Double Row Cylindrical Roller Bearings

PMK Double Row Cylindrical Roller Bearings are engineered for high radial load capacity and stiffness in compact installations. The two rows of rollers distribute loads evenly, ensuring long life and high rigidity even under shock or vibration.

These bearings offer high accuracy and reliability for medium- and heavy-duty equipment where precise radial guidance is required.

Key benefits

Extremely high radial load capacity with dual roller rows.
Increased rigidity and reduced deflection under load.
Suitable for high-speed and heavy-duty applications.
Long life through optimized roller–raceway contact design.
Configurations available for limited axial movement.

Applications

Steel mills and heavy industrial equipment.
Large gearboxes and rolling machines.
Machine tools and heavy motor drives.
Mining and material handling systems.

Request Quote (RFQ)

Specifications

Boundary dimensions (mm)						Basic load ratings (kN)		Mass (kg)	Designations
d	D	B	r_min	Fw	Ew	Cr	Cor	Mass (kg)	Current	Original
200	280	60	2.1	-	259	420	815	10.6	NN3940	3282940
	280	80	2.1	-	259	484	960	14.1	NN4940K/W20	4182940Y
	280	80	2.1	-	259	570	1220	15.3	NN4940	4282940
	280	80	2.1	225	-	570	1220	15.3	NNU4940	4482940
	310	82	2.1	-	282	655	1170	22.7	NN3040	3282140
	310	82	2.1	232	-	655	1170	22.7	NNU3040	3482140
	310	109	2.1	-	282	890	1730	30.4	NN4040	4282140
220	300	60	2.1	-	279	440	895	11.4	NN3944	3282944
	300	80	2.1	-	279	600	1330	16.6	NN4944	4282944
	300	80	2.1	245	-	600	1330	16.6	NNU4944	4482944
	340	90	3	-	310	815	1480	29.6	NN3044	3282144
	340	90	3	254	-	815	1480	30	NNU3044	3482144
	340	118	3	-	310	1190	2400	39.8	NN4044	4282144
	370	120	4	-	331	1050	1810	51.9	NN3144	3282744
	370	120	4	263	-	1050	1810	52.3	NNU3144	3482744
240	300	60	1.1	-	283	405	1030	9.77	NN4848	4282848
	300	60	1.1	259	-	358	930	9.9	NNU4848	-
	320	60	2.1	-	300	460	975	12.2	NN3948	3282948
	320	80	2.1	-	300	625	1450	17.9	NN4948	4282948
	320	80	2.1	263	-	625	1450	18	NNU4948	4482948
	360	92	3	-	330	855	1600	32.7	NN3048	3282148
	360	92	3	274	-	855	1600	32.7	NNU3048	3482148
	360	118	3	-	330	1240	2600	39.3	NN4048	4282148
	360	118	3	274	-	1240	2600	42.7	NNU4048	4482148
	400	128	4	-	358	1170	2040	64.2	NN3148	3282748
	400	160	4	282	-	1880	3530	85	NNU4148	4482748
260	360	75	2.1	-	335	670	1380	21.4	NN3952	3282952
	360	100	2.1	-	335	711	1540	29.2	NN4952K	4182952
	360	100	2.1	-	335	935	2100	28.3	NN4952	4282952
	360	100	2.1	292	-	935	2100	31.1	NNU4952	4482952
	400	104	4	-	364	969	1810	47.1	NN3052K	3182152
	400	104	4	-	364	969	1810	48.5	NN3052	3282152
	400	140	4	-	364	1550	3250	59.7	NN4052	4282152
	400	140	4	300	-	1550	3250	65	NNU4052	4482152
