608 Miniature Ball Bearing 8x22x7mm

AKE’s miniature bearing series is engineered for applications requiring compact size, high precision, and high-speed performance. With a wide range of specifications, our miniature bearings are used in high-precision mechanical, electronic, and automation systems. Miniature bearings typically refer to ball bearings with an outer diameter of 10 mm or less. AKE offers precision grades from ABEC-1 to ABEC-5, giving customers flexibility to match different speed, load, and accuracy requirements. AKE supports multiple structures—deep groove miniature bearings, angular contact miniature bearings, thin-wall types—along with open, ZZ, and 2RS sealing options. OEM/ODM customization is available for medical devices, electronics, robotics, sensors, instruments, toys, and pulley mechanisms.

608 Miniature Ball Bearing – Four Major Advantages

608 miniature ball bearings are among the most widely used compact bearings in motors, skateboard wheels, 3D printers, and various precision equipment. Known for their stable performance, durable construction, and universal size standard, 608 bearings have become the preferred choice across many industries. Below are the four core advantages:

1. Compact Size with High Load Capacity

Despite measuring only 8×22×7 mm, the 608 bearing provides strong radial load support and smooth rotation. It is ideal for applications with limited installation space but requiring high reliability and long service life.

2. Smooth, Low-Noise, Low-Friction Operation

High-precision raceways and optimized ball geometry deliver quiet, stable, and low-friction performance—critical for motors, cooling fans, and other high-speed devices.

3. Multiple Sealing Options for Different Environments

AKE offers 608 bearings in open, ZZ metal shield, and 2RS rubber seal configurations. These sealing options ensure reliable operation in dusty, humid, or high-speed environments, helping extend bearing life and enhance long-term stability.

4. Material Options for Enhanced Performance

AKE provides 608 bearings in GCr15 chrome steel and 440C stainless steel. Customers can select the best material for their application needs, including improved corrosion resistance, higher operating speeds, or food-grade compatibility.

608 Miniature Ball Bearing (8x22x7mm) | Specifications & Dimensions

Model

Main dimensions (mm)

Rated load (N)

Limit speed (rpm)

Weight (g)

Open type

Dust cover type

Seal type

d

D

B

B1

r¹

r1¹

Dynamic load rating Cr

Static load rating Cor

Grease lubrication

Oil lubrication

Open type

Dust cover type

Open Z·ZZ

RS·2RS

Open Z

608 Miniature Ball Bearing

ZZ

2RZ/2RS

8

22

7

0.3

330

1370

34000

32000

40000

12.10

12.20

608-ZZ/608-2RZ/608-2RS bearing

(* For more models, please check the product parameter table.)

608-ZZ/608-2RZ/608-2RS Miniature Ball Bearing: Typical Applications

608 miniature ball bearings are widely used in industrial machinery, consumer electronics, and precision automation due to their compact size, smooth rotation, and high reliability. Here are six major application areas for 608 bearings:

1. Motors and Small Power Tools

608 bearings are commonly used in brushless motors, DC motors, and handheld power tools, providing low-friction rotation and a longer service life. Their quiet operation and high speed make them ideal for industrial fans, water pumps, drills, and other small motor drive components.

2. 3D Printers and Automation Equipment

In 3D printers, pick-and-place machines, conveyor systems, and light automated production lines, 608 bearings ensure precise motion and stable conveyor belt tension. Their low noise, high precision, and long-term durability contribute to improved print quality and automation stability.

3. Conveyor Systems and Industrial Rollers

608 miniature bearings are widely used in conveyor rollers, packaging machinery, and sorting systems to ensure smooth and continuous motion. Their wear resistance and reliability help reduce maintenance downtime and ensure stable operation in high-volume industrial environments.

4. Skateboards, Roller Skates, and Sporting Goods

As an industry-standard bearing size, 608 bearings are widely used in skateboard wheels, roller skates, scooters, fitness equipment, and OEM sporting goods. Their high-speed performance, consistent tolerances, and low friction make them a top choice for the sports and leisure market.

5. Cooling Fans and HVAC Systems

From computer cooling fans to industrial HVAC blowers, 608 bearings provide quiet, stable, and durable rotation. Their superior performance helps OEMs improve airflow efficiency, motor stability, and product lifespan—crucial for cooling and ventilation systems in electronic devices.

6. Robotics and Smart Devices

608 miniature ball bearings are widely used in service robots, AGVs, and smart home devices in wheels, robotic arm joints, gearboxes, and drive modules. Their compact design, high precision, and high-speed stability ensure smooth movement and reliable performance in modern robotics and artificial intelligence applications.


