Custom MR Series Metric Minature Ball Bearing Manufacturers, Factory

MR Series

MR series metric miniature ball bearings are high-performance bearings widely used in small machinery and equipment. This series of bearings are made of high-quality steel and have good wear resistance and corrosion resistance, and can operate stably at higher speeds. The gap between the inner and outer rings and balls of the MR series is precisely designed to reduce friction and increase efficiency. These miniature bearings are commonly used in motors, electronic equipment, medical equipment and toys, and are favored for their small size and light weight. MR series bearings are available in a variety of specifications and sizes to meet different application needs. Bearings can also be customized according to customer requirements to suit specific working environments and load conditions. The design of the MR series ensures low noise and low vibration operating characteristics, making it excellent in applications requiring high precision.

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Designation				Principal dimensions（mm）					Basic load ratings(N)		Basic load ratings{kgf}		Speed ratings(rpm)			Abutment and fillet dimensions (mm)						Weight(g)
With shiled	Open type	With seal VV	With seal DD	d	D	B	B1	r(min)	Cr	Cor	Cr	Cor	Grease		Oil	da(min)	db(max)	Da(Max)	Db(min)	ra(max)	rb(max)	Open type	With shiled
With shiled	Open type	With seal VV	With seal DD	d	D	B	B1	r(min)	Cr	Cor	Cr	Cor	ZZ	D·D	Z	da(min)	db(max)	Da(Max)	Db(min)	ra(max)	rb(max)	Open type	With shiled
MR31	-	-	-	1	3	15	-	0.05	80	23	8	2.5	130000	-	150000	1.4	-	2.6	-	0.05	-	0.04	-
MR41X	MR41XZZ	-	-	1.2	4	1.8	2.5	0.1	138	35	14	3.5	110000	-	130000	2	1.9	3.2	3.5	0.1	0.1	0.1	0.14
MR52B	MR52BZZ	-	-	2	5	2	25	0.1	187	58	19	6	85000	-	100000	2.8	2.7	4.2	4.4	0.1	0.1	0.16	0.23
MR62	MR62ZZ	-	-	2	6	25	2.5	0.15	330	98	34	10	75000	-	90000	3.2	3	4.8	5.2	0.15	0.15	0.3	0.29
MR72	MR72ZZ	-	-	2	7	25	3	0.15	385	127	39	13	63000	-	75000	3.2	3.8	5.8	6.2	0.15	0.15	0.45	0.49
MR82X	-	-	-	2.5	8	25	-	2	560	179	57	18	60000	-	67000	4.1	-	6.4	-	0.2	-	0.56	-
MR63	MR63ZZ	-	-	3	6	2	2.5	0.1	208	74	21	7.5	71000	-	80000	3.8	3.7	5.2	5.4	0.1	0.1	0.2	0.27
MR83	-	-	-	3	8	2.5	-	0.15	560	179	57	18	60000	-	67000	4.2	-	6.8	-	0.15	-	0.54	-
MR93	MR93ZZ	-	-	3	9	25	4	0.2	570	187	58	19	56000	-	67000	4.6	4.3	7.4	7.9	0.2	0.15	0.73	1.18
MR74	-	-	-	4	7	2	-	0.1	310	115	32	12	60000	-	67000	4.8	-	6.2	-	0.1	-	0.22	-
-	MR74ZZ	-	-	4	7	-	25	-	255	107	26	11	60000	-	71000	-	4.8	-	6.3	-	0.1	-	0.29
MR84	MR84ZZ	-	-	4	8	2	3	0.15	395	139	40	14	56000	-	67000	5.2	5	6.8	7.4	0.15	0.1	0.36	0.56
MR104B	MR104BZZ	-	-	4	10	3	4	0.2	710	270	73	28	50000	-	60000	5.6	5.9	8.4	8.8	0.2	0.15	1.04	1.42
MR85	-	-	-	5	8	2	-	0.1	310	120	31	12	53000	-	63000	5.8	-	7.2	-	0.1	-	0.26	-
-	MR85ZZ	-	-	5	8	-	2.5	-	278	131	28	13	53000	-	63000	-	5.8	-	7.4	-	0.1	-	0.34
MR95	MR95ZZ1	-	-	5	9	2.5	3	0.15	430	168	44	17	50000	-	60000	6.2	6	7.8	8.2	0.15	0.15	0.5	0.58
MR105	MR105ZZ	-	-	5	10	3	4	0.15	430	168	44	17	50000	-	60000	6.2	6	8.8	8.4	0.15	0.15	0.95	1.29
-	MR115ZZ	MR115VV	-	5	11	-	4	-	715	276	73	28	48000	-	56000	-	6.3	-	9.8	-	0.15	-	1.49
MR106	MR106ZZ1	-	-	6	10	2.5	3	0.15	495	218	51	22	45000	-	53000	7.2	7	8.8	9.3	0.15	0.1	0.56	0.68
MR126	MR126ZZ	-	MR126DD	6	12	3	4	0.2	715	292	73	30	43000	40000	50000	7.6	7.2	10.4	10.9	0.2	0.15	1.27	1.74
MR117	MR117ZZ	-	-	7	11	2.5	3	0.15	455	201	47	21	43000	-	50000	8.2	8	9.8	10.5	0.15	0.1	0.62	0.72
MR137	MR137ZZ	-	-	7	13	3	4	0.2	540	276	55	28	40000	-	48000	8.6	9	11.4	11.6	0.2	0.15	1.58	2.02
MR128	MR128ZZ1	-	-	8	12	2.5	3.5	0.15	545	274	56	28	40000	-	48000	9.2	9	10.8	11.3	0.15	0.1	0.71	0.97
MR148	MR148ZZ	MR148VV	MR148DD	8	14	3.5	4	0.2	820	385	83	39	38000	32000	45000	9.6	9.2	12.4	12.8	0.2	0.15	1.86	2.16

MR Series

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