	440	144	4	-	393	1480	2660	89.1	NN3152	3282752
	440	180	4	306	-	2200	4000	113	NNU4152	4482752
280	350	69	1.1	-	329	445	1160	15.3	NN4856	4282856
	350	69	2	303	-	457	1200	15.5	NNU4856K	-
	380	75	2.1	-	355	695	1460	22.7	NN3956	3282956
	380	100	2.1	-	355	960	2230	32.9	NN4956	4284956
	380	100	2.1	312	-	960	2230	33	NNU4956	4482956
	420	106	4	-	384	1020	1950	49.1	NN3056K	3182156
	420	106	4	-	384	1020	1950	49.9	NN3056	3282156
	420	106	4	320	-	1080	2080	51.4	NNU3056	-
	460	146	5	-	413	1520	2790	95.7	NN3156	3282756
300	380	80	2.1	324	-	690	1760	21.7	NNU4860	4482860
	420	118	3	-	388	1230	2870	51.6	NN4960	4282960
	420	118	3	339	-	1230	2870	51.9	NNU4960	4482960
	460	118	4	-	418	1180	2250	71.7	NN3060	3282160
	460	118	4	-	418	1180	2250	69.6	NN3060K	3182160
	460	160	4	-	418	1920	4100	97.6	NN4060	-
	500	160	5	-	448	1760	3150	125	NN3160	3282760
	500	160	5	358	-	1760	3150	126	NNU3160	3482760
320	400	80	2.1	346	-	700	1840	22.8	NNU4864	4482864
	440	118	3	-	408	1260	3050	50.2	NN4964	4282964
	440	118	3	-	408	1260	3050	52	NN4964K	4182964
	440	118	3	359	-	1260	3050	54.9	NNU4964	4482964
	480	121	4	-	438	1350	2670	76.6	NN3064	3282164
	480	121	4	366	-	1350	2670	76.9	NNU3064	3482164
	480	160	4	367	-	1960	4300	103	NNU4064	4482164
	540	176	5	384	-	2090	3750	154	NNU3164	3482764
340	460	90	3	-	428	905	2020	42.9	NN3968	3282968
	460	118	3	-	428	1040	2450	53.8	NN4968K	4182968
	460	118	3	-	428	1350	3400	52.1	NN4968	4282968
	460	118	3	379	-	1350	3400	57.8	NNU4968	4482968
	520	133	5	-	473	1560	3020	101	NN3068K	3182168
	520	133	5	-	473	1560	3020	104	NN3068	3282168
	520	133	5	387	-	1560	3020	104	NNU3068	3482168
	520	180	5	385	-	2420	5350	141	NNU4068	4482168
360	480	90	3	-	448	930	2130	44.9	NN3972	3282972
	480	118	3	399	-	1390	3550	60.6	NNU4972	4482972
	540	134	5	-	493	1630	3240	106	NN3072	3282172
	540	134	5	-	493	1630	3240	106	NN3072K	3182172
	540	134	5	413	-	1630	3240	108	NNU3072	3482172
	540	180	5	-	496	2530	5450	132	NN4072	3282172
	600	243	5	422	-	4000	8000	282	NNU4172	4482772
380	520	140	4	-	485	1880	4600	81.3	NN4976	4282976
	520	140	4	426	-	1880	4600	88.8	NNU4976	4482976
	560	135	5	-	513	1590	3240	110	NN3076K	3182176
	560	135	5	-	513	1590	3240	114	NN3076	3282176
	620	194	5	-	559	2620	4950	224	NN3176	3282776
	620	194	5	449	-	2620	4950	228	NNU3176	3482776
400	500	100	2.1	430	-	905	2540	45.7	NNU4880	4482880
	540	106	4	-	504	1240	2400	71.3	NN3980K	318980
	600	148	5	-	549	1980	3660	143	NN3080K	3182180
	600	148	5	-	549	1980	3660	147	NN3080	3282180
	650	200	6	474	-	2770	5400	262	NNU3180	3482780
420	560	106	4	-	522	1280	2900	71.2	NN3984	3282984
	560	140	4	-	525	2000	5150	87.9	NN4984	4282984
	560	140	4	466	-	2000	5015	97.2	NNU4984	4482184
	620	150	5	-	568	2130	4450	154	NN3084	3282184
