All Ball Bearings Sizes Chart
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1. 6000 Series Ball Bearing Sizes Chart
*ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
Quick Search for Bearing Sizes
A bearing’s size is defined by three main dimensions – inner diameter (bore), outer diameter and width – usually written as ID × OD × W in millimetres.
Proper selection based on the chart is critical to prevent issues such as increased friction, overheating, reduced efficiency, and premature bearing failure.
Users must verify dimensions, load ratings, speed ratings, and clearance suitability for their specific application.
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*ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
| Bearing No. | Bore(d) (mm) | Outer(D) (mm) | Width(B) (mm) | r (mm) | Dynamic (kgf) | Static (kgf) | Weight (g) |
|---|---|---|---|---|---|---|---|
| 6000 | 10 | 26 | 8 | 0.5 | 360 | 196 | 19 |
| 6001 | 12 | 28 | 8 | 0.5 | 400 | 229 | 22 |
| 6002 | 15 | 32 | 9 | 0.5 | 440 | 263 | 30 |
| 6003 | 17 | 35 | 10 | 0.5 | 470 | 296 | 39 |
| 6004 | 20 | 42 | 12 | 1 | 735 | 465 | 69 |
| 6005 | 25 | 47 | 12 | 1 | 790 | 525 | 80 |
| 6006 | 30 | 55 | 13 | 1.5 | 1030 | 740 | 116 |
| 6007 | 35 | 62 | 14 | 1.5 | 1250 | 915 | 155 |
| 6008 | 40 | 68 | 15 | 1.5 | 1310 | 1010 | 192 |
| 6009 | 45 | 75 | 16 | 1.5 | 1640 | 1320 | 245 |
| 6010 | 50 | 80 | 16 | 1.5 | 1710 | 1430 | 261 |
* ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
| Bearing No. | Bore(d) (mm) | Outer(D) (mm) | Width(B) (mm) | r (mm) | Dynamic (kgf) | Static (kgf) | Weight (g) |
|---|---|---|---|---|---|---|---|
| 6200 | 10 | 30 | 9 | 1 | 400 | 229 | 32 |
| 6201 | 12 | 32 | 10 | 1 | 535 | 305 | 37 |
| 6202 | 15 | 35 | 11 | 1 | 600 | 360 | 45 |
| 6203 | 17 | 40 | 12 | 1 | 750 | 460 | 65 |
| 6204 | 20 | 47 | 14 | 1.5 | 1000 | 635 | 106 |
| 6205 | 25 | 52 | 15 | 1.5 | 1100 | 730 | 128 |
| 6206 | 30 | 62 | 16 | 1.5 | 1530 | 1050 | 199 |
| 6207 | 35 | 72 | 17 | 2 | 2010 | 1430 | 288 |
| 6208 | 40 | 80 | 18 | 2 | 2280 | 1650 | 366 |
| 6209 | 45 | 85 | 19 | 2 | 2570 | 1880 | 407 |
| 6210 | 50 | 90 | 20 | 2 | 2750 | 2100 | 463 |
* ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
| Bearing No. | Bore(d) (mm) | Outer(D) (mm) | Width(B) (mm) | r (mm) | Dynamic (kgf) | Static (kgf) | Weight (g) |
|---|---|---|---|---|---|---|---|
| 6300 | 10 | 35 | 11 | 1 | 635 | 365 | 53 |
| 6301 | 12 | 37 | 12 | 1.5 | 760 | 450 | 60 |
| 6302 | 15 | 42 | 13 | 1.5 | 895 | 545 | 82 |
| 6303 | 17 | 47 | 14 | 1.5 | 1070 | 660 | 115 |
| 6304 | 20 | 52 | 15 | 2 | 1250 | 785 | 144 |
| 6305 | 25 | 62 | 17 | 2 | 1610 | 1080 | 232 |
| 6306 | 30 | 72 | 19 | 2 | 2090 | 1440 | 346 |
| 6307 | 35 | 80 | 21 | 2.5 | 2620 | 1840 | 457 |
| 6308 | 40 | 90 | 23 | 2.5 | 3200 | 2300 | 633 |
| 6309 | 45 | 100 | 25 | 2.5 | 4150 | 3100 | 833 |
| 6310 | 50 | 110 | 27 | 3 | 4850 | 3650 | 1070 |
* ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
| Bearing No. | Bore(d) (mm) | Outer(D) (mm) | Width(B) (mm) | Dynamic (kgf) | Static (kgf) |
|---|---|---|---|---|---|
| 6700 | 10 | 15 | 4 | 103 | 57 |
| 6701 | 12 | 18 | 4 | 109 | 67 |
| 6702 | 15 | 21 | 4 | 117 | 81 |
| 6703 | 17 | 23 | 4 | 122 | 88 |
| 6800 | 10 | 19 | 5 | 135 | 75 |
| 6801 | 12 | 21 | 5 | 150 | 91 |
| 6802 | 15 | 24 | 5 | 163 |
107 |
| 6803 | 17 | 26 | 5 | 206 | 135 |
| 6900 | 10 | 22 | 6 | 212 | 117 |
| 6901 | 12 | 24 | 6 | 227 | 133 |
| 6902 | 15 | 28 | 7 | 340 | 205 |
| 6903 | 17 | 30 | 7 | 360 | 228 |
More thin-section bearing models are available on our website.