Motors and Small Power Tools	3D Printers & Automation Equipment	Conveyor Systems & Industrial Rollers


Skateboards, Roller Skates	Cooling Fans & HVAC Systems	Robotics and Smart Devices

608 Miniature Ball Bearing Manufacturer | ISO-Certified

AKE has focused on bearing manufacturing for more than 20 years, operating its own factory in Wuxi, China, and providing OEM and customized bearing solutions with stable and efficient global supply capability.
📍 Dual offices in China and the United States, enabling fast communication and timely support for international customers.
🧾 ISO 9001:2015–certified production, with 100% strict quality inspection before shipment to ensure consistent performance and reliability.
🌍 Exported to over 20 countries, trusted by customers across Europe, North America, and Southeast Asia. 608 miniature bearing manufacturer

608-ZZ/608-2RZ/608-2RS Miniature Ball Bearing: Frequently Asked Questions

Q1: What Does 608 Mean for Bearings?

A1: In bearings, “608” is a standardized size designation. It indicates a miniature deep groove ball bearing with 8 mm inner diameter, 22 mm outer diameter, and 7 mm width.
The number “608” itself only represents the bearing’s size series, not material, seals, or precision grade.

Q2: Are All 608 Bearings the Same Size?

A2: Yes. All 608 bearings share the same standard size — 8×22×7 mm.
What can differ are the materials, seals (ZZ / 2RS / open), precision grades, and clearance, but the dimensions are always the same.

Q3: What Is the Difference Between 608 and 609 Bearings?

A3: The main difference is size.
608 bearing: 8×22×7 mm
609 bearing: 9×24×7 mm
A 609 bearing has a larger inner and outer diameter, making it slightly bigger and able to handle different shaft sizes compared with a 608.

608 Miniature Ball Bearing (ZZ/2RS): Product Display

OEM/ODM miniature ball bearing

608-ZZ/608-2RZ/608-2RS Miniature Ball Bearing Size Chart-1

Model			Main dimensions (mm)						Rated load (N)		Limit speed (rpm)			Weight (g)
Open type	Dust cover type	Seal type	d	D	B	B1	r ¹	r1¹	Dynamic load rating Cr	Static load rating Cor	Grease lubrication		Oil lubrication	Open type	Dust cover type
Open type	Dust cover type	Seal type	d	D	B	B1	r ¹	r1¹	Dynamic load rating Cr	Static load rating Cor	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

608-ZZ/608-2RZ/608-2RS Miniature Ball Bearing Size Chart-2

Model			Main Dimensions (mm)						Rated Load (N)		Limit Speed (rpm)			Weight (g)
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r ¹	r1¹	Dynamic Load Rating Cr	Static Load Rating Cor	Grease Lubrication		Oil Lubrication	Open Type	Dust Cover Type
Open Type	Dust Cover Type	Seal Type	d	D	B	B1	r ¹	r1¹	Dynamic Load Rating Cr	Static Load Rating Cor	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

608-ZZ/608-2RZ/608-2RS Miniature Ball Bearing Size Chart-3

Model		Main Dimensions (mm)									Rated Load (N)		Limiting Speed (rpm)		Weight (g)
Open Type	Dust Cover Type	d		D		B		B1		r min.	Dynamic Load Rating Cr	Static Load Rating Cor	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 Rating Cr	Static Load Rating Cor	Open Z·ZZ	Open Z	Open Type	Dust Cover Type
R1-5	ZZ	3/32	0.094	5/16	0.31	7/64	0.11	9/64	0.14	0.15	550	175	60000	71000	0.60	0.72
R144	ZZ	1/8	0.125	1/4	0.31	3/32	0.09	7/64	0.11	0.10	283	95	67000	80000	0.25	0.27
R2-5	ZZ			5/16	0.31	7/64	0.11	9/64	0.14	0.10	560	179	60000	67000	0.55	0.72
R2-6	ZZS			3/8	0.38	7/64	0.11	9/64	0.14	0.15	640	225	53000	63000	0.96	1.13
R2	ZZ			3/8	0.38	5/32	0.16	5/32	0.16	0.30	630	218	56000	67000	1.36	1.39
R2A	ZZ			1/2	0.38	11/64	0.17	11/64	0.17	0.30	640	225	53000	63000	3.30	3.23
R155	ZZS	5/32	0.156	5/16	0.31	7/64	0.11	1/8	0.13	0.10	360	149	53000	63000	0.51	0.56
R156	ZZS	3/16	0.188	5/16	0.31	7/64	0.11	1/8	0.13	0.10	360	149	53000	63000	0.39	0.42
R166	ZZ			3/8	0.38	1/8	0.13	1/8	0.13	0.10	710	270	50000	60000	0.81	0.85
R3	ZZ			1/2	0.50	5/32	0.16	10/51	0.20	0.30	1300	485	43000	63000	2.21	2.79
R168B	ZZ	1/4	0.250	3/8	0.38	1/8	0.13	1/8	0.13	0.10	420	204	48000	56000	0.58	0.62
R188	ZZ			1/2	0.50	1/8	0.13	3/16	0.19	0.15	1080	440	40000	50000	1.53	2.24
R4	ZZ			5/8	0.63	10/51	0.20	10/51	0.20	0.30	1610	660	38000	45000	4.50	4.43
R4A	ZZ			3/4	0.75	7/32	0.22	9/32	0.28	0.40	2340	885	36000	43000	7.48	9.17
R1810	ZZ	5/16	0.313	1/2	0.50	5/32	0.16	5/32	0.16	0.15	540	276	40000	48000	1.56	1.48
R6	ZZ	3/8	0.375	7/8	0.88	7/32	0.22	9/32	0.28	0.40	3350	1410	32000	38000	9.02	11.00

