The 7900 series angular contact ball bearings are engineered for high-speed, high-precision applications where reliability and performance are critical. Widely used in industries ranging from electric motors and machine tools to robotics and automotive systems, these bearings deliver exceptional rotational accuracy, long service life, and consistent operation even under demanding conditions.
Investing in 7900 Series bearings means choosing precision, reliability, and performance. Their ability to operate efficiently under high-speed and high-load conditions makes them a trusted solution for engineers and designers aiming for maximum machine efficiency and minimal downtime.
Whether you are upgrading existing machinery or designing new systems, 7900 Series Angular Contact Ball Bearings provide the quality and reliability your equipment demands.
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7900 Series Angular Contact Ball Bearings Dimensions |
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| Model | Inner Diameter | Outer Diameter | Width | Central Economic | sphere diameter | Number of balls | outer trench | outer inner diameter | Groove curvature | Inner trench | Inner and Outer Diameter | Groove Curvature |
| 7900 | 10 | 22 | 6 | 16 | 3.175 | 9 | 19.18 | 18.5 | 1.66 | 12.82 | 13.5 | 1.62 |
| 7901 | 12 | 24 | 6 | 18 | 3.175 | 10 | 21.186 | 20.6 | 1.66 | 14.825 | 15.5 | 1.62 |
| 7902 | 15 | 28 | 7 | 21.5 | 3.969 | 10 | 25.48 | 24.7 | 2.07 | 17.531 | 18.3 | 2.03 |
| 7903 | 17 | 30 | 7 | 23.5 | 3.969 | 11 | 27.48 | 26.7 | 2.07 | 19.531 | 20.3 | 2.03 |
| 7904 | 20 | 37 | 9 | 28.5 | 4.762 | 10 | 33.275 | 31.8 | 2.49 | 23.78 | 25.2 | 2.44 |
| 7905 | 25 | 42 | 9 | 33.5 | 4.762 | 12 | 38.275 | 36.8 | 2.49 | 28.738 | 30.2 | 2.44 |
| 7906 | 30 | 47 | 9 | 38.5 | 4.7625 | 14 | 43.275 | 41.8 | 2.49 | 33.738 | 35.2 | 2.44 |
| 7907 | 35 | 55 | 10 | 45 | 5.953 | 13 | 50.9 | 48.9 | 3.06 | 39 | 41.1 | 3.06 |
| 7908 | 40 | 62 | 12 | 51 | 6.747 | 13 | 57.76 | 55.7 | 3.53 | 44.253 | 46.3 | 3.46 |
| 7909 | 45 | 68 | 12 | 56.5 | 6.747 | 14 | 63.274 | 61.2 | 3.53 | 49.75 | 51.8 | 3.46 |
| 7910 | 50 | 72 | 12 | 61 | 6.747 | 15 | 67.74 | 65.5 | 3.47 | 54.25 | 56.6 | 3.47 |
| 7911 | 55 | 80 | 13 | 67.5 | 7.144 | 16 | 74.64 | 72.1 | 3.68 | 60.35 | 62.8 | 3.68 |
| 7912 | 60 | 85 | 13 | 72.5 | 7.144 | 16 | 79.644 | 77.15 | 3.68 | 65.356 | 67.85 | 3.68 |
| 7913 | 65 | 90 | 13 | 77.5 | 7.144 | 18 | 84.644 | 82.2 | 3.67 | 70.356 | 72.9 | 3.67 |
| 7914 | 70 | 100 | 16 | 85 | 8.731 | 17 | 93.73 | 90.6 | 4.96 | 76.25 | 79.3 | 4.96 |
| 7915 | 75 | 105 | 16 | 90 | 8.731 | 18 | 98.73 | 95.6 | 4.96 | 81.27 | 84.3 | 4.96 |
| 7916 | 80 | 110 | 16 | 95 | 9.525 | 16 | 104.52 | 101.52 | 4.9 | 85.47 | 88.5 | 4.9 |
| 7917 | 85 | 120 | 18 | 102.5 | 10.3188 | 17 | 112.8 | 109.2 | 5.3 | 92.18 | 95.8 | 5.3 |
| 7918 | 90 | 125 | 18 | 107.5 | 10.3188 | 18 | 117.81 | 114.2 | 5.3 | 97.18 | 100.8 | 5.3 |
| 7919 | 95 | 130 | 18 | 112.5 | 10.319 | 18 | 122.82 | 119.2 | 5.3 | 102.18 | 105.8 | 5.3 |
| 7920 | 100 | 140 | 20 | 120 | 11.1125 | 18 | 131.11 | 127.2 | 5.72 | 108.88 | 112.76 | 5.72 |
| 7921 | 105 | 145 | 20 | |||||||||
| 7922 | 110 | 150 | 20 | 130 | 11.1125 | 19 | 141.11 | 137.3 | 5.72 | 118.88 | 122.7 | 5.72 |
| 7923 | ||||||||||||
| 7924 | 120 | 165 | 22 | 142.5 | 13.494 | 18 | 155.99 | 151.2 | 6.94 | 129 | 133.7 | 6.94 |
| 7925 | ||||||||||||
| 7926 | 130 | 180 | 24 | 155 | 15.081 | 18 | 170.08 | 164.8 | 7.76 | 139.9 | 145.1 | 7.76 |
| 7927 | ||||||||||||
| 7928 | 140 | 190 | 24 | 165 | 15.081 | 19 | 180.081 | 174.8 | 7.76 | 149.919 | 155.2 | 7.76 |
| 7929 | ||||||||||||
| 7930 | 150 | 210 | 28 | 180 | 17.4625 | 18 | 197.46 | 191.3 | 8.99 | 162.5 | 168.6 |
8.99 |
1. High-Speed Performance
Designed to handle high rotational speeds with minimal friction, 7900 Series bearings are ideal for applications where efficiency and precision are paramount. Their optimized geometry reduces heat generation, ensuring smooth operation at both low and high speeds.
2. Superior Load Capacity
With an ability to accommodate both radial and axial loads, these bearings provide excellent support under combined loading conditions. The angular contact design allows for higher axial load capacity in one direction, making them perfect for applications requiring rigidity and stability.
3. Precision and Accuracy
Manufactured with strict tolerances, 7900 Series bearings ensure minimal runout and exceptional rotational precision. This makes them suitable for high-precision machinery such as CNC equipment, spindles, and precision pumps.
4. Enhanced Durability and Longevity
Made from high-quality bearing steel and featuring advanced heat treatment processes, these bearings offer excellent wear resistance and fatigue life. Their robust design allows them to operate reliably in challenging environments, reducing maintenance needs and downtime.
5. Versatile Design Options
The 7900 Series is available in various configurations, including single-row, double-row, and paired arrangements, allowing engineers to select the optimal setup for axial load direction, stiffness requirements, and application-specific needs.
High-speed spindles in CNC machines
Electric motors and generators
Robotics and automation systems
Aerospace and automotive components
Precision pumps and compressors