	620	150	5	478	-	2130	4450	155	NNU3084	3482184
	620	200	5	-	571	3150	7100	189	NN4084	4282184
	620	200	5	469	-	3400	7850	209	NNU4084	4482184
	700	224	6	501	-	3550	6800	347	NNU3184	3482784
440	540	100	2.1	470	-	950	2790	49.5	NNU4888	4482888
	650	157	6	-	596	2360	4900	177	NN3088	3282188
	650	157	6	500	-	2360	4900	178	NNU3088	3482188
	720	226	6	-	649	3500	6800	357	NN3188	3282788
460	580	118	3	497	-	1200	3600	76	NNU4892	4482892
	620	118	4	-	578	1610	3700	94.5	NN3992	3282992
	620	160	4	510	-	2400	6200	140	NNU4992	4482992
	680	163	6	-	624	2470	5070	204	NN3092K	3182192
	680	163	6	-	624	2470	5070	204	NN3092	3282192
480	600	118	3	514	-	1220	3750	80	NNU4896	4482896
	650	170	5	-	601	2750	6700	160	NN4996	4282996
	700	165	6	-	642	2550	5400	211	NN3096K	3182196
	700	165	6	-	642	2550	5400	214	NN3096	3282196
	700	165	6	540	-	2550	5400	220	NNU3096	3482196
	790	248	7.5	-	707	4300	8350	502	NN3196	3282796
500	620	118	3	531	-	1240	3950	82.5	NNU48/500	44828/500
	670	170	5	-	623	2830	7100	171	NN49/500	42829/500
	720	167	6	-	662	2650	5600	220	NN30/500	32821/500
	720	167	6	-	662	2650	5600	220	NN30/500K	31821/500
	720	167	6	560	-	2650	5600	228	NNU30/500	34821/500
	830	264	7.5	-	741	4550	9000	588	NN31/500	32827/500
530	650	118	3	560	-	1240	4050	87.5	NNU48/530	44828/530
	710	180	5	-	660	3060	7850	201	NN49/530	42829/530
	780	185	6	-	714	3150	6700	286	NN30/530	32821/530
	780	185	6	597	-	3150	6700	291	NNU30/530	34821/530
	780	250	6	-	714	4250	10200	390	NN40/530	-
	870	272	7.5	-	778	5100	10400	660	NN31/530	32827/530
	870	272	7.5	621	-	5100	10400	705	NNU31/530	34827/530
560	680	118	3	591	-	1300	4350	92.5	NNU48/560	44828/560
	750	190	5	-	699	3350	8800	238	NN49/560	42829/560
	820	195	6	-	752	3550	7850	338	NN30/560	32821/560
	820	195	6	-	752	3550	7850	330	NN30/560K	31821/560
	820	195	6	629	-	3550	7850	340	NNU30/560	34821/560
	920	280	7.5	-	824	5700	11800	770	NN31/560	32827/560
	920	280	7.5	659	-	5700	11800	815	NNU31/560	34827/560
600	730	130	4	635	-	1650	5650	133	NNU48/600	44828/600
	800	200	5	-	747	3800	10200	280	NN49/600	42829/600
	870	200	6	-	796	3900	8800	405	NN30/600	32821/600
	870	200	6	672	-	3900	8800	408	NNU30/600	34821/600
	870	272	6	-	796	4650	12000	550	NN40/600	42821/600
	980	300	7.5	-	879	6700	14300	945	NN31/600	32827/600
	980	300	7.5	703	-	6700	14300	1010	NNU31/600	34827/600
630	780	150	4	670	-	2120	7350	180	NNU48/630	44828/630
	850	220	6	-	790	4400	12000	361	NN49/630	42829/630
	920	212	6	-	843	4350	10000	475	NN30/630	32821/630
	920	212	6	708	-	4350	10000	484	NNU30/630	34821/630
670	820	150	4	-	781	2280	8150	195	NN48/670	42828/670
	820	150	4	710	-	2280	8150	200	NNU48/670	44828/670
	900	230	6	-	838	5000	14000	426	NN49/670	42829/670