* ISK bearing precision conforms to internationally recognized standards: ABEC、ISO 492, DIN 620, and JIS B1514.
| Bearing No. | Bore(d) (mm) | Outer(D) (mm) | Width(B) (mm) | Dynamic (KN) | Static (KN) | Weight (g) |
|---|---|---|---|---|---|---|
| 62200 | 10 | 30 | 14 | 5.11 | 2.37 | 44 |
| 62201 | 12 | 32 | 14 | 6.82 | 3.06 | 53 |
| 62202 | 15 | 35 | 14 | 7.64 | 3.72 | 65 |
| 62203 | 17 | 40 | 16 | 9.57 | 4.79 | 96 |
| 62204 | 20 | 47 | 18 | 12.84 | 6.65 | 145 |
| 62205 | 25 | 52 | 18 | 14.02 | 7.88 | 172 |
| 62206 | 30 | 62 | 20 | 19.46 | 11.31 | 275 |
| 62207 | 35 | 72 | 23 | 25.67 | 15.3 | 410 |
| 62208 | 40 | 80 | 23 | 29.52 | 18.14 | 616 |
| 62209 | 45 | 85 | 23 | 31.67 | 20.68 | 625 |
| 62210 | 50 | 90 | 23 | 35.07 | 23.18 | 726 |
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The ball bearing size chart is a comprehensive reference guide that displays various dimensions and specifications of ball bearings.
The primary parameters included in a bearing size chart are ID x OD x W.
To measure a ball bearing, you’ll need to find three key dimensions: the bore diameter, outer diameter, and width. These measurements are typically standardized and can be found in the manufacturer's specifications or on the bearing itself. Using tools like calipers or micrometers, you can take precise measurements and use a size chart to choose the right bearing for your needs.
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To measure ball bearings, use a vernier caliper to provide accurate measurements. If this tool is not available, measurements can be taken using a ruler.
Follow these steps:
Measure the inner diameter by inserting the outside anvils of the caliper into the inner ring of the bearing.Alternatively, measure the inner circle of the bearing from end to end with a ruler.
Measure the outer diameter by placing the bearing in the jaws of the caliper or measuring the bearing from one outside edge to the other using a ruler.
Repeat the last step for the width of the bearing.
Use a bearing sizes chart to find the bearing series number.
Once you have the bore, outer diameter and width, you can look up these dimensions in the ball bearing size chart to identify the correct bearing series and model number.
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Ball bearings are simple but crucial parts used in many types of machines. They help things spin smoothly, reducing friction and wear. A ball bearing consists of two rings and a set of balls in between. To pick the right one for your machine, a ball bearing size chart is super helpful. It ensures that the bearing you choose works well with your equipment and lasts a long time.
In this article, we will explore the significance of the common ball bearing size chart and understand how to interpret and utilize it effectively.
The common standard ball bearing sizes vary widely based on the type and application of the bearing. Ball bearings are available in both metric and imperial sizes.
The size of a ball bearing is defined by its outer geometry, including:
To measure these dimensions accurately, tools like calipers or micrometers are used. Once measured, you can match the dimensions with a size chart to select the right bearing.
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Ball bearings are subjected to radial and axial loads during operation. Load ratings in the size chart indicate the maximum load capacity a bearing can handle before experiencing premature failure.
Axial bearings are made to handle forces that push or pull along their axis. They’re great for supporting axial loads while keeping things running smoothly by reducing friction.
Radial bearings are some of the most common types of rolling bearings, designed to handle loads that act perpendicular to the axis. They provide stable support, reduce friction, and ensure smooth operation under radial loads.