Precision Miniature Ball Bearing Size Chart-4

Model			Main Dimensions (mm)								Rated Load (N)		Maximum Speed (rpm)		Weight (g)
Model			Main Dimensions (mm)								Rated Load (N)		Maximum Speed (rpm)		Weight (g)
Open Type	Dust Cover Type	Sealed Type	d	D	D₁	B	B₁	C₁	r¹(min)	r₁¹（min）	Cr	Cor	Grease Lubrication	Oil Lubrication	Open Type	Dust Cover Type
F681	/	/	1	3	3.8	1	/	0.3	0.05	/	80	23	130000	150000	0.04	/
F691	/	/	1	4	5	1.6	/	0.5	0.1	/	140	36	100000	120000	0.14	/
MF41X	/	/	1.2	4	4.8	1.8	/	0.4	0.1	/	138	35	110000	130000	0.12	/
F681X	zz	/	1.5	4	5	1.2	2	0.4	0.05	0.05	112	33	100000	120000	0.09	0.14
F691X	zz	/	1.5	5	6.5	2	2.6	0.6	0.15	0.15	237	69	85000	100000	0.23	0.28
F601X	zz	/	1.5	6	7.5	2.5	3	0.6	0.15	0.15	330	98	75000	90000	0.42	0.52
F682	zz	/	2	5	6.1	1.5	2.3	0.5	0.08	0.08	169	50	85000	100000	0.16	0.22
F52B	zz	/	2	5	6.2	2	2.5	0.6	0.1	0.1	187	58	85000	100000	0.21	0.27
F692	zz	/	2	6	7.5	2.3	3	0.6	0.15	0.15	330	98	75000	90000	0.35	0.48
MF62	/	/	2	6	7.2	2.5	/	0.6	0.15	/	330	98	75000	90000	0.36	/
MF72	zz	/	2	7	8.2	2.5	3	0.6	0.15	0.15	385	127	63000	75000	0.52	0.56
F602	zz	/	2	7	8.5	2.8	3.5	0.7	0.15	0.15	385	127	63000	75000	0.60	0.71
F682X	zz	/	2.5	6	7.1	1.8	2.6	0.5	0.08	0.08	208	74	71000	80000	0.25	0.36
F692X	zz	/	2.5	7	8.5	2.5	3.5	0.7	0.15	0.15	385	127	63000	75000	0.51	0.68
MF82X	/	/	2.5	8	9.2	2.5	/	0.6	0.2	/	560	179	60000	67000	0.62	/
F602X	zz	/	2.5	8	9.5	2.8	4	0.7	0.15	0.15	550	175	60000	71000	0.74	0.98
MF63	zz	/	3	6	7.2	2	2.5	0.6	0.1	0.1	208	74	71000	80000	0.27	0.33
F683A	zz	/	3	7	8.1	2	3	0.5	0.1	0.1	390	130	63000	75000	0.37	0.53
MF83	/	/	3	8	9.2	2.5	/	0.6	0.15	/	560	179	60000	67000	0.56	/
F693	zz	/	3	8	9.5	3	4	0.7	0.15	0.15	560	179	60000	67000	0.70	0.97
MF93	zz	/	3	9	10.2	2.5	4	0.6	0.2	0.15	570	187	56000	67000	0.81	1.34
F603	zz	/	3	9	10.5	3	5	0.7	0.15	0.15	570	187	56000	67000	1.00	1.63
F623	zz	/	3	10	11.5	4	4	1	0.15	0.15	630	218	50000	60000	1.85	1.96
F633	zz	/	3	13	15	5	5	1	0.2	0.2	1300	485	36000	43000	3.73	3.59
MF74	/	/	4	7	8.2	2	/	0.6	0.1	/	310	115	60000	67000	0.29	/
MF74	zz	/	4	7	/	/	2.5	/	/	0.1	255	107	60000	71000	/	0.35
MF84	zz	/	4	8	9.2	2	3	0.6	0.15	0.1	395	139	56000	67000	0.44	0.63
F684	zz	/	4	9	10.3	2.5	4	0.6	0.15	0.15	640	225	53000	63000	0.70	1.14
MF104B	zz	/	4	10	11.2	3	4	0.6	0.2	0.15	710	270	50000	60000	1.13	1.59
F694	zz	/	4	11	12.5	4	4	1	0.15	0.15	960	345	48000	56000	1.91	1.96
F604	zz	/	4	12	13.5	4	4	1	0.2	0.2	960	345	48000	56000	2.53	2.53
F624	zz	/	4	13	15	5	5	1	0.2	0.2	1300	485	40000	48000	3.38	3.53

