Miniature Bearings

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Miniature Bearings

Miniature bearing are simple in design, non-separable, suitable for high and even very high speeds and are robust in operation, requiring little maintenance.Deep-groove bearings have higher load ratings for their size than shallow-groove , but are also less tolerant of misalignment of the inner and outer races. suitable for precision instrument, low noise electromotor, automobile and motorcycle, etc. It is the the most widely used bearing type.

Series table

Principal dimensions （mm)			Basic load ratings KN		Pu	Speed ratings rpm		Weight kg	Designation
d	D	B	dyc Cr	stc Cor	Pu	Speed Ratings	Limiting Speed	Weight kg	Designation
3	10	4	0.54	0.18	0.007	130000	80000	0.0015	623
4	9	2.5	0.54	0.18	0.007	140000	85000	0.0007	618/4
4	11	4	0.715	0.232	0.01	130000	80000	0.0017	619/4
4	12	4	0.806	0.28	0.012	120000	75000	0.0021	604
4	13	5	0.936	0.29	0.012	110000	67000	0.0031	624
4	16	5	1.11	0.38	0.016	95000	60000	0.0054	634
5	11	3	0.637	0.255	0.011	120000	75000	0.0012	618/5
5	13	4	0.884	0.34	0.014	110000	67000	0.0025	619/5
5	16	5	1.14	0.38	0.016	95000	60000	0.005	*625
5	19	6	2.34	0.95	0.04	80000	50000	0.009	*635
6	13	3.5	0.884	0.345	0.015	110000	67000	0.002	618/6
6	15	5	1.24	0.475	0.02	100000	63000	0.0039	619/6
6	19	6	2.34	0.95	0.04	80000	50000	0.0084	*626
7	14	3.5	0.956	0.4	0.017	100000	63000	0.0022	618/7
7	17	5	1.48	0.56	0.024	90000	56000	0.0049	619/7
7	19	6	2.34	0.95	0.04	85000	53000	0.0075	*607
7	22	7	3.45	1.37	0.057	70000	45000	0.013	*627
8	16	4	1.33	0.57	0.024	90000	56000	0.003	618/8
8	19	6	1.9	0.735	0.031	80000	50000	0.0071	619/8
8	22	7	3.45	1.37	0.057	75000	48000	0.012	*608
8	24	8	3.9	1.66	0.071	63000	40000	0.017	*628
9	17	4	1.43	0.64	0.027	85000	53000	0.0034	618/9
9	20	6	2.08	0.865	0.036	80000	48000	0.0076	619/9
9	24	7	3.9	1.66	0.071	70000	43000	0.014	*609
9	26	8	4.75	1.96	0.083	60000	38000	0.02	*629
10	19	5	1.38	0.585	0.025	80000	48000	0.0055	61800
10	22	6	2.08	0.85	0.036	75000	45000	0.01	61900
10	26	8	4.75	1.96	0.083	67000	40000	0.019	*6000
10	28	8	4.62	1.96	0.083	63000	40000	0.022	16100
10	30	9	5.4	2.36	0.1	56000	34000	0.032	*6200
10	35	11	8.52	3.4	0.143	50000	32000	0.053	*6300

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