Choosing 7800 series angular contact ball bearings ensures your machinery performs reliably, efficiently, and accurately, even under demanding conditions. Perfect for engineers and manufacturers who prioritize precision, durability, and long-term performance.
7800 series angular contact ball bearings are engineered for applications that demand precision, reliability, and smooth operation under combined radial and axial loads. With a design optimized for high-speed performance and long service life, these bearings are widely used in machinery, robotics, and precision instruments.
| 7800 Series Angular Contact Ball Bearings Dimensions | ||||||||||||
| 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 |
| 7800 | 10 | 19 | 5 | 14.5 | 2.381 | 11 | 16.889 | 16.4 | 1.25 | 12.19 | 12.6 | 1.22 |
| 7801 | 12 | 21 | 5 | 16.5 | 2.381 | 12 | 18.89 | 18.4 | 1.25 | 14.119 | 14.6 | 1.22 |
| 7802 | 15 | 24 | 5 | 19.5 | 2.381 | 14 | 21.89 | 21.4 | 1.25 | 17.11 | 17.6 | 1.22 |
| 7803 | 17 | 26 | 5 | 21.5 | 2.381 | 15 | 23.89 | 23.4 | 1.25 | 19.2 | 19.6 | 1.22 |
| 7804 | 20 | 32 | 7 | 26 | 3.175 | 14 | 29.18 | 28.6 | 1.68 | 22.82 | 23.5 | 1.62 |
| 7805 | 25 | 37 | 7 | 31 | 3.175 | 17 | 34.18 | 33.55 | 1.68 | 27.82 | 28.46 | 1.62 |
| 7806 | 30 | 42 | 7 | 36 | 3.175 | 20 | 39.18 | 38.55 | 1.68 | 32.82 | 33.46 | 1.62 |
| 7807 | 35 | 47 | 7 | 41 | 3.175 | 22 | 44.18 | 43.55 | 1.68 | 37.82 | 38.46 | 1.62 |
| 7808 | 40 | 52 | 7 | 46 | 3.175 | 25 | 49.18 | 48.3 | 1.66 | 42.82 | 43.8 | 1.62 |
| 7809 | 45 | 58 | 7 | 51.5 | 3.175 | 28 | 54.69 | 53.8 | 1.66 | 48.32 | 49.3 | 1.62 |
| 7810 | 50 | 65 | 7 | 57.5 | 3.175 | 30 | 60.67 | 59.71 | 1.63 | 54.32 | 55.2 | 1.63 |
| 7811 | 55 | 72 | 9 | 63.5 | 4.762 | 20 | 68.32 | 66.9 | 2.49 | 58.8 | 60.3 | 2.45 |
| 7812 | 60 | 78 | 10 | 69.5 | 4.763 | 22 | 74.28 | 72.9 | 2.45 | 64.73 | 66.2 | 2.45 |
| 7813 | 65 | 85 | 10 | 75 | 4.7625 | 24 | 79.76 | 78.34 | 2.45 | 70.23 | 71.65 | 2.45 |
| 7814 | 70 | 90 | 10 | 80 | 4.762 | 26 | 84.76 | 83.6 | 2.45 | 75.23 | 76.6 | 2.45 |
| 7815 | 75 | 95 | 10 | 85 | 4.7625 | 28 | 89.76 | 88.33 | 2.45 | 80.23 | 81.65 | 2.45 |
| 7816 | 80 | 100 | 10 | 90 | 4.762 | 30 | 94.76 | 93.2 | 2.45 | 85.2 | 86.7 | 2.45 |
| 7817 | 85 | 110 | 13 | 97.5 | 6.35 | 25 | 103.85 | 102 | 3.27 | 91.15 | 93 | 3.27 |
| 7818 | 90 | 115 | 13 | 102.5 | 7.144 | 25 | 109.65 | 107.1 | 3.64 | 95.35 | 97.8 | 3.64 |
| 7819 | 95 | 120 | 13 | 107.5 | 6.35 | |||||||
| 7820 | 100 | 125 | 13 | 112.5 | 6.35 | 28 | 118.85 | 116.6 | 3.27 | 106.15 | 108.3 | 3.27 |
| 7821 | 105 | 130 | 13 | 117.5 | 7.144 | 28 | 124.644 | 122.5 | 3.68 | 110.356 | 112.5 | 3.68 |
| 7822 | 110 | 140 | 16 | 125 | 8.731 | 25 | 133.73 | 130.6 | 4.49 | 116.26 | 119.3 | 4.49 |
| 7823 | 8.731 | |||||||||||
| 7824 | 120 | 150 | 16 | 135 | 8.731 | 27 | 143.75 | 140.7 | 4.49 | 126.3 | 129.3 | 4.49 |
| 7825 | ||||||||||||
| 7826 | 130 | 165 | 20 | |||||||||
| 7827 | ||||||||||||
| 7828 | 140 | 175 | 18 | 157.5 | 9.525 | 28 | 167.025 | 164 | 4.9 | 147.98 | 151.3 | 4.9 |
| 7829 | ||||||||||||
| 7830 | 150 | 190 | 20 | |||||||||
| 7831 | ||||||||||||
| 7832 | 160 | 200 | 20 | 180 | 11.113 | 28 | 168.9 | |||||
| 7833 | ||||||||||||
| 7834 | 170 | 215 | 22 | |||||||||
High Load Capacity
Designed to handle both radial and axial loads simultaneously, the 7800 Series is ideal for applications where thrust and radial forces occur together.
Precision Manufacturing
Each bearing is manufactured to strict tolerances, ensuring minimal vibration, low noise, and stable rotation for sensitive machinery.
Durable Materials
Made from premium bearing steel, with optional stainless steel variants, these bearings resist wear, corrosion, and fatigue, making them suitable for both industrial and semi-harsh environments.
High-Speed Capability
Optimized internal geometry and superior lubrication allow the bearings to operate efficiently at high speeds without compromising performance.
Flexible Configurations
Available in multiple sizes and pair arrangements—back-to-back, face-to-face, or tandem—allowing customization based on load and rigidity requirements.
Machine Tool Spindles: Smooth, precise rotation for high-speed machining.
Robotics: Accurate, vibration-free motion in automated systems.
Pumps & Compressors: Reliable, high-speed operation under continuous load.
Precision Motors: Long-lasting, low-noise performance for electric motors.
Extended bearing and equipment life
Reduced maintenance costs
Superior load handling and stability
Smooth, quiet operation
Versatile installation options
