Precision Ball Bearings
National Precision Bearing specializes in precision inch and metric ball bearings for miniature, aircraft and industrial applications. Aviation instrument bearings and dental bearings are extensively stocked. ABEC 3, 5, and 7 grade miniature bearings are available to support your needs.
Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry.Precision balls are used in critical aeronautical bearings, guidance system balls for space and military applications, precision valves, automotive bearings and other applications where higher precision is necessary. Precision balls are defined by grade: The lower the number of the grade, the more precision to which the ball is manufactured.
![3.937 Inch | 100 Millimeter x 5.512 Inch | 140 Millimeter x 0.787 Inch | 20 Millimeter TIMKEN 3MMV9320HX SUM Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61601-3-937-inch-100-millimeter-x-5-512-inch-140-millimeter-x-0-787-inch-20-millimeter-timken-3mmv9320hx-sum-precision-ball-bearings.jpg)
![3.937 Inch | 100 Millimeter x 5.512 Inch | 140 Millimeter x 0.787 Inch | 20 Millimeter TIMKEN 3MMV9320HX SUL Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61600-3-937-inch-100-millimeter-x-5-512-inch-140-millimeter-x-0-787-inch-20-millimeter-timken-3mmv9320hx-sul-precision-ball-bearings.jpg)
![3.937 Inch | 100 Millimeter x 5.512 Inch | 140 Millimeter x 1.575 Inch | 40 Millimeter TIMKEN 3MMV9320HX DUM Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61594-3-937-inch-100-millimeter-x-5-512-inch-140-millimeter-x-1-575-inch-40-millimeter-timken-3mmv9320hx-dum-precision-ball-bearings.jpg)
![3.346 Inch | 85 Millimeter x 5.118 Inch | 130 Millimeter x 1.732 Inch | 44 Millimeter TIMKEN 2MM9117WIDULFS637 Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61599-3-346-inch-85-millimeter-x-5-118-inch-130-millimeter-x-1-732-inch-44-millimeter-timken-2mm9117widulfs637-precision-ball-bearings.jpg)
![2.756 Inch | 70 Millimeter x 3.937 Inch | 100 Millimeter x 0.63 Inch | 16 Millimeter SKF 71914 CDGB/P4A Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61594-2-756-inch-70-millimeter-x-3-937-inch-100-millimeter-x-0-63-inch-16-millimeter-skf-71914-cdgb-p4a-precision-ball-bearings.jpg)
![3.346 Inch | 85 Millimeter x 5.118 Inch | 130 Millimeter x 2.598 Inch | 66 Millimeter TIMKEN 2MM9117WI TUL Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61592-3-346-inch-85-millimeter-x-5-118-inch-130-millimeter-x-2-598-inch-66-millimeter-timken-2mm9117wi-tul-precision-ball-bearings.jpg)
![3.346 Inch | 85 Millimeter x 5.118 Inch | 130 Millimeter x 2.598 Inch | 66 Millimeter TIMKEN 2MM9117WI TUH Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61595-3-346-inch-85-millimeter-x-5-118-inch-130-millimeter-x-2-598-inch-66-millimeter-timken-2mm9117wi-tuh-precision-ball-bearings.jpg)
![3.346 Inch | 85 Millimeter x 5.118 Inch | 130 Millimeter x 0.866 Inch | 22 Millimeter TIMKEN 2MM9117WI SUM Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61598-3-346-inch-85-millimeter-x-5-118-inch-130-millimeter-x-0-866-inch-22-millimeter-timken-2mm9117wi-sum-precision-ball-bearings.jpg)
![0.591 Inch | 15 Millimeter x 1.102 Inch | 28 Millimeter x 0.551 Inch | 14 Millimeter TIMKEN 3MM9302WI DUH Precision Ball Bearings](https://m.multimediosmaldoni.net/uploaded_images/d61601-0-591-inch-15-millimeter-x-1-102-inch-28-millimeter-x-0-551-inch-14-millimeter-timken-3mm9302wi-duh-precision-ball-bearings.jpg)