	900	230	6	732	-	5000	14000	426	NNU49/670	44829/670
	980	230	7.5	-	898	5000	11800	590	NN30/670	32821/670
	980	230	7.5	753	-	5000	11800	595	NNU30/670	34821/670
710	870	160	4	753	-	2650	9650	235	NNU48/710	44828/710
	950	240	6	-	885	5400	15600	495	NN49/710	42829/710
	950	240	6	775	-	5400	15600	500	NNU49/710	44829/710
	1030	236	7.5	-	945	5400	12800	650	NN30/710	32821/710
	1030	236	7.5	798	-	5400	12800	660	NNU30/710	34821/710
750	1090	250	7.5	-	1007	6336	14400	705	NN30/750	32821/750
	1090	335	7.5	830	-	9180	21600	925	NNU40/750	44821/750
	1220	475	9.5	871	-	14490	31950	2230	NNU41/750	44827/750
800	1060	258	6	884	-	5247	15300	615	NNU49/800	44829/800
	1150	258	7.5	-	1065	7029	16200	790	NN30/800	32821/800
	1150	345	7.5	885	-	9720	23400	1140	NNU40/800	44821/800
	1280	475	9.5	921	-	14850	32850	2390	NNU41/800	44827/800
850	1030	180	5	905	-	3400	11400	310	NNU48/850	44828/850
	1120	272	6	939	-	5346	16200	715	NNU49/850	44829/850
	1220	272	7.5	-	1130	7128	16740	940	NN30/850	32821/850
	1220	365	7.5	940	-	10530	25650	1340	NNU40/850	44821/850
	1360	500	12	976	-	19080	40500	2900	NNU41/850	44827/850
900	1180	280	6	986	-	5940	18000	805	NNU49/900	44829/900
	1280	280	7.5	-	1185	7425	18000	1050	NN30/900	32821/900
	1280	375	7.5	990	-	11520	28350	1500	NNU40/900	44821/900
	1420	515	6	1032	-	19800	42750	3180	NNU41/900	44827/900
950	1250	300	7.5	1046	-	6633	20160	960	NNU49/950	44829/950
	1360	300	7.5	-	1255	8217	20160	1300	NN30/950	32821/950
	1360	412	7.5	1050	-	12780	31950	1900	NNU40/950	44821/950
	1500	545	12	1092	-	22950	51300	3830	NNU41/950	44827/950
1000	1320	315	7.5	1103	-	7722	23400	1250	NNU49/1000	44829/1000
	1320	315	7.5	-	1238	8580	25200	1200	NN49/1000	42829/1000
	1420	308	7.5	-	1316	9090	22050	1400	NN30/1000	32821/1000
	1420	412	7.5	1101	-	13860	34200	2000	NNU40/1000	44821/1000
	1580	580	12	1154	-	24750	55800	4270	NNU41/1000	44827/1000
1060	1400	335	7.5	1160	-	9450	27450	1350	NNU49/1060	44829/1060
	1500	325	9.5	-	1391	9900	24750	1650	NN30/1060	32821/1060
	1660	600	15	1214	-	27270	62550	5070	NNU41/1060	44827/1060
1120	1460	335	7.5	1220	-	9450	28350	1450	NNU49/1120	44829/1120
1120	1750	630	15	1279	-	30240	68850	5600	NNU41/1120	44827/1120
1180	1540	355	7.5	1285	-	10710	32400	1650	NNU49/1180	44829/1180
1180	1850	670	15	1350	-	33210	76500	7200	NNU41/1180	44827/1180
1250	1950	710	15	1426	-	37620	88200	8000	NNU41/1250	44827/1250
1320	1720	400	7.5	1440	-	12420	38250	3100	NNU49/1320	44829/1320
	1720	400	7.5	-	1620	13800	42500	3060	NN49/1320	42829/1320
	2060	750	15	1507	-	41130	95400	9400	NNU41/1320	44827/1320
1400	2180	775	19	1598	-	44550	104400	10700	NNU41/1400	44827/1400
1500	2300	800	19	1709	-	47520	118800	12300	NNU41/1500	44827/1500