Precision Ball Bearings
Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry.Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry. MM/MMV (Machine Tool Bearings) Super precision bearings manufactured to MM/MMV tolerances combine the accuracy and performance of ABEC 9/ISO P2 with the non-critical features of ABEC 7/ISO P4 levels for cost effectiveness.
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.
![5.906 Inch | 150 Millimeter x 8.858 Inch | 225 Millimeter x 5.512 Inch | 140 Millimeter TIMKEN 2MM9130WI QUH Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61596-5-906-inch-150-millimeter-x-8-858-inch-225-millimeter-x-5-512-inch-140-millimeter-timken-2mm9130wi-quh-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.472 Inch | 12 Millimeter TIMKEN 3MM9104WI SUL Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61598-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-0-472-inch-12-millimeter-timken-3mm9104wi-sul-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 1.417 Inch | 36 Millimeter TIMKEN 3MM9104WI TUH Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61594-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-1-417-inch-36-millimeter-timken-3mm9104wi-tuh-precision-ball-bearings.jpg)
![5.906 Inch | 150 Millimeter x 8.858 Inch | 225 Millimeter x 5.512 Inch | 140 Millimeter TIMKEN 2MM9130WI QUL Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61597-5-906-inch-150-millimeter-x-8-858-inch-225-millimeter-x-5-512-inch-140-millimeter-timken-2mm9130wi-qul-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.472 Inch | 12 Millimeter TIMKEN 3MM9104WI SUM Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61598-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-0-472-inch-12-millimeter-timken-3mm9104wi-sum-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.945 Inch | 24 Millimeter TIMKEN 3MM9104WI DUL Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61597-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-0-945-inch-24-millimeter-timken-3mm9104wi-dul-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.472 Inch | 12 Millimeter TIMKEN 3MM9104WI SUH Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61598-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-0-472-inch-12-millimeter-timken-3mm9104wi-suh-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 1.89 Inch | 48 Millimeter TIMKEN 3MM9104WI QUH Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61601-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-1-89-inch-48-millimeter-timken-3mm9104wi-quh-precision-ball-bearings.jpg)
![0.787 Inch | 20 Millimeter x 1.654 Inch | 42 Millimeter x 0.945 Inch | 24 Millimeter TIMKEN 3MM9104WI DUM Precision Ball Bearings](https://m.textpatternsolutions.com/uploaded_images/d61597-0-787-inch-20-millimeter-x-1-654-inch-42-millimeter-x-0-945-inch-24-millimeter-timken-3mm9104wi-dum-precision-ball-bearings.jpg)