Cylindrical Roller Bearing N303EM

Cylindrical roller bearing has cylindrical inner hole and conical inner hole.
This kind of bearing has the advantages of compact structure, large rigidity, large bearing capacity and small deformation after loading, especially suitable for spindle bearing of machine tool.
The conical inner hole can also adjust the clearance slightly and simplify the structure of the positioning device for easy installation and disassembly.

Description

Product Name	Cylindrical Roller Bearings N303EM
Material	Chrome Steel
Inside diameter	17-190mm
Outside Diameter	47-400mm
cage	Brass, Steel
Packing	According to the buyer requests for packaging

Designation	Old model	Principal Dimension			Basic Load Ratings（KN）		Speed ratings(r/min)		Weight (kg)
Designation	Old model	d	D	B	Dynamic	Static	Grease	Oil	Weight (kg)
N303EM	2303EH	17	47	14	30	31	25000	13000	0.1
N304EM	2304EH	20	52	15	41	25	23000	11000	0.18
N305EM	2305EH	25	62	17	49	37.5	21500	10100	0.201
N306EM	2306EH	30	72	19	61	48	18500	5900	0.41
N307EM	2307EH	35	80	21	76	63	16400	7900	0.56
N308EM	2308EH	40	90	23	96	79	14200	7100	0.815
N309EM	2309EH	45	100	25	116	99	9800	6400	0.893
N310EM	2310EH	50	110	27	131	114	11600	6000	1.32
N311EM	2311EH	55	120	29	159	139	10400	5500	1.77
N312EM	2312EH	60	130	31	177	157	9600	5200	2.12
N313EM	2313EH	65	140	33	214	191	8800	4800	2.53
N314EM	2314EH	70	150	35	242	222	8200	4500	3.09
N315EM	2315EH	75	160	37	285	265	7600	4150	3.96
N316EM	2316EH	80	170	39	300	275	7200	4100	4.58
N317EM	2317EH	85	180	41	340	325	6800	6800	5.38
N318EM	2318EH	90	190	43	370	350	6300	3650	6.1
N319EM	2319EH	95	200	45	390	380	6100	3550	7.06
N320EM	2320EH	100	215	47	450	425	5800	5600	8.85
N321EM	2321EH	105	225	49	480	465	5200	3500	10.7
N322EM	2322EH	110	240	50	520	510	5000	2950	12.1
N324EM	2324EH	120	260	55	610	600	4550	2650	15.9
N326EM	2326EH	130	280	58	720	720	4250	2340	18
N328EM	2328EH	140	300	62	790	800	3950	2170	22
N330EM	2330EH	150	320	65	900	930	3650	1940	27.8
N332EM	2332EH	160	340	68	860	1060	3000	1770	32.6
N334EM	2334EH	170	360	72	960	1210	2800	1610	38.4
N336EM	2336EH	180	380	75	1020	1290	1500	2200	42.7
N338EM	2338EH	190	400	78	1140	1500	1400	2000	50.3