high speed deep groove ball bearing miniature ball bearing single row tapered roller bearing 685 686 687 688 689 6800 6800W7 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810
Ningbo Kent bearing Co.,Ltd is located in Yuyao, Ningbo, Zhejiang, China. Our company is a factory specialized in designing and manufacturing a variety of high-precision, top quality ball bearings for electric motors, automobiles, household appliances, power tools, pumps, motorcycles, heavy vehicles, machines etc.
Our bearing advantages:
Strict dimensional tolerance, smooth rotation, high load capacity and high temperature resistance.
Custom specifications & OEM service available, stable supply and competitive price.
With years of experience in bearing manufacturing, we adhere to strict quality control standards (ISO 9001) to ensure each thin wall ball bearing meets the highest industry requirements. Our professional R&D team is dedicated to optimizing product performance, while our efficient supply chain ensures timely delivery and competitive pricing.
We offer a comprehensive range of standard thin wall ball bearings, with inner diameter (ID) from 5mm to 50mm, outer diameter (OD) from 11mm to 65mm, and width (W) from 4mm to 18mm. Customization options are available to meet your unique requirements, including:
Custom dimensions (ID/OD/width) to fit specific equipment
Special materials (stainless steel, ceramic balls) for corrosion resistance or high-temperature applications
Custom lubrication (food-grade grease, high-temperature grease)
Special sealing solutions for harsh environments
Company certificate
Bearing parameter
Bearing specification 68 Series
| Basic Load Rating KN | Maximum Run Out Speed | ||||||||
| Bearing NO. | ID(mm)(inch) | OD(mm)(inch) | Width(mm)(inch) | Radius(mm)(inch) | Dynamic(C) | Static(C0) | Grease r/min | Oil r/min | Weight Kg/pc |
| 685 | 5 .1969 | 11 .4331 | 3 .1181 | 0.1 .006 | 0.715 | 0.282 | 35000 | 45000 | 0.0011 |
| 686 | 6 .2362 | 13 .5118 | 3.5 .1378 | 0.15 .006 | 1.08 | 0.44 | 33000 | 42000 | 0.0019 |
| 687 | 7 .2756 | 14 .5512 | 3.5 .1378 | 0.15 .006 | 1.17 | 0.51 | 31000 | 40000 | 0.0021 |
| 688 | 8 .3150 | 16 .6299 | 4 .1575 | 0.2 .008 | 1.26 | 0.585 | 29000 | 38000 | 0.0031 |
| 689 | 9 .3543 | 17 .6693 | 4 .1575 | 0.2 .008 | 1.72 | 0.82 | 28000 | 36000 | 0.0032 |
| 6800 | 10 .3937 | 19 .7480 | 5 .1969 | 0.3 .012 | 1.83 | 0.925 | 26000 | 34000 | 0.005 |
| 6800W7 | 10 .3937 | 19 .7480 | 7 .2756 | 0.3 .012 | 1.83 | 0.925 | 26000 | 34000 | 0.006 |
| 6801 | 12 .4724 | 21 .8268 | 5 .1969 | 0.3 .012 | 1.92 | 1.04 | 22000 | 30000 | 0.006 |
| 6802 | 15 .5906 | 24 .9449 | 5 .1969 | 0.3 .012 | 2.08 | 1.26 | 20000 | 28000 | 0.007 |
| 6803 | 17 .6693 | 26 1.0236 | 5 .1969 | 0.3 .012 | 2.81 | 1.72 | 19000 | 26000 | 0.008 |
| 6804 | 20 .7874 | 32 1.2598 | 7 .2756 | 0.3 .012 | 4 | 2.47 | 17000 | 22000 | 0.019 |
| 6805 | 25 .9843 | 37 1.4567 | 7 .2756 | 0.3 .012 | 4.3 | 2.95 | 15000 | 19000 | 0.022 |
| 6806 | 30 1.1811 | 42 1.6535 | 7 .2756 | 0.3 .012 | 4.7 | 3.65 | 13000 | 17000 | 0.026 |
| 6807 | 35 1.3780 | 47 1.8504 | 7 .2756 | 0.3 .012 | 4.9 | 4.05 | 11000 | 15000 | 0.029 |
| 6808 | 40 1.5748 | 52 2.0472 | 7 .2756 | 0.3 .012 | 5.1 | 4.4 | 9000 | 13000 | 0.033 |
| 6809 | 45 1.7717 | 58 2.2835 | 7 .2756 | 0.3 .012 | 6.4 | 5.65 | 7000 | 11000 | 0.04 |
| 6810 | 50 1.9685 | 65 2.5591 | 7 .2756 | 0.3 .012 | 6.6 | 6.1 | 5000 | 9000 | 0.052 |
Packing information
Industrial packing(bulk in carton)
Small white box, small color box, carton
Wide Range of Applications
Our ball bearings are widely used across various industries, thanks to their reliable performance and versatile design. Key application areas include:
Precision Instruments:
Medical equipment (MRI machines, surgical tools), optical devices, measuring instruments, and laboratory equipment.
Automotive Industry:
Electric vehicle components, automotive electronics, steering systems, transmission parts, and wheel hubs.
Industrial Machinery:
Robotics, CNC machines, textile machinery, printing equipment, industrial gearboxes, and conveyor systems.
Consumer Electronics:
High-end cameras, precision motors, home appliances, and portable electronic devices.
FAQ
Do you support OEM and customization?
A: OEM, ODM, custom logo, custom packaging and special size processing are acceptable.
Do you have stock?
A: Most standard size bearings are in stock, fast delivery within 3-7 working days.
What about the MOQ?
A: Small order & sample order are welcome, mixed wholesale is supported.
Can it work in high temperature?
A: High temperature resistant grease and high-temperature bearings are available, suitable for harsh working conditions.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.