Miniature bearings

QY221

Among the ultra-small aperture miniature bearings, the types of miniature deep groove ball bearings include metric series such as 68, 69, and 60, and six types of imperial series R. On this basis, they can be further classified into series with ZZ steel plate dust covers, series with RS rubber seals, series with Teflon bearing seals, and series with flange retaining rings, etc.
Miniature bearings refer to all kinds of bearings with a metric series outer diameter less than 9mm and an imperial series outer diameter less than 9.525mm. The main materials include carbon steel, bearing steel, stainless steel, plastic, ceramic, etc. The smallest inner diameter can be as small as 0.6mm, and the inner diameter of 1mm is the most common.

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Bearing No.			d	D	B	B1	r (min.)	Basic Load Rating(KN)		Weight
Open	Shield	Seals						Dynamic	Static	g(pc)
Open	Shield	Seals						Cr	Cor	g(pc)
602	ZZ		2	7	2.8	3.5	0.15	0.39	0.13	0.5
682	ZZ		2	5	1.5	2.3	0.1	0.19	0.06	0.1
692	ZZ		2	6	2.3	3	0.15	0.33	0.1	0.2
68/2.5	ZZ		2.5	6	1.8	2.6	0.1	0.19	0.06	0.2
69/2.5	ZZ		2.5	7	2.5	3.5	0.15	0.31	0.11	0.4
603	ZZ		3	9	3	5	0.15	0.43	0.16	0.9
623	ZZ		3	10	4	4	0.15	0.64	0.23	1.6
633	ZZ		3	13	5	5	0.2	1.3	0.49	3
683	ZZ		3	7	2	3	0.15	0.31	0.11	0.3
693	ZZ		3	8	3	4	0.15	0.55	0.17	0.6
MR83			3	8	2.5	3	0.15	0.56	0.17	0.5
MR93	ZZ		3	9	2.5	4	0.2	0.64	0.22	0.68
604	ZZ	2RS	4	12	4	4	0.2	0.97	0.36	2.1
624	ZZ	2RS	4	13	5	5	0.2	1.3	0.49	2.9
634	ZZ	2RS	4	16	5	5	0.3	1.75	0.67	5.3
684	ZZ		4	9	2.5	4	0.15	0.64	0.23	0.6
694	ZZ		4	11	4	4	0.15	0.96	0.35	1.8
MR84	ZZ		4	8	2	3	0.15	0.39	0.14	0.5
MR104	ZZ		4	10	3	4	0.2	0.65	0.23	0.95
605	ZZ	2RS	5	14	5	5	0.2	1.3	0.49	3.5
625	ZZ	2RS	5	16	5	5	0.3	1.75	0.67	5
635	ZZ	2RS	5	19	6	6	0.3	2.6	1.05	8.5
685	ZZ	2RS	5	11	3	5	0.15	0.97	0.36	1
695	ZZ	2RS	5	13	4	4	0.2	1.3	0.49	2.2
MR95	ZZ		5	9	2.5	3	0.15	0.435	0.168	0.5
MR105	ZZ		5	10	3	4	0.15	0.435	0.168	1
606	ZZ	2RS	6	17	6	6	0.3	1.95	0.74	5.8
626	ZZ	2RS	6	19	6	6	0.3	2.6	1.05	8.1
636	ZZ	2RS	6	22	7	7	0.3	3.3	1.35	13
686	ZZ	2RS	6	13	3.5	5	0.15	1.1	0.44	1.8
696	ZZ	2RS	6	15	5	5	0.2	1.75	0.67	3.9
MR126	ZZ		6	12	3	4	0.2	0.71	0.29	1.2
607	ZZ	2RS	7	19	6	6	0.3	2.6	1.05	7.6
627	ZZ	2RS	7	22	7	7	0.3	3.3	1.35	13
637	ZZ	2RS	7	26	9	9	0.3	4.55	1.95	24
687	ZZ	2RS	7	14	3.5	5	0.15	1.15	0.51	2
697	ZZ	2RS	7	17	5	5	0.3	1.6	0.71	5.3
MR137	ZZ		7	13	3	4	0.15	0.83	0.375	1.5
608	ZZ	2RS	8	22	7	7	0.3	3.3	1.35	12
628	ZZ	2RS	8	24	8	8	0.3	3.35	1.4	18
638	ZZ	2RS	8	28	9	9	0.3	4.55	1.95	29
688	ZZ	2RS	8	16	4	5	0.2	1.6	0.71	3.2
698	ZZ	2RS	8	19	6	6	0.3	2.25	0.91	7.2
MR148	ZZ		8	14	3.5	4	0.15	0.82	0.385	2
609	ZZ	2RS	9	24	7	7	0.3	3.35	1.4	15
629	ZZ	2RS	9	26	8	8	0.6	4.55	2	20
639	ZZ	2RS	9	30	10	10	0.6	6	2.65	35
689	ZZ	2RS	9	17	4	5	0.2	1.35	0.66	3.5
699	ZZ	2RS	9	20	6	6	0.3	2.45	1.05	7.5

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