Ball bearing size chart
Ball bearings are simple but critical components used in many types of machines. They help objects rotate smoothly with less friction and wear. Ball bearings consist of two rings with a set of balls in the middle. To select the right bearing for your machine, a ball bearing size chart is very useful. It ensures that the bearing you choose will work well with your equipment and last a long time.
The ball bearing size chart is a comprehensive reference guide that shows the various sizes and specifications of ball bearings.
(1) Bearing Dimensions
The dimensions of a ball bearing are defined by its external geometry and include:
Inner diameter (d)
Outer diameter (D)
Width or height (B or T)
Ring radius (r)
Use a tool such as a caliper or micrometer to accurately measure these dimensions. Once measured, you can match the dimensions to the size chart to select the right bearing.
(2) Load Ratings
Ball bearings are subject to radial and axial loads during operation. The load ratings in the size chart indicate the maximum load capacity that the bearing can withstand before premature failure.
A. Axial Bearing Principles
Axial bearings are subject to forces that push and pull along their axis. They are ideal for supporting axial loads while keeping objects running smoothly by reducing friction.
B. Radial Bearing Principles
Radial bearings are one of the most common rolling bearings and are designed to carry loads perpendicular to the shaft. They provide stable support, reduce friction, and ensure smooth operation under radial loads.
(3) Speed rating
The speed rating defines the maximum speed at which the bearing can operate without causing overheating or premature wear.
(4) Clearance
Bearing clearance is the internal clearance between the balls and raceways. It affects the axial and radial play and thermal expansion characteristics of the bearing.
What are the standard ball bearing sizes?
Common standard ball bearing sizes vary depending on the bearing type and application. Ball bearings are available in both metric and imperial sizes.
Common metric sizes for ball bearings include:
6000 series: 10 mm bore diameter
6200 series: 10 to 30 mm bore diameter
6300 series: 10 to 35 mm bore diameter
6800 series: 10 to 80 mm bore diameter
6900 series: 10 to 100 mm bore diameter
See the ball bearing products
For imperial sizes,common bearing size series include:
R series: 0.1875 to 0.5 inch bore diameter
1600 series: 0.1875 to 0.5 inch bore diameter
16000 series: 10.319 to 12.7 mm bore diameter
63000 series: 10.319 to 12.7 mm bore diameter
These additional sizes cover a broader range of applications and provide more options for engineers and designers when selecting ball bearings for various machinery and equipment.
It’s important to match the bearing size accurately to the specific requirements of the application to ensure optimal performance and reliability.
About us
DFL Group is based on Hebei DFL Minmet Refractories Corp. Includes Hebei DFL Minmet Refractories Corp., Hong Kong CODO company, NSAR IND LLC in U.S.A., NSAR bearing manufacturing factory and a number of NSAR brand designated manufacturers. Our brands include NSAR, 3D, OWO, CBQ, and NASA .
NSAR bearings management team of managers, engineers, and technical staff have 15 – 25 years experience. We supply customers with bearings not only produced in our own factory, but also produced in professional bearings plants designated by NSAR brand to meet customers’ different requirements, such as pillow block bearings,we have designated a factory in northern China, which has perfect testing equipment and can develop products to customer needs very rapidly. Miniature bearings are arranged in the factory in southern China, which has enjoyed a good reputation long term in producing miniature bearings.
As a professional factory that produces professional products, with professional people doing professional things, our foreign customers have declared: “NSAR bearings have reached a domestic first-class and international brand-name quality, and NSAR bearing prices are 30-50% lower than international similar bearings.”
NSAR, a professional 6000 bearing supplier in China, provides a broad variety of 6000 bearing with best customer service and quality assured. With more than 20 years 6000 bearing manufacture experience, our 6000 bearings has been exported to United States, Canada, Mexico, Brazil, Argentina. NSAR can satisfy your bulk 6000 deep groove ball bearings customization needs,We provide 6012 bearing and 6200 bearings series and 6300 bearing.you can products download.