The 6900 series deep groove ball bearings offer an ideal balance between compact design, high-speed capability, and operational stability. Whether used in precision machinery or lightweight industrial applications, they deliver dependable performance in limited spaces—making them a smart choice for modern mechanical systems.If you are looking for a space-saving bearing solution without compromising reliability, the 6900 series is well worth considering.
The 6900 series deep groove ball bearings are designed for applications where space is limited but performance cannot be compromised. Featuring a slim cross-section and high rotational accuracy, this bearing series is widely used in precision machinery, automation equipment, medical devices, and light-load industrial systems.
Compared with standard deep groove ball bearings, the 6900 series offers a more compact structure, making it ideal for modern equipment that requires lightweight design, high efficiency, and stable operation.
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6900 Series Deep Groove Ball Bearing 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 |
| 6900 | 10 | 22 | 6 | 16 | 3.175 | 9 | 19.18 | 18.5 | 1.66 | 12.82 | 13.5 | 1.62 |
| 6901 | 12 | 24 | 6 | 18 | 3.175 | 10 | 21.186 | 20.6 | 1.66 | 14.825 | 15.5 | 1.62 |
| 6902 | 15 | 28 | 7 | 21.5 | 3.969 | 10 | 25.48 | 24.7 | 2.07 | 17.531 | 18.3 | 2.03 |
| 6903 | 17 | 30 | 7 | 23.5 | 3.969 | 11 | 27.48 | 26.7 | 2.07 | 19.531 | 20.3 | 2.03 |
| 6904 | 20 | 37 | 9 | 28.5 | 4.762 | 10 | 33.275 | 31.8 | 2.49 | 23.78 | 25.2 | 2.44 |
| 6905 | 25 | 42 | 9 | 33.5 | 4.762 | 12 | 38.275 | 36.8 | 2.49 | 28.738 | 30.2 | 2.44 |
| 6906 | 30 | 47 | 9 | 38.5 | 4.7625 | 14 | 43.275 | 41.8 | 2.49 | 33.738 | 35.2 | 2.44 |
| 6907 | 35 | 55 | 10 | 45 | 5.953 | 13 | 50.9 | 48.9 | 3.06 | 39 | 41.1 | 3.06 |
| 6908 | 40 | 62 | 12 | 51 | 6.747 | 13 | 57.76 | 55.7 | 3.53 | 44.253 | 46.3 | 3.46 |
| 6909 | 45 | 68 | 12 | 56.5 | 6.747 | 14 | 63.274 | 61.2 | 3.53 | 49.75 | 51.8 | 3.46 |
| 6910 | 50 | 72 | 12 | 61 | 6.747 | 15 | 67.74 | 65.5 | 3.47 | 54.25 | 56.6 | 3.47 |
| 6911 | 55 | 80 | 13 | 67.5 | 7.144 | 16 | 74.64 | 72.1 | 3.68 | 60.35 | 62.8 | 3.68 |
| 6912 | 60 | 85 | 13 | 72.5 | 7.144 | 16 | 79.644 | 77.15 | 3.68 | 65.356 | 67.85 | 3.68 |
| 6913 | 65 | 90 | 13 | 77.5 | 7.144 | 18 | 84.644 | 82.2 | 3.67 | 70.356 | 72.9 | 3.67 |
| 6914 | 70 | 100 | 16 | 85 | 8.731 | 17 | 93.73 | 90.6 | 4.96 | 76.25 | 79.3 | 4.96 |
| 6915 | 75 | 105 | 16 | 90 | 8.731 | 18 | 98.73 | 95.6 | 4.96 | 81.27 | 84.3 | 4.96 |
| 6916 | 80 | 110 | 16 | 95 | 9.525 | 16 | 104.52 | 101.52 | 4.9 | 85.47 | 88.5 | 4.9 |
| 6917 | 85 | 120 | 18 | 102.5 | 10.3188 | 17 | 112.8 | 109.2 | 5.3 | 92.18 | 95.8 | 5.3 |
| 6918 | 90 | 125 | 18 | 107.5 | 10.3188 | 18 | 117.81 | 114.2 | 5.3 | 97.18 | 100.8 | 5.3 |
| 6919 | 95 | 130 | 18 | 112.5 | 10.319 | 18 | 122.82 | 119.2 | 5.3 | 102.18 | 105.8 | 5.3 |
| 6920 | 100 | 140 | 20 | 120 | 11.1125 | 18 | 131.11 | 127.2 | 5.72 | 108.88 | 112.76 | 5.72 |
| 6921 | 105 | 145 | 20 | |||||||||
| 6922 | 110 | 150 | 20 | 130 | 11.1125 | 19 | 141.11 | 137.3 | 5.72 | 118.88 | 122.7 | 5.72 |
| 6923 | ||||||||||||
| 6924 | 120 | 165 | 22 | 142.5 | 13.494 | 18 | 155.99 | 151.2 | 6.94 | 129 | 133.7 | 6.94 |
| 6925 | ||||||||||||
