Cylindrical roller and raceway for line contact bearings.Large load capacity, mainly bear radial load.Small friction between rolling body and ring, suitable for high-speed rotation.According to whether the ring has retaining edge or not, there are single row cylindrical roller bearings such as NU, NJ, NUP, N and NF, and double row cylindrical roller bearings such as NNU and NN.The bearing is a separable structure with inner ring and outer ring.

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Parameters

Bearing No.	Principal dimensions			Basic load ratings		Fatigue	Speed ratings		Mass
				dynamic	static	oad limit	Reference speed	Limiting speed
				dynamic	static	oad limit
	d	D	B	C	C0	Pu
	mm			KN		KN	r/min		kg
NU 303	17	47	14	24,6	20,4	2,55	15000	20000	0.120
NU 304	20	52	15	35,5	26	3,25	15000	18000	0.170
NU 305	25	62	17	46,5	36,5	4,55	12000	15000	0.280
NU 306	30	72	19	58,5	48	6,2	11000	12000	0.400
NU 307	35	80	21	75	63	8,15	9500	11000	0.540
NU 308	40	90	23	93	78	10,2	8000	9500	0.730
NU 309	45	100	25	112	100	12,9	7500	8500	1.000
NU 310	50	110	27	127	112	15	6700	8000	1.150
NU 311	55	120	29	156	143	18,6	6000	7000	1.450
NU 312	60	130	31	173	160	20.8	5600	6700	1.800
NU 313	65	140	33	212	196	25,5	5300	6000	2.250
NU 314	70	150	35	236	228	29	4800	5600	2.750
NU 315	75	160	37	280	265	33,5	4500	5300	3.300
NU 316	80	170	39	300	290	36	4300	5000	3.950
NU 317	85	180	41	340	335	41,5	4000	4800	4.700
NU 318	90	190	43	365	360	43	3800	4500	5.450
NU 319	95	200	45	390	390	46,5	3600	4300	6.250
NU 320	100	215	47	450	440	51	3200	3800	7.800
NU 321	105	225	49	500	500	57	3200	3800	8.750
NU 322	110	240	50	530	540	61	3000	3400	10.800
NU 324	120	260	55	610	620	69.5	2800	3200	13.300
NU 326	130	280	58	720	750	81,5	2400	3000	16.500
NU 328	140	300	62	780	830	88	2400	2800	22.700
NU 330	150	320	65	900	965	100	2200	2600	27.500
NU 332	160	340	68	1000	1080	112	2000	2400	32.000
NU 334	170	360	72	952	1180	116	1700	2200	37.500
NU 336	180	380	75	1020	1290	125	1600	2200	45.000
NU 338	190	400	78	1140	1500	143	1500	2000	50.000
NU 340	200	420	80	1230	1630	150	1400	2400	57.500
NU 344	220	460	88	1210	1630	150	1500	1700	72.500
NU 348	240	500	95	1450	2000	180	1300	1600	94.500
NU 352	260	540	102	1940	2700	236	1100	1800	125.000

kunmei kunmei kunmei kunmei kunmei kunmei kunmei kunmei kunmei kunmei kunmei

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NU303 cylindrical roller bearings

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