Miniature Bearing

Classification:

Miniature Bearing

Miniature bearings are characterised by high load carrying capacity, low friction and high rotational speed, providing smooth rotary motion in small spaces. They usually adopt the structure of deep groove ball bearings or angular contact ball bearings, and there are also some specially designed miniature bearings, such as thin-walled bearings, ceramic bearings and so on.

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Bertone Miniature Bearing Part No.			Main Dimensions(mm)						Rated Load(N)		Limiting Speed(rpm)			Weights(g)
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r¹	r1¹	Dynamic load Cr	Static load C0r	Grease Lubrication		Oil Lubrication	Open Type	Dust Cover Type
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r¹	r1¹	Dynamic load Cr	Static load C0r	Open Z·ZZ	RS·2RS	Open Z	Open Type	Dust Cover Type
MR63	ZZ	—	3	6	2	2.5	0.1	0.1	208	74	71000	—	8000	0.20	0.27
683A	ZZ	—	3	7	2	3	0.1	0.1	390	130	63000	—	75000	0.32	0.45
MR83	—	—	3	8	2.5	—	0.15	—	560	179	60000	—	67000	0.54	—
693	ZZ	—	3	8	3	4	0.15	0.15	560	179	60000	—	67000	0.61	0.83
MR93	ZZ	—	3	9	2.5	4	0.2	0.15	570	187	56000	—	67000	0.73	1.18
603	ZZ	—	3	9	3	5	0.15	0.15	570	187	56000	—	67000	0.87	1.45
623	ZZ	—	3	10	4	4	0.15	0.15	630	218	50000	—	60000	1.65	1.66
633	ZZ	—	3	13	5	5	0.2	0.2	1300	485	40000	—	48000	3.38	3.33
MR74	—	—	4	7	2	—	0.1	—	310	115	60000	—	67000	0.22	—
—	MR74ZZ	—	4	7	—	2.5	—	0.1	255	107	60000	—	71000	—	0.29
MR84	ZZ	—	4	8	2	3	0.15	0.1	395	139	56000	—	67000	0.36	0.56
684A	ZZ	—	4	9	2.5	4	0.15	0.15	640	225	53000	—	63000	0.63	1.01
MR104B	ZZ	—	4	10	3	4	0.2	0.15	710	270	50000	—	60000	1.04	1.42
694	ZZ	—	4	11	4	4	0.15	0.15	960	345	48000	—	56000	1.70	1.75
604	ZZ	—	4	12	4	4	0.2	0.2	960	345	48000	—	56000	2.25	2.29
624	ZZ	—	4	13	5	5	0.2	0.2	1300	485	40000	—	48000	3.03	3.04
MR85	—	—	5	8	2	—	0.1	—	310	120	53000	—	63000	0.26	—
—	MR85ZZ	—	5	8	—	2.5	—	0.1	278	131	53000	—	63000	—	0.34
MR95	ZZ	—	5	9	2.5	3	0.15	0.15	430	168	50000	—	60000	0.50	0.58
MR105	ZZ	—	5	10	3	4	0.15	0.15	430	168	50000	—	60000	0.95	1.29
—	MR115ZZ	2RS	5	11	—	4	—	0.15	715	276	48000	—	56000	—	1.49
685	ZZ	—	5	11	3	5	0.15	0.15	715	281	45000	—	53000	1.20	1.96
695	ZZ	2RZ/2RS	5	13	4	4	0.2	0.2	1080	430	43000	40000	50000	2.45	2.50
605	ZZ	2RS	5	14	5	5	0.2	0.2	1330	505	40000	38000	50000	3.54	3.48
625	ZZ	2RZ/2RS	5	16	5	5	0.3	0.3	1730	670	36000	32000	43000	4.95	4.86
635	ZZ	2RZ/2RS	5	19	6	6	0.3	0.3	2340	885	32000	30000	40000	8.56	8.34

Key words:

Miniature Bearing

Bertone Miniature Bearing Part No.			Main Dimensions(mm)						Rated Load(N)		Limiting Speed（rpm）			Weights(g)
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r¹	r1¹	Dynamic load Cr	Static load C0r	Grease Lubrication		Oil Lubrication	Open Type	Dust Cover Type
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r¹	r1¹	Dynamic load Cr	Static load C0r	Open Z·ZZ	RS·2RS	Open Z	Open Type	Dust Cover Type
MR106	ZZ	—	6	10	2.5	3	0.15	0.1	495	218	45000	40000	53000	0.56	0.68
MR126	—	2RS	6	12	3	4	0.2	0.15	715	292	43000	38000	50000	1.27	1.74
686	ZZ	2RZ/2RS	6	13	3.5	5	0.15	0.15	1080	440	40000	36000	50000	1.91	2.69
696	ZZ	2RZ/2RS	6	15	5	5	0.2	0.2	1730	670	40000	30000	45000	3.88	3.72
606	ZZ	2RZ/2RS	6	17	6	6	0.3	0.3	2260	835	38000	34000	45000	5.97	6.08
626	ZZ	2RZ/2RS	6	19	6	6	0.3	0.3	2340	885	32000	30000	40000	8.15	7.94
636	ZZ	2RZ/2RS	6	22	7	7	0.3	0.3	3300	1370	30000	28000	36000	14.00	14.00
MR117	ZZ	—	7	11	2.5	3	0.15	0.1	455	201	43000	—	50000	0.62	0.72
MR137	ZZ	—	7	13	3	4	0.2	0.15	540	276	40000	—	48000	1.58	2.02
687	ZZ	2RZ/2RS	7	14	3.5	5	0.15	0.15	1170	510	40000	34000	45000	2.13	2.97
697	ZZ	2RZ/2RS	7	17	5	5	0.3	0.3	1610	710	36000	28000	43000	5.26	5.12
607	ZZ	2RZ/2RS	7	19	6	6	0.3	0.3	2340	885	36000	32000	43000	7.67	7.51
627	ZZ	2RZ/2RS	7	22	7	7	0.3	0.3	3300	1370	30000	28000	36000	12.70	12.90
637	ZZ	2RZ/2RS	7	26	9	9	0.3	0.3	4550	1970	28000	22000	34000	24.00	25.00
MR128	ZZ	—	8	12	2.5	3.5	0.15	0.1	820	274	40000	—	48000	0.71	0.97
MR148	ZZ	2RZ/2RS	8	14	3.5	4	0.2	0.15	820	385	38000	32000	45000	1.86	2.16
688A	ZZ	2RZ/2RS	8	16	4	5	0.2	0.2	1610	710	36000	32000	43000	3.12	4.02
698	ZZ	2RZ/2RS	8	19	6	6	0.3	0.3	2240	910	36000	32000	43000	7.23	7.18
608	ZZ	2RZ/2RS	8	22	7	7	0.3	0.3	330	1370	34000	32000	40000	12.10	12.20
628	ZZ	2RZ/2RS	8	24	8	8	0.3	0.3	3350	1430	28000	24000	34000	17.20	17.40
638	ZZ	2RZ/2RS	8	28	9	9	0.3	0.3	4550	1970	28000	22000	34000	28.30	28.60
689	ZZ	2RZ/2RS	9	17	4	5	0.2	0.2	1330	665	36000	24000	43000	3.53	4.43
699	ZZ	2RZ/2RS	9	20	6	6	0.3	0.3	1720	840	34000	24000	40000	8.45	8.33
609	ZZ	2RZ/2RS	9	24	7	7	0.3	0.3	3350	1430	32000	24000	38000	14.50	14.70
629	ZZ	2RZ/2RS	9	26	8	8	0.6	0.6	4550	1970	2000	22000	34000	19.50	19.30
639	ZZ	—	9	30	10	10	0.6	0.6	5100	2390	24000	—	30000	36.50	36.00

Bertone Miniature Bearing Part No.		Main Dimensions(mm)									Rated Load(N)		Limiting Speed(rpm)		Weights(g)
Open Type	Dust Cover Type	d		D		B		B1		r min.	Dynamic load Cr	Static load C0r	Grease Lubrication	Oil Lubrication	Open Type	Dust Cover Type
Open Type	Dust Cover Type	Frac.	Inch	Frac.	Inch	Frac.	Inch	Frac.	Inch	r min.	Dynamic load Cr	Static load C0r	Open Z·ZZ	Open Z	Open Type	Dust Cover Type
R1-5	ZZ	3/32	.094	5/16	.31	7/64	.11	9/64	.14	.15	550	175	60000	71000	0.60	0.72
R144	ZZ	1/8	.125	1/4	.31	3/32	.09	7/64	.11	.10	283	95	67000	80000	0.25	0.27
R2-5	ZZ			5/16	.31	7/64	.11	9/64	.14	.10	560	179	60000	67000	0.55	0.72
R2-6	ZZS			3/8	.38	7/64	.11	9/64	.14	.15	640	225	53000	63000	0.96	1.13
R2	ZZ			3/8	.38	5/32	.16	5/32	.16	.30	630	218	56000	67000	1.36	1.39
R2A	ZZ			1/2	.38	11/64	.17	11/64	.17	.30	640	225	53000	63000	3.30	3.23
R155	ZZS	5/32	.156	5/16	.31	7/64	.11	1/8	.13	.10	360	149	53000	63000	0.51	0.56
R156	ZZS	3/16	.188	5/16	.31	7/64	.11	1/8	.13	.10	360	149	53000	63000	0.39	0.42
R166	ZZ			3/8	.38	1/8	.13	1/8	.13	.10	710	270	50000	60000	0.81	0.85
R3	ZZ			1/2	.50	5/32	.16	10/51	.20	.30	1300	485	43000	63000	2.21	2.79
R168B	ZZ	1/4	.250	3/8	.38	1/8	.13	1/8	.13	.10	420	204	48000	56000	0.58	0.62
R188	ZZ			1/2	.50	1/8	.13	3/16	.19	.15	1080	440	40000	50000	1.53	2.24
R4	ZZ			5/8	.63	10/51	.20	10/51	.20	.30	1610	660	38000	45000	4.50	4.43
R4A	ZZ			3/4	.75	7/32	.22	9/32	.28	.40	2340	885	36000	43000	7.48	9.17
R1810	ZZ	5/16	.313	1/2	.50	5/32	.16	5/32	.16	.15	540	276	40000	48000	1.56	1.48
R6	ZZ	3/8	.375	7/8	.88	7/32	.22	9/32	.28	.40	3350	1410	32000	38000	9.02	11.00

Miniature Bearing

Miniature ball bearings can basically be divided into deep groove and angular contact types. The most typical types of deep groove bearings include outer rings with stopping edges, wide inner rings, thin-walled and special shaped synchronous bearings. In addition, according to the presence or absence of seals and dust caps, they can be divided into open type, seal type and dust cap type.
Miniature Bearing Applications

Deep groove ball bearings can be used in gearboxes, instruments, electric motors, household appliances, internal combustion engines, transport vehicles, agricultural machinery, engineering machinery, construction machinery, roller shoes, yo-yos and so on.