Precision Miniature Ball Bearing Size Chart-5

Model			Main Dimensions (mm)								Rated Load (N)		Limiting Speed (rpm)			Weight (g)
Model			Main Dimensions (mm)								Rated Load (N)		Limiting Speed (rpm)			Weight (g)
Open Type	Dust Cover Type	Sealed Type	d	D	D₁	B	B₁	C₁	r¹(min)	r₁¹（min）	Cr	Cor	Grease ZZ	Grease 2RS	Oil Lubricated Open	Open Type	Dust Cover Type
MF85	/	/	5	8	9.2	2	/	0.6	0.1	/	310	120	53000	/	63000	0.30	/
MF85	ZZ	/	5	8	/	/	2.5	/	/	0.1	278	131	53000	/	63000	/	0.41
MF95	ZZ	/	5	9	10.2	2.5	3	0.6	0.15	0.15	430	169	50000	/	60000	0.59	0.66
MF105	ZZ	/	5	10	11.2	3	4	0.6	0.15	0.15	430	169	50000	/	60000	1.05	1.46
F685	ZZ	/	5	11	12.5	3	5	0.8	0.15	0.15	715	281	45000	/	53000	1.37	2.18
F695	ZZ	2RS	5	13	15	4	4	1	0.2	0.2	1080	430	43000	40000	50000	2.79	2.84
F605	ZZ	/	5	14	16	5	5	1	0.2	0.2	1330	505	40000	38000	50000	3.90	6.85
F625	ZZ	2RS	5	16	18	5	5	1	0.3	0.3	1730	670	36000	32000	43000	5.37	5.27
F635	ZZ	2RS	5	19	22	6	6	1.5	0.3	0.3	2340	885	32000	30000	40000	9.49	9.49
MF106	ZZ	/	6	10	11.2	2.5	3	0.6	0.15	0.1	495	218	45000	/	53000	0.65	0.08
MF126	ZZ	/	6	12	13.2	3	4	0.6	0.2	0.15	715	292	43000	40000	50000	1.38	1.94
F686A	ZZ	2RS	6	13	15	3.5	5	1	0.15	0.15	1080	440	40000	38000	50000	2.25	3.04
F696	ZZ	2RS	6	15	17	5	5	1.2	0.2	0.2	1730	670	40000	36000	45000	4.34	4.26
F606	ZZ	2RS	6	17	19	6	6	1.2	0.3	0.3	2260	835	38000	34000	45000	6.58	6.61
F626	ZZ	2RS	6	19	22	6	6	1.5	0.3	0.3	2340	885	32000	30000	40000	9.09	9.09
F636	ZZ	2RS	6	22	25	7	7	1.5	0.3	0.3	3300	1370	30000	28000	36000	14.60	14.70
MF117	ZZ	/	7	11	12.2	2.5	3	0.6	0.1	0.1	455	201	43000	/	50000	0.72	0.82
MF137	ZZ	/	7	13	14.2	3	4	0.6	0.15	0.15	540	2765	40000	/	48000	1.70	2.23
F687	ZZ	2RS	7	14	16	3.5	5	1	0.15	0.15	1170	510	40000	34000	45000	2.48	3.37
F697	ZZ	2RS	7	17	19	5	5	1.2	0.3	0.3	1610	715	36000	28000	43000	5.65	5.65
F607	ZZ	2RS	7	19	22	6	6	1.5	0.3	0.3	2340	885	36000	32000	43000	8.66	8.66
F627	ZZ	2RS	7	22	25	7	7	1.5	0.3	0.3	3300	1370	30000	28000	36000	14.20	14.20
MF128	ZZ	/	8	12	13.2	2.5	3.5	0.6	0.1	0.1	545	274	40000	/	48000	0.82	1.15
MF148	ZZ	2RS	8	14	15.6	3.5	4	0.8	0.15	0.15	820	385	38000	32000	45000	2.09	2.39
F688A	ZZ	2RS	8	16	18	4	5	1	0.2	0.2	1610	710	36000	30000	43000	3.54	4.47
F698	ZZ	2RS	8	19	22	6	6	1.5	0.3	0.3	2240	910	36000	28000	43000	8.35	8.30
F608	ZZ	2RS	8	22	25	7	7	1.5	0.3	0.3	3300	1370	34000	28000	40000	13.40	13.50
F689	ZZ	2RS	9	17	19	4	5	1	0.2	0.2	1330	665	36000	24000	43000	3.97	4.91
F699	ZZ	2RS	9	20	23	6	6	1.5	0.3	0.3	1720	840	34000	24000	40000	9.51	9.51

