Miniature Ball Bearing

Miniature Ball Bearings are compact and small-sized bearings that are commonly used in applications requiring precise rotation and low friction. These bearings, typically with an outer diameter of less than 30 mm, offer excellent performance in limited-space environments. With their miniature size and high rotational speed capabilities, they find extensive use in industries such as robotics, electronics, medical devices, and precision instruments. Miniature Ball Bearings provide smooth and reliable operation, reducing energy consumption and extending the lifespan of equipment. Their small form factor and precision make them ideal for applications where space and accuracy are critical.

Technial Specification

Table 1

Bearing Designation				Boundary Dimensions						Basic Load Rating		Limiting Speed			Shoulder Dimensions				Mass
				(mm)						(kN)		(rpm)			(mm)				(g)
												Grease		Oil
Open type	With steel shields	Without	With contacting	d	D	B	B1	r	r1	Cr	Cor	Open Type	(2RS)	Open Type	da	Da	ra	rb	Approx
		contacting	rubber seals					(min.)	(min.)			(ZZ,2RU)		(Z)	(min.)	(max.)	(max.)	(max.)
		rubber seals
604	604 ZZ	604 2RU	604 2RS	4	12	4	4	0.2	0.2	0.97	0.36	53000	0	63000	5.6	10.4	0.2	0.2	2.1
605	605 ZZ	605 2RU	605 2RS	5	14	5	5	0.2	0.2	1.3	0.49	50000	0	60000	6.6	12.4	0.2	0.2	3.5
606	606 ZZ	606 2RU	606 2RS	6	17	6	6	0.3	0.3	1.95	0.74	43000	0	51000	8	15	0.3	0.3	5.8
607	607 ZZ	607 2RU	607 2RS	7	19	6	6	0.3	0.3	2.6	1.05	40000	27000	47000	9	17	0.3	0.3	7.6
608	608 ZZ	608 2RU	608 2RS	8	22	7	7	0.3	0.3	3.3	1.35	34000	23000	41000	10	20	0.3	0.3	12
609	609 ZZ	609 2RU	609 2RS	9	24	7	7	0.3	0.3	3.35	1.4	33000	22000	40000	11	22	0.3	0.3	15
623	623 ZZ	623 2RU	623 2RS	3	10	4	4	0.15	0.15	0.64	0.23	52000	44000	63000	4.2	8.8	0.15	0.15	1.6
624	624 ZZ	624 2RU	624 2RS	4	13	5	5	0.2	0.2	1.3	0.49	44000	39000	54000	5.6	11.4	0.2	0.2	2.9
625	625 ZZ	625 2RU	625 2RS	5	16	5	5	0.3	0.3	1.75	0.67	40000	33000	49000	7	14	0.3	0.3	5
626	626 ZZ	626 2RU	626 2RS	6	19	6	6	0.3	0.3	2.6	1.05	35000	27000	43000	8	17	0.3	0.3	8.1
627	627 ZZ	627 2RU	627 2RS	7	22	7	7	0.3	0.3	3.3	1.35	31000	23000	37000	9	20	0.3	0.3	13
628	628 ZZ	628 2RU	628 2RS	8	24	8	8	0.3	0.3	3.35	1.4	28000	22000	35000	10	22	0.3	0.3	18
629	629 ZZ	629 2RU	629 2RS	9	26	8	8	0.6	0.6	4.55	2	27000	19000	33000	13	22	0.3	0.3	20
633	633 ZZ	633 2RU	633 2RS	3	13	5	5	0.2	0.2	1.3	0.49	44000	0	54000	4.6	11.4	0.2	0.2	3
634	634 ZZ	634 2RU	634 2RS	4	16	5	5	0.3	0.3	1.75	0.67	40000	0	49000	6	14	0.3	0.3	5.3
635	635 ZZ	635 2RU	635 2RS	5	19	6	6	0.3	0.3	2.6	1.05	35000	27000	43000	7	17	0.3	0.3	8.5
636	636 ZZ	636 2RU	636 2RS	6	22	7	7	0.3	0.3	3.3	1.35	31000	23000	37000	8	20	0.3	0.3	13
637	637 ZZ	637 2RU	637 2RS	7	26	9	9	0.3	0.3	4.55	1.95	26000	0	32000	9	24	0.3	0.3	24
638	638 ZZ	638 2RU	638 2RS	8	28	9	9	0.3	0.3	4.55	1.95	26000	0	32000	10	26	0.3	0.3	29
639	639 ZZ	639 2RU	639 2RS	9	30	10	10	0.6	0.6	6	2.65	24000	0	29000	13	26	0.6	0.6	35
694	694 ZZ	694 2RU	694 2RS	4	11	4	4	0.15	0.15	0.96	0.35	54000	44000	65000	5.2	9.8	0.15	0.15	1.8
695	695 ZZ	695 2RU	695 2RS	5	13	4	4	0.2	0.2	1.3	0.49	50000	42000	60000	6.6	11.4	0.2	0.2	2.2