| 6926 | 130 | 180 | 24 | 155 | 15.081 | 18 | 170.08 | 164.8 | 7.76 | 139.9 | 145.1 | 7.76 |
| 6927 | ||||||||||||
| 6928 | 140 | 190 | 24 | 165 | 15.081 | 19 | 180.081 | 174.8 | 7.76 | 149.919 | 155.2 | 7.76 |
| 6929 | ||||||||||||
| 6930 | 150 | 210 | 28 | 180 | 17.4625 | 18 | 197.46 | 191.3 | 8.99 | 162.5 | 168.6 | 8.99 |
Slim Profile for Space-Saving Design
The most notable characteristic of the 6900 series is its thin-section design. With reduced radial and axial dimensions, these bearings fit easily into compact housings without sacrificing load capacity or service life. This makes them a preferred choice for equipment with strict dimensional constraints.
Deep Groove Raceway Geometry
The precisely machined deep groove raceways ensure smooth ball movement and stable load distribution. This structure allows the bearing to accommodate both radial loads and moderate axial loads in both directions, ensuring consistent performance even at higher speeds.
Optimized Internal Clearance
Carefully controlled internal clearance helps reduce friction and vibration, resulting in quieter operation and improved rotational accuracy, which is critical for precision-driven systems.
Performance Advantages
High-Speed Capability
Thanks to its optimized raceway design and balanced ball guidance, the 6900 series performs reliably under high rotational speeds, making it suitable for electric motors, spindles, and automation components.
Low Friction and Energy Efficiency
The smooth contact between balls and raceways minimizes energy loss during operation. This translates into lower heat generation, reduced wear, and improved overall efficiency, helping extend equipment service intervals.
Stable and Quiet Operation
For applications sensitive to noise and vibration—such as medical equipment or office automation systems—the 6900 series offers stable, low-noise performance even during long-term continuous operation.
Material and Sealing Options
To meet different working environments, 6900 series deep groove ball bearings can be supplied with multiple configurations:
Bearing Steel (GCr15 / 52100) for standard industrial applications
Stainless Steel (optional) for corrosive or hygiene-sensitive environments
Open Type for oil-lubricated systems
Metal Shields (ZZ) to prevent dust ingress while maintaining speed performance
Rubber Seals (2RS) for enhanced protection against moisture and contaminants
These options allow customers to select the most suitable bearing based on operating conditions and maintenance requirements.
Due to their compact size and reliable performance, 6900 series bearings are commonly used in:
Industrial automation equipment
Small and medium electric motors
Precision instruments and measuring devices
Medical and laboratory equipment
Robotics and linear motion systems
Fans, pumps, and office automation products
Their versatility makes them a cost-effective solution for both OEM manufacturers and equipment maintenance.
Strict dimensional and quality control
Stable performance under continuous operation
Flexible customization options for different industries
Consistent supply for bulk and OEM orders
Each bearing is manufactured to meet international quality standards, ensuring reliable performance, long service life, and excellent cost efficiency.
