带内圈滚针轴承 Needle Roller Bearings with Inner Ring NA49 系列

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轴径 Shaft Diameter mm	型号 Designation	重量 Mass g	尺寸Dimensions					基本额定载荷 Basic Load Ratings		极限转速 Limiting Speed Rpm	原有型号 Original Designation
			d	f	D	B	r min.	动 Cr Dynamic	静 Cor Static
			Mm					N
10	NA4900	23	10	14	22	13	0.3	8.5	9.2	25000	4544900
12	NA4901	26	12	16	24	13	0.3	9.4	10.9	24000	4544901
15	NA4902	34	15	20	28	13	0.3	10.6	13.6	22000	4544902
17	NA4903	37	17	22	30	13	0.3	11	14.6	21000	4544903
20	NA4904	75.2	20	25	37	17	0.3	21	25.5	17000	4544904
22	NA49/22	80	22	28	39	17	0.3	22.8	29.5	16000	--
25	NA4905	88	25	30	42	17	0.3	23.6	31.5	15000	4544905
28	NA49/28	97.7	28	32	45	17	0.3	24.4	33.5	13000	--
30	NA4906	101	30	35	47	17	0.3	2.50	35.5	13000	4544906
32	NA49/32	158	32	40	52	20	0.6	30.5	47.5	12000	--
35	NA4907	170	35	42	55	20	0.6	31.5	50	10000	4544907
40	NA4908	230	40	48	62	22	0.6	43	67	9500	4544908
45	NA4909	271	45	52	68	22	0.6	45	73	8500	4544909
50	NA4910	274	50	58	72	22	0.6	47	80	8000	4544910
55	NA4911	393	55	63	80	25	1	58	100	7500	4544911
60	NA4912	426	60	68	85	25	1	60	108	7000	4544912
65	NA4913	456	65	72	90	25	1	61	112	6500	4544913
70	NA4914	728	70	80	100	30	1	84	156	6000	4544914
75	NA4915	775	75	85	105	30	1	86	162	5500	4544915
80	NA4916	878	80	90	110	30	1.1	89	174	5000	4544916
85	NA4917	1250	85	100	120	35	1.1	111	237	4800	4544917
90	NA4918	1312	90	105	125	35	1.1	114	250	4600	4544918
95	NA4919	1371	95	110	130	35	1.1	116	260	4400	4544919
100	NA4920	1900	100	115	140	40	1.1	128	270	4100	4544920
110	NA4922	2070	110	125	150	40	1.1	132	290	3800	4544922
120	NA4924	2860	120	135	165	45	1.1	181	390	3400	4544924

说明：

1、表中所列基本额定载荷、极限转速和重量，仅供选择参考用。

2、脂润滑时，极限转速为表列数值的60%。

Note:
1. These load, speed and mass is reference of choice only.

2. With grease lubrication, 60% of these limiting speed will apply.