Precision double-row cylindrical roller bearing (High rigidity 39 series) bore 100-280mm

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Overall dimensions（mm)					Rated load(N)		Rated speed min^-1		Bearing code	Installation dimensions(mm)						Weight(kg)
d	D	B	γ	E_W （Reference）	C_r	C_or	Grease lubrication	Oil lubrication	Bearing code	D_a (minimum）	d_La (minimum)	d_c (minimum)	d_a (maximum）	D_a (minimum）	γ_a (maximum)	(Reference)
280	380	75	2.1	355	695000	1460000	2300	2800	NN 3956MBKR	291	295	—	369	358	2	22.7
260	360	75	2.1	335	670000	1380000	2500	3000	NN 3952MBKR	271	275	—	349	338	2	21.4
240	320	60	2.1	300	460000	975000	2700	3300	NN 3948MBKR	251	254	—	309	303	2	12.1
220	300	60	2.1	279	440000	895000	2900	3500	NN 3944MBKR	231	234	—	289	281	2	11.4
200	280	60	2.1	259	420000	815000	3200	3800	NN 3940MBKR	211	214	228	269	261	2	10.6
190	260	52	2	243.5	345000	680000	3400	4000	NN 3938MBKR	199	203	217	251	245.5	2	7.57
180	250	52	2	232	340000	655000	3500	4200	NN 3936MBKR	189	193	205	241	234	2	7.2
170	230	45	2	215	280000	550000	3800	4500	NN 3934MBKR	179	182	192	221	217	2	5.01
160	220	45	2	205	271000	520000	4000	4800	NN 3932MBKR	169	172	182	211	207	2	4.75
150	210	45	2	195	262000	490000	4200	5000	NN 3930MBKR	159	162	171	201	197	2	4.47
140	190	37	1.5	178	201000	375000	4600	5500	NN 3928MBKR	148	150	158	182	180	1.5	2.97
130	180	37	1.5	167	173000	325000	4900	5900	NN 3926MBKR	138	140	148	172	169	1.5	2.64
120	165	34	1.1	153.5	138000	251000	5300	6400	NN 3924MBKR	126.5	128	137	158.5	154.5	1	1.99
110	150	30	1.1	140	114000	207000	5800	7000	NN 3922MBKR	116.5	118	125	143.5	141	1	1.41
105	145	30	1.1	135	110000	194000	6000	7200	NN 3921MBKR	111.5	113	120	138.5	136	1	1.5
100	140	30	1.1	130	106000	182000	6300	7500	NN 3920MBKR	106.5	108	115	133.5	131	1	1.32