Miniature Metric Bearings-Miniature Bearings-Ktaiballbearing

Miniature Metric Bearings can have bore size as small as 1 mm.The construction of miniature metric bearings can carry moderate radial and thrust loads at low operating torque and provide high performance.
Miniature Metric Bearings are sometimes referred to as instrument bearings or micro bearings. They are applied to skateboards, small motors, miniature gearboxes, RC models, toys, clocks etc.

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bearing material: chrome steel(GCr15/SAE52100) and stainless steel(440/316/304)
Seals: open, ZZ(metal shields), 2RS(rubber seals)
tolerance: P0(ABCE-1), P6(ABCE-3), P5(ABCE-5), P4(ABEC-7), P2(ABCE-9)
clerance: C0, C2, C3
noise: Z(normal), Z1, Z2, Z3.
vibration: V(normal), V1, V2, V3.

model	d(mm) bore	D(mm) outer	B(mm) width open	B1(mm) width shields/seals	Dynamic Load Cr(N)	Static Load Cor(N)	grease limiting speed (rpm)	oil limiting speed (rpm)	weight(g) open	weight(g) shields/seals
681	1	3	1		82	21	130000	150000	0.03
MR31		3	1.5		82	21	130000	150000	0.05
691		4	1.6		120	30	100000	120000	0.11
681X	1.5	4	1.2	2	95	26	100000	120000	0.1	0.14
691X		5	2	2.6	144	40	85000	100000	0.2	0.25
601X		6	2.5	3	281	79	75000	90000	0.31	0.4
682	2	5	1.5	2.3	144	40	85000	100000	0.15	0.2
MR52		5	2	2.5	144	40	85000	100000	0.14	0.2
692		6	2.3	3	281	79	75000	90000	0.28	0.35
MR62		6	2.5	2.5	281	79	75000	90000	0.28	0.33
MR72		7	2.5	3	328	103	63000	75000	0.43	0.53
602		7	2.8	3.5	328	103	60000	71000	0.5	0.6
682X	2.5	6	1.8	2.6	178	59	71000	80000	0.21	0.35
692X		7	2.5	3.5	328	103	63000	75000	0.4	0.55
MR82X		8	2.5		474	144	60000	67000	0.52
602X		8	2.8	4	469	142	60000	71000	0.61	0.85
MR63	3	6	2	2.5	178	59	71000	80000	0.2	0.28
683		7	2	3	264	90	63000	75000	0.32	0.45
MR83		8	2.5	3	336	113	60000	67000	0.51	0.67
693		8	3	4	474	144	60000	67000	0.6	0.8
MR93		9	2.5	4	485	151	56000	67000	0.75	1.15
603		9	3	5	230	151	56000	67000	0.84	1.13
623		10	4	4	536	175	50000	60000	1.45	1.65
633		13	5	5	1106	390	40000	48000	3.27	3.43
MR74	4	7	2	2.5	264	92	60000	67000	0.23	0.33
MR84		8	2	3	336	113	56000	67000	0.39	0.56
684		9	2.5	4	545	182	53000	63000	0.65	1
MR104		10	3	4	604	218	48000	56000	0.96	1.33
694		11	4	4	814	280	48000	56000	1.69	1.75
604		12	4	4	814	280	48000	56000	2.19	2.34
624		13	5	5	1106	390	40000	48000	3.1	3.2
634		16	5	5	1139	418	36000	43000	5.24	5.44
MR85	5	8	2	2.5	185	72	53000	63000	0.25	0.34
MR95		9	2.5	3	366	135	50000	60000	0.54	0.58
MR105		10	3	4	366	135	50000	60000	0.91	1.26
MR115		11		4	609	226	45000	63000	0.62
685		11	3	5	609	226	45000	53000	1.16	1.93
695		13	4	4	916	346	43000	50000	2.31	2.5
605		14	5	5	1130	406	40000	50000	3.46	3.75
625		16	5	5	1470	540	36000	43000	4.95	5.1
635		19	6	6	1986	717	32000	40000	8.5	8.89
MR106	6	10	2.5	3	422	174	45000	53000	0.55	0.7
MR126		12	3	4	609	236	43000	50000	1.25	1.66
686		13	3.5	5	920	354	40000	50000	1.87	2.68
696		15	5	5	1139	418	40000	45000	2.85	3.65
606		17	6	6	1924	677	38000	45000	5.94	6.89
626		19	6	6	1986	717	32000	40000	8.12	8.65
636		22	7	7	2833	1138	30000	36000	13.9	14.5
MR117	7	11	2.5	3	387	162	43000	50000	0.59	0.71
MR137		13	3	4	460	221	40000	48000	1.52	2.01
687		14	3.5	5	997	410	40000	50000	2.03	2.95
697		17	5	5	1364	575	36000	43000	5.26	5.7
607		19	6	6	1986	717	36000	43000	7.8	8.24
627		22	7	7	2794	1103	30000	36000	12.7	13.1
637		26	9	9	3879	1586	28000	34000	24.2	25.8
MR128	8	12	2.5	3.5	462	219	40000	48000	0.7	0.99
MR148		14	3.5	4	695	309	38000	45000	1.9	2.19
688		16	4	5	1064	474	36000	43000	3.11	4.05
698		19	6	6	1902	734	36000	43000	7.12	7.57
608		22	7	7	2799	1103	34000	40000	11.8	12.9
628		24	8	8	2833	1138	28000	34000	17.1	18.5
638		28	9	9	3879	1586	28000	34000	28.1	30.3
679	9	14	3	4.5	781	374	36000	42000	1.35	1.98
689		17	4	5	1128	534	36000	43000	3.41	4.38
699		20	6	6	2097	865	34000	40000	8.38	8.54
609		24	7	7	2853	1155	32000	38000	14.7	16
629		26	8	8	3879	1586	28000	34000	19	21.8
639		30	10	10	3960	1664	24000	30000	36.2	37.1

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