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Help CenterBearing Capacity Large Needle Bearing Needle Bearing NAV3940 NA4901 HF2520
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Features:
NA, NKI bearings are RNA and NK needle bearings without inner ring. Such a bearing has no inner ring and is suitable for a support structure in which the radial mounting size is limited, and the journal that matches the bearing directly serves as a rolling surface. As the axis of the raceway surface, the hardware must be hardened and ground, and the entire needle roller bearing can only have a high life and running accuracy when it is machined to the appropriate size and shape accuracy. At the same time, since there is no inner ring, the diameter of the shaft can be appropriately increased, thereby increasing rigidity.
1. The friction coefficient of the rolling bearing is smaller than that of the sliding bearing, and the transmission efficiency is high. Generally, the friction coefficient of a sliding bearing is 0.08-0.12, and the friction coefficient of a rolling bearing is only 0.001-0.005;
2. Rolling bearings have been standardized, serialized and generalized, suitable for mass production and supply, and easy to use and maintain;
3. The rolling bearing is made of bearing steel and is heat treated. Therefore, the rolling bearing not only has high mechanical properties and long service life, but also can save the expensive non-ferrous metal used for manufacturing the sliding bearing;
4. The internal clearance of the rolling bearing is small, and the machining accuracy of each part is high, so the running accuracy is high. At the same time, the rigidity of the bearing can be increased by a preloading method. This is very important for precision machinery;
5. Some rolling bearings can withstand both radial and axial loads, thus simplifying the structure of the bearing support;
6. Because the rolling bearing has high transmission efficiency and less heat generation, it can reduce the consumption of lubricating oil, and the lubrication maintenance is more trouble-free;
7. Rolling bearings can be easily applied to shafts in any orientation in space.
Welcome to choose Linqing huawei bearing CO., LTD.
Hard to find Bearings, we can help!
1. We are China Leading Bearing Manufacturer.
2. Assessed Gold Supplier.
3. Inspected by the Inspection Institution of Bureau Veritas Certification.
4. 100% QC inspection Before Shipment.
5. Best Quality & Best Service with Competitive price.
6. No Non-standard Bearings- Any requirement for non-standard bearings easily fulfilled due to its vast knowledge & links in the industry.
7. Quick Delivery- Provides just-in-time delivery with its streamlined supply chain.
8. Cost Saving- Provides long-life, shock-resistant & high reliability bearings with better performance.
9. Index of Thrust Ball Bearing.
Advantages and Feathers of Bearings:
1. HUAWEI bearing Co., Ltd. has its own factory. We make sure to offer you the most competitive price.
2. HUAWEI bearing Co., Ltd. has a professional R&D team and an after-sale team, so what you buy is top-end, and what you use is quality & service guaranteed.
3. HUAWEI bearing Co., Ltd. is a bearing manufacturer since 2002. Rich experience makes us more professional.
4. The bearing is long durability, high speed and low noise.
5. OEM & ODM are available.
6. All kinds of bearing samples are available.
Main uses: cultivators, automobiles, machine tools, etc.
Send Inquiry to This Supplier
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