Speed ratings define the maximum rotational speed at which a bearings can operate without causing excessive heat generation or premature wear.
Bearings clearance is the internal gap between the balls and raceways. It influences the bearing's axial and radial play and thermal expansion characteristics.
If a ball bearing is not selected according to the size chart or the specific requirements of the application, several problems can occur:
Using the wrong bearing sizes can lead to misalignment and excessive friction between the bearing and its housing. This extra friction accelerates wear, shortens the bearing's lifespan, and can cause premature failure.
A bearing that’s either too small or too large for the job won’t distribute loads evenly. This imbalance can make the bearing less effective at handling forces and rotations, reducing machinery efficiency and overall performance.
When a bearing isn’t the right size, it may struggle to dissipate heat properly. Friction increases, leading to heat buildup that can degrade lubricants, weaken materials, and eventually cause the bearing to fail.
Using the wrong size bearing can lead to noticeable vibrations and noise during operation. These vibrations not only disrupt smooth performance but can also cause long-term structural damage. Noise is often an early warning sign of misalignment or uneven load distribution, indicating potential issues with the bearing's fit or performance.
Why is my bearing suddenly making noise ? 
Improperly sized bearings are more likely to fail prematurely. Replacing them—and dealing with the cascading problems they cause—can result in expensive downtime, disrupting operations and impacting both productivity and profitability.
In high-stakes applications like automotive or aerospace systems, mismatched bearings can create serious safety hazards. Sudden bearing failure in high-speed or heavy-load scenarios can lead to accidents, risking both equipment integrity and human safety.
To prevent these issues, always refer to the manufacturer's specifications and size charts when choosing bearings for your application. Selecting the right bearing ensures your machinery operates smoothly, lasts longer, and remains safe and reliable.
Understanding the bearing size chart is crucial to making the right selection for your application.
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Figure out what your application needs to handle—think about the load, speed, temperature, and working environment
Choose the right bearing type from the chart based on what your application requires.
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Make sure the bearing's dimensions match your shaft and housing needs. The bore diameter, outer diameter, and width should fit your machinery's specifications.
Ensure that the chosen bearing can handle the expected loads and speeds within your application.
Bearing clearance and tolerance may impact the overall system's performance, so make sure they are suitable for your specific needs.
Advantages of ISK BEARINGS Factory 
Choosing the right bearings is key to ensuring reliability and performance. As a leading bearing supplier from Taiwan, we understand how important this is. Our website offers detailed information to help engineers and professionals make well-informed decisions and fully benefit from these valuable resources.
We are delighted to offer you professional consulting services. We firmly believe that choosing the right bearings is an indispensable step in building reliable and efficient machinery. Therefore, we are committed to becoming your most trustworthy partner. Whether you require standardized bearings, custom solutions, or bearings designed for high loads and speeds.
Extended reading:
1. Needle Bearing Size Chart｜Teach you how to choose bearings correctly
2. Creating a Green Footprint: ISK BEARINGS Corporate Responsibility and ESG Innovation
3. Sleeve Bearing vs Bushing: What Difference Between Them
Ball bearing dimensions are expressed as "bore (d) × outer diameter (D) × width (B)." In metric series, the 6000 series starts around 10 mm bore, the 6200 series covers 10–30 mm, and the 6300 series covers 10–35 mm. Confirm exact values against each series' dimension table.
Measuring a ball bearing focuses on three parameters: bore diameter (inner diameter d), outer diameter (D), and width (B). Use a caliper or micrometer, then compare the readings against a bearing dimension table to verify the model. If readings fall between two models, share a drawing or sample to confirm.
Beyond bore, outer diameter, and width, a ball bearing dimension table typically lists corner radius (r), dynamic and static load ratings, speed rating, internal clearance, and weight. Together these parameters determine whether a bearing runs reliably under a given load, speed, and operating temperature.
A mismatched ball bearing size can cause misalignment, higher friction and wear, uneven load distribution, poor heat dissipation and overheating, vibration and noise, and increased failure and downtime risk. If you are unsure whether a size fits your operating conditions, verify the specification against your actual application, drawing, or sample.
The 6205 and 6305 share a 25 mm bore, but differ in outer diameter and width: the 6205 is 52 × 15 mm, while the 6305 is 62 × 17 mm, with higher dynamic and static load ratings. Selection depends on mounting space and load requirements; the two are not directly interchangeable.
Please provide your question. We’ll find you with the best support options.