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 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.
![3.346 Inch | 85 Millimeter x 4.724 Inch | 120 Millimeter x 1.417 Inch | 36 Millimeter TIMKEN 3MMC9317WI DUL Precision Ball Bearings](https://m.tmmy870.net/uploaded_images/d61593-3-346-inch-85-millimeter-x-4-724-inch-120-millimeter-x-1-417-inch-36-millimeter-timken-3mmc9317wi-dul-precision-ball-bearings.jpg)
![2.165 Inch | 55 Millimeter x 3.15 Inch | 80 Millimeter x 1.024 Inch | 26 Millimeter TIMKEN 2MMV9311HXVVDULFS637 Precision Ball Bearings](https://m.tmmy870.net/uploaded_images/d61594-2-165-inch-55-millimeter-x-3-15-inch-80-millimeter-x-1-024-inch-26-millimeter-timken-2mmv9311hxvvdulfs637-precision-ball-bearings.jpg)
- 2.165 Inch | 55 Millimeter x 3.15 Inch | 80 Millimeter x 1.024 Inch | 26 Millimeter TIMKEN 2MMV9311HXVVDULFS637 Precision Ball Bearings
- 2.165 Inch | 55 Millimeter x 3.15 Inch | 80 Millimeter x 1.024 Inch | 26 Millimeter
- 72 mm
![5.906 Inch | 150 Millimeter x 8.858 Inch | 225 Millimeter x 1.378 Inch | 35 Millimeter TIMKEN 2MMC9130WI SUH Precision Ball Bearings](https://m.tmmy870.net/uploaded_images/d61601-5-906-inch-150-millimeter-x-8-858-inch-225-millimeter-x-1-378-inch-35-millimeter-timken-2mmc9130wi-suh-precision-ball-bearings.jpg)
![5.906 Inch | 150 Millimeter x 8.858 Inch | 225 Millimeter x 2.756 Inch | 70 Millimeter TIMKEN 2MMC9130WI DUM Precision Ball Bearings](https://m.tmmy870.net/uploaded_images/d61592-5-906-inch-150-millimeter-x-8-858-inch-225-millimeter-x-2-756-inch-70-millimeter-timken-2mmc9130wi-dum-precision-ball-bearings.jpg)