696	696 ZZ	696 2RU	696 2RS	6	15	5	5	0.2	0.2	1.75	0.67	45000	32000	54000	7.6	13.4	0.2	0.2	3.9
697	697 ZZ	697 2RU	697 2RS	7	17	5	5	0.3	0.3	1.6	0.71	42000	28000	50000	9	15	0.3	0.3	5.3
698	698 ZZ	698 2RU	698 2RS	8	19	6	6	0.3	0.3	2.25	0.91	39000	27000	46000	10	17	0.3	0.3	7.2
699	699 ZZ	699 2RU	699 2RS	9	20	6	6	0.3	0.3	2.45	1.05	35000	25000	42000	11	18	0.3	0.3	7.5
602	602 ZZ	602 2RU	602 2RS	2	7	2.8	3.5	0.15	0.15	0.39	0.13	76000	0	79000	3.2	5.8	0.15	0.15	0.5
603	603 ZZ	603 2RU	603 2RS	3	9	3	5	0.15	0.15	0.43	0.16	60000	0	72000	4.2	7.8	0.15	0.15	0.9
68/2.5	68/2.5 ZZ	68/2.5 2RU	68/2.5 2RS	2.5	6	1.8	2.6	0.1	0.1	0.19	0.06	75000	0	89000	3.3	5.2	0.1	0.1	0.2
682	682 ZZ	682 2RU	682 2RS	2	5	1.5	2.3	0.1	0.1	0.19	0.06	98000	0	110000	2.8	4.4	0.1	0.1	0.1
683	683 ZZ	683 2RU	683 2RS	3	7	2	3	0.15	0.15	0.31	0.11	66000	0	79000	4.2	5.8	0.1	0.1	0.3
684	684 ZZ	684 2RU	684 2RS	4	9	2.5	4	0.15	0.15	0.64	0.23	59000	0	70000	5.2	7.8	0.1	0.1	0.6
685	685 ZZ	685 2RU	685 2RS	5	11	3	5	0.15	0.15	0.97	0.36	53000	0	63000	6.2	9.8	0.15	0.15	0.1
686	686 ZZ	686 2RU	686 2RS	6	13	3.5	5	0.15	0.15	1.1	0.44	48000	36000	57000	7.2	11.8	0.15	0.15	1.8
687	687 ZZ	687 2RU	687 2RS	7	14	3.5	5	0.15	0.15	1.15	0.51	45000	0	54000	8.2	12.8	0.15	0.15	2
688	688 ZZ	688 2RU	688 2RS	8	16	4	5	0.2	0.2	1.6	0.71	42000	28000	50000	9.6	14.4	0.2	0.2	3.2
689	689 ZZ	689 2RU	689 2RS	9	17	4	5	0.2	0.2	1.35	0.66	39000	0	46000	10.6	15.4	0.2	0.2	3.5
69/2.5	69/2.5 ZZ	69/2.5 2RU	69/2.5 2RS	2.5	7	2.5	3.5	0.15	0.15	0.31	0.11	66000	0	79000	3.7	5.8	0.15	0.15	0.4
692	692 ZZ	692 2RU	692 2RS	2	6	2.3	3	0.15	0.1	0.33	0.1	86000	0	100000	3.2	4.8	0.15	0.1	0.2
693	693 ZZ	693 2RU	693 2RS	3	8	3	4	0.15	0.15	0.55	0.17	64000	0	76000	4.2	6.8	0.15	0.15	0.6

Advantages

Space-saving: The compact size of Miniature Ball Bearings allows for efficient use of limited space in various applications. They are particularly useful in devices and equipment where size constraints exist.
Low friction: These bearings are designed to minimize friction and provide smooth rotational motion. This reduces energy consumption and ensures efficient operation, making them suitable for applications where power efficiency is crucial.
High precision: Miniature Ball Bearings are manufactured with high precision, resulting in accurate and reliable performance. They are commonly used in precision instruments, optical devices, and robotics, where precise movements and positioning are required.
High rotational speed: Despite their small size, Miniature Ball Bearings can handle high rotational speeds. This makes them suitable for applications that demand quick and precise motion, such as small motors, machine tools, and high-speed machinery.
Long lifespan: Miniature Ball Bearings are engineered for durability and long service life. They are manufactured using high-quality materials and advanced manufacturing techniques, ensuring their ability to withstand demanding operating conditions.
Versatility: Miniature Ball Bearings are available in a wide range of configurations, including open, shielded, and sealed designs. This versatility allows them to be adapted to various environments and operating conditions, making them suitable for diverse applications.