Precision Miniature Ball Bearing Size Chart-2

Model			Main Dimensions (mm)							Rated Load (N)		Limit Speed (rpm)		Weight (g)
Model			Main Dimensions (mm)							Rated Load (N)		Limit Speed (rpm)		Weight (g)
Open Type	Dust Cover Type	Sealed Type	d	D	D₁	B	B₁	C₁	r(min)	Cr	Cor	Grease Lubrication	Oil Lubrication	Open Type	Dust Cover Type
FR0	ZZ	2RS	1.191	3.967	5.156	1.588	2.38	0.330	0.1	138	35	110000	130000	0.11	0.16
FR1	ZZ	2RS	1.397	4.762	5.944	1.984	2.779	0.584	0.1	231	66	90000	110000	0.20	0.25
FR1-4	ZZ	2RS	1.984	6.650	7.518	2.380	3.571	0.584	0.1	310	108	67000	80000	0.41	0.58
FR133		/	2.380	4.762	5.944	1.588	/	0.460	0.1	188	60	80000	95000	0.13	/
FR133	ZZ	FR133	2.380	4.762	5.944	/	2.38	/	0.1	143	52	80000	95000	/	0.19
FR1-5	ZZ	2RS	2.380	7.938	9.119	2.779	3.571	0.584	0.15	550	175	60000	71000	0.68	0.82
FR144	ZZ	2RS	3.175	6.350	7.518	2.380	2.779	0.584	0.1	283	95	67000	80000	0.31	0.35
FR2-5	ZZ	2RS	3.175	7.938	9.119	2.779	3.571	0.584	0.1	560	179	60000	67000	0.62	0.81
FR2-6	ZZS	2RS	3.175	9.525	10.719	2.779	3.571	0.584	0.15	640	225	53000	63000	1.04	1.25
FR2	ZZ	2RS	3.175	9.525	11.176	3.967	3.967	0.762	0.3	630	218	56000	67000	1.51	1.55
FR155	ZZS	2RS	3.967	7.938	9.119	2.779	3.175	0.584	0.1	360	149	53000	63000	0.59	0.67
FR156	ZZS	2RS	4.762	7.938	9.119	2.779	3.175	0.584	0.1	360	149	53000	63000	0.47	0.53
FR166	ZZ	2RS	4.762	9.525	10.719	3.175	3.175	0.584	0.1	710	270	50000	60000	0.90	0.98
FR3	ZZ	2RS	4.762	12.700	14.351	4.978	4.978	1.067	0.3	1300	485	43000	53000	2.97	3.09
FR168B	ZZ	2RS	6.350	9.525	10.719	3.175	3.175	0.584	0.1	420	204	48000	56000	0.66	0.75
FR188	ZZ	2RS	6.350	12.700	13.894	3.175	4.762	0.584	0.15	1080	440	40000	50000	1.64	2.49
FR4B	ZZ	2RS	6.350	15.875	17.526	4.975	4.978	1.067	0.3	1610	660	38000	45000	4.82	4.78
FR1810	ZZ	2RS	7.938	12.700	13.894	3.967	3.967	0.787	0.15	540	276	40000	48000	1.71	1.63
FR6	ZZ	2RS	9.525	22.225	24.613	7.142	7.142	1.570	0.4	3350	1410	32000	38000	10.10	12.10