	870	335	--	7810	16000	--	750	--	618	22.3	17	790
NNU41/530M/W33	530	870	335	--	7810	16000	--	750	--	618	22.3	17	790
NNU40/560K/M/W33	560	820	258	--	5720	12900	--	750	--	626	22.3	12.8	475
NNU40/560M/W33	560	820	258	--	5720	12900	--	750	--	626	22.3	12.8	475
NNU41/560M/W33	560	920	355	--	8800	18300	--	670	--	653	22.3	16.6	930
NNU40/600K/M/W33	600	870	272	--	6820	15600	--	700	--	664	22.3	9.3	530
NNU40/600M/W33	600	870	272	--	6820	15600	--	700	--	664	22.3	9.9	530
NNU41/600K30/M/W33	600	980	375	--	9900	21200	--	630	--	699	22.3	18.5	1100
NNU41/600M/W33	600	980	375	--	9900	21200	--	630	--	699	22.3	18.5	1100
NNU40/630KM/W33	630	920	290	--	7650	17600	--	630	--	699	22.3	10.2	635
NNU40/630M/W33	630	920	290	--	7650	17600	--	630	--	699	22.3	10.2	635
NNU41/630K30/M/W33	630	1030	400	--	11000	24000	--	600	--	734	22.3	19.7	1330
NNU41/630M/W33	630	1030	400	--	11000	24000	--	600	--	734	22.3	19.7	1330
NNU40/670K/M/W33	670	980	308	--	8420	19600	--	600	--	744	22.3	11.8	765
NNU40/670M/W33	670	980	308	--	8420	19600	--	600	--	744	22.3	11.8	765
NNU41/670K30/M/W33	670	1090	412	--	12100	25500	--	530	--	774	22.3	19.5	1500
NNU41/670MM/W33	670	1090	412	--	12100	25500	--	530	--	774	22.3	19.5	1500
NNU40//710K/M/W33	710	1030	315	--	9350	21600	--	560	--	784	22.3	10.9	850
NNU40/710M/W33	710	1030	315	--	9350	21600	--	560	--	784	22.3	10.9	850
NNU41/710K30/M/W33	710	1150	438	--	13400	28500	--	500	--	820	22.3	20.5	1790
NNU41/710M/W33	710	1150	438	--	13400	28500	--	500	--	820	22.3	20.5	1790
NNU40/750K/M/W33	750	1090	335	--	10200	24000	--	500	--	830	22.3	13.5	925
NNU40/750M/W33	750	1090	335	--	10200	24000	--	500	--	830	22.3	13.5	925
NNU41/750K30/M/W33	750	1220	475	--	16100	35500	--	450	--	871	22.3	19	2230
NNU41/750M/W33	750	1220	475	--	16100	35500	--	450	--	871	22.3	19	2230
NNU40/800K/M/W33	800	1150	345	--	10800	26000	--	480	--	885	22.3	16.3	1140
NNU40/800M/W33	800	1150	345	--	10800	26000	--	480	--	885	22.3	16.3	1140
NNU41/800K30/M/W33	800	1280	475	--	16500	36500	--	430	--	921	22.3	18.6	2390
NNU41/800M/W33	800	1280	475	--	16500	36500	--	430	--	921	22.3	18.6	2390
NNU40/850K30/M/W33	850	1220	365	--	11700	28500	--	430	--	940	22.3	18.2	1340
NNU40/850M/W33	850	1220	365	--	11700	28500	--	430	--	940	22.3	18.2	1340
NNU40/850K30/M/W33	850	1360	500	--	19800	45000	--	400	--	976	22.3	22.3	2900
NNU40/850M/W33	850	1360	500	--	19800	45000	--	400	--	976	22.3	22.3	2900
NNU40/900K30/M/W33	900	1280	375	--	12800	31500	--	400	--	990	22.3	17.8	1500
NNU40/900M/W33	900	1280	375	--	12800	31500	--	400	--	990	22.3	17.8	1500
NNU41/900K30/M/W33	900	1420	515	--	22000	47500	--	360	--	1032	22.3	27.6	3180
NNU41/900M/W33	900	1420	515	--	22000	47500	--	360	--	1032	22.3	27.6	3180
NNU40/950K/M/W33	950	1360	412	--	14200	35500	--	380	--	1050	22.3	20.4	1900
NNU40/950M/W33	950	1360	412	--	14200	35500	--	380	--	1050	22.3	20.4	1900
NNU41/950K30/M/W33	950	1500	545	--	25500	5700	--	340	--	1092	22.3	23.2	3830
NNU41/950M/W33	950	1500	545	--	25500	5700	--	340	1238	1092	22.3	23.2	3830
NNU40/1000K30/M/W33	1000	1420	412	--	15400	38000	--	340	--	1101	22.3	19.8	2000
NNU40/1000M/W33	1000	1420	412	--	15400	38000	--	340	--	1101	22.3	19.8	2000
NNU41/1000K30/M/W33	1000	1580	580	--	27500	62000	--	300	--	1154	22.3	28.7	4270
NNU41/1000M/W33	1000	1580	580	--	27500	62000	--	300	--	1154	22.3	28.7	4270
NNU41/1060K30/M/W33	1060	1660	600	--	30300	69500	--	280	--	1214	22.3	26.4	5070
NNU41/1060M/W33	1060	1660	600	--	30300	69500	--	280	--	1214	22.3	26.4	5070
NNU41/1120K30/M/W33	1120	1750	630	--	33600	76500	--	280	--	1279	22.3	28.3	5600
NNU41/1120M/W33	1120	1750	630	--	33600	76500	--	280	--	1279	22.3	28.3	5600
NNU41/1180K30/M/W33	1180	1850	670	--	39600	85000	--	240	--	1350	22.3	32.4	7200
NNU41/1180M/W33	1180	1850	670	--	36900	85000	--	240	--	1350	22.3	32.4	7200
NNU41/1250K30/M/W33	1250	1950	710	--	41800	98000	--	220	--	1426	22.3	31.7	8000
NNU41/1250M/W33	1250	1950	710	--	41800	98000	--	220	--	1426	22.3	31.7	8000
NNU41/1320K30/M/W33	1320	2060	750	--	45700	106000	--	190	--	1507	22.3	36.4	9400
NNU41/1320M/W33	1320	2060	750	--	45700	106000	--	190	--	1507	22.3	36.4	9400
NNU41/1400K30/M/W33	1400	2180	775	--	49500	116000	--	170	--	1598	22.3	37.7	10700
NNU41/1400M/W33	1400	2180	775	--	49500	116000	--	170	--	1598	22.3	37.7	10700
NNU41/1500K30/M/W33	1500	2300	800	--	52800	132000	--	150	--	1709	22.3	39.4	12300
NNU41/1500M/W33	1500	2300	800	--	52800	132000	--	150	--	1709	22.3	39.4	12300

Ningbo DHK Precision Bearing Co., Ltd.

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DHK has passed IATF16949 quality system certification and ISO14001 environmental management system certification；and DHK is a national high-tech enterprise.

What are the potential consequences of using improper or damaged rolling mill bearings in terms of safety and performance?

2024-05-07 Industry News

Using improper or damaged rolling mill bearings can have significant consequences in terms of safety and performance: Increased risk of machinery failure: The ramifications of be...

How do environmental factors, such as temperature and humidity, affect the performance of rolling mill bearings?

2024-05-01 Industry News

Environmental factors like temperature and humidity can significantly impact the performance of rolling mill bearings in several ways:Temperature Effects on Lubrication: Temperatur...

Are there any specific alignment requirements for screw compressor bearings to optimize performance and reduce wear?

2024-04-22 Industry News

Alignment of screw compressor bearings is critical for optimizing performance and minimizing wear. Here are some specific alignment requirements:Parallel Alignment: Achieving preci...

What are the best practices for installing and mounting bearings in engineering machinery to ensure proper functionality?

2024-04-15 Industry News

Installing and mounting bearings correctly is crucial for ensuring the proper functionality and longevity of engineering machinery. Here are some best practices:Cleanliness: Thorou...

What are the potential risks associated with over-lubrication or under-lubrication of motor bearings?

2024-04-08 Industry News

Both over-lubrication and under-lubrication of motor bearings can lead to detrimental effects on their performance and lifespan. Here are the potential risks associated with each:O...

How do factors such as load capacity and rotational speed requirements influence the selection of bearings for different agricultural applications?

2024-04-01 Industry News

Factors such as load capacity and rotational speed requirements are crucial considerations when selecting bearings for agricultural applications because they directly affect the pe...

Industry Knowledge Expansion

1. Enhanced Radial Load Capacity

Series NNU double row cylindrical roller bearings are engineered to excel in environments where high radial loads are prevalent. The unique design of these bearings, featuring two rows of cylindrical rollers separated by a central rib on the inner ring, facilitates superior radial load-carrying capacity. This design minimizes stress concentrations by distributing the load evenly across the width of the bearing, reducing the risk of premature wear and extending the operational lifespan. In heavy-duty applications such as mining equipment, construction machinery, and steel processing plants, Series NNU bearings play a critical role in supporting rotating components subjected to significant radial forces. Whether it's the heavy loads encountered in conveyor systems or the continuous operation of large industrial fans and rollers, Series NNU bearings provide the reliability and durability needed to keep operations running smoothly. The robust construction of Series NNU bearings enhances their ability to withstand shock and vibration, common challenges in industrial settings. By effectively managing radial loads, these bearings contribute to the overall stability and efficiency of machinery, reducing downtime and maintenance costs.

2. Application Versatility of Series NNU double row cylindrical roller bearings

Series NNU double row cylindrical roller bearings offer unparalleled versatility, making them indispensable across a wide spectrum of industrial applications. From precision machine tools to heavy-duty gearboxes, Series NNU bearings find their place in diverse environments where performance, reliability, and longevity are paramount. In machine tool applications, where precision and accuracy are critical, Series NNU bearings provide the rigidity and smooth operation necessary for achieving high-quality machining results. Their ability to accommodate both radial and axial loads ensures optimal performance even under dynamic operating conditions. Similarly, in gearbox assemblies where torque transmission and motion control are essential, Series NNU bearings contribute to smooth power transmission and operational efficiency. Their compact design allows for seamless integration within gearbox housings, maximizing space utilization without compromising performance. Series NNU bearings are well-suited for rotating machinery such as pumps, compressors, and turbines, where continuous operation is essential for maintaining productivity. Whether it's the demanding requirements of oil and gas exploration or the precision demanded in aerospace applications, Series NNU bearings deliver the performance and reliability needed to meet the challenges of modern industrial environments.

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+86-574-86597612
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ken@dhk-intl.com
Phone
+86-13957821917
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+86-574-86597652

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Series NNU-Double Row Cylindrical Roller Bearings

Ningbo DHK Precision Bearing Co., Ltd.

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Latest News

What are the potential consequences of using improper or damaged rolling mill bearings in terms of safety and performance?

How do environmental factors, such as temperature and humidity, affect the performance of rolling mill bearings?

Are there any specific alignment requirements for screw compressor bearings to optimize performance and reduce wear?

What are the best practices for installing and mounting bearings in engineering machinery to ensure proper functionality?

What are the potential risks associated with over-lubrication or under-lubrication of motor bearings?

How do factors such as load capacity and rotational speed requirements influence the selection of bearings for different agricultural applications?

Industry Knowledge Expansion

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Series NNU-Double Row Cylindrical Roller Bearings OEM/ODM

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How Can We Help You?

Series NNU-Double Row Cylindrical Roller Bearings

Ningbo DHK Precision Bearing Co., Ltd.

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0+

Click to view our factory

CERTIFICATE

Latest News

What are the potential consequences of using improper or damaged rolling mill bearings in terms of safety and performance?

How do environmental factors, such as temperature and humidity, affect the performance of rolling mill bearings?

Are there any specific alignment requirements for screw compressor bearings to optimize performance and reduce wear?

What are the best practices for installing and mounting bearings in engineering machinery to ensure proper functionality?

What are the potential risks associated with over-lubrication or under-lubrication of motor bearings?

How do factors such as load capacity and rotational speed requirements influence the selection of bearings for different agricultural applications?

Industry Knowledge Expansion

CONTACT US

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Email

Phone